Futaba 3PK Radio

[Infernoracer]

What do you guys think of them?

[nmt6789]

There nice..............

[Rick Worth]

I have always used & still use Futaba radios but this radio is ugly. Hope it works better then it looks. R.W.

[PCC]

Originally posted by Rick Worth
I have always used & still use Futaba radios but this radio is ugly. Hope it works better then it looks. R.W.

Yes, it does. Then again, I don't look at my radio as I drive my cars.

[Infernoracer]

I thought it was ugly at first too but now it's growing on me!

[InspGadgt]

I thought so to until yesterday when I got my hands on one. It's a very nice radio with a menu system that is a huge improvement over the 3PJ.

[KingWillie]

$ 250 US at RCMODEL.HK (http://shopping.rcmodel.com.hk/eshopping/default.htm)

[NMT_RACER_BOY]

PCC
can you see if the grip on the 3PJS is same as the one on 3PK?
I want to get a green wheel and grip for the 3pk. I heard that there is 2 sizes, small or large, which one would work with 3PK, do you know?

thanks

[3xs]

I recently looked into the custom grip thing myself and found out that the company that made the colored grips are no longer in business and yes they did come in two sizes.

[NMT_RACER_BOY]

ya, but i can still get them... that's why i am wondering

[TSR6]

It looks like an awesomeradio. I had a change to hold one at the Chicago hobby show, and it was definately comfortable..

I just couldn't wait for it to be released, which is the main reason i went with the M8. Also Crystall-less, with the M8/Switch

Merry Christmas

-Troy

[Helldiver]

Some notes on the 3PK:

Since I've been a Futaba junkie since my airplane days, I have to vouch for the system.

Upsides:
-Three levels of user customization. Though if you are an advanced user and are used to the M8, you may want to just keep it at level 3.
-HRS capable. Currently the only radio that is able to transmit to the HRS receivers. Allowing you the fastest responce time available on the market. The Futaba HRS Receiver requires digital servos. 1/12th Modifieds and 1/10 Modifieds that tried my system out pretty much where instantly impressed with the 3PK, one of them put one on order the following evening!

*Later this year JR will be releasing a radio that is capable of the same, MSRP is about $369-$379 about $100 more than the 3PK.

*There is also news of an Airtronics M8 III

-Advanced functions that are not available on any radio to date.
-Stearing Speeds and Stearing vs. Throttle speed mixing, Dual-Dual Rates (primary and secondary), Enhanced servo response programming (allowing you to customize servo throws, trims, response rates, moreso than current radios.
-Telemetry graphics for steering speeds, throttle response, acceleration, brake, servo response, and more. The 3PK displays on-screen the SIN or COS curbs of the exponential or speed rates that you set.
-On-screen realtime servo reaction display. Nifty feature allowing you to see the direct affect your imput is having on a particular channel (even accounts for sub-trims, trims, dual rates, etc).
-Temporary transmiter re-adjusting. Allows you to adjust the transmitter temporarily until it can be sent for repair or anual adjustment. This is done through an onboard re-adjustment menu.
-Fully programable functions, buttons, and re-assignments. With a nifty direct call feature allowing you to get to a menu, task, display, by the tap of one of the 6 user pogramable instant call buttons.
-Backlit display (light green) with a bright user customizable led (green, grey, white, light blue, purple, off, etc).
-Memory for 10 models. LCD displays tx user/owner name, model name, Servo response, timer, modulation mode.
-Three modes of Modulation: PCM, FM, and HRS
-and even more...

...and all of the "other" stuff the 3PJ and other radios of its caliber have.

Comes with your choice of receiver, R113ip (PCM) and the HRS receiver (HRS) that can only be used with digital servos.

Includes charger for the transmitter's Sanyo flat battery pack.

Downsides:
-The tx's crystal CANNOT be replaced by simply buying another crystal. You must replace the entire transmitter module for the frequency desired. As of today, Tower Hobbies sells 3PK modules for $51.99. This is a disadvantage to racers who travel to different circuits and find that others may have the same frequency. Other radios give you the luxury of simply purchasing an $11.00 crystal and doing a freq. change right on the spot. Fortunately this can be done on the Rx (both the HRS and the R113iP receivers use standard Futaba 75Mhz or 27Mhz FM crystals).

-As with all PCM radios, transmitting with the antenna collapsed can damage the Module. Fortunately the 3PK offers two solutions for freq. interferance management: a Direct System Connection, and a Display Switch. The optional DSC cable allows you to connect the receiver directly to the tx. You can program, test, etc without transmitting. The DSC cable is sold seperately. The Display Switch on the side of the display screen allows you to program, make assignments etc without transmitting (this can be used in conjunction with the Servo Display)

The 3PK can be found for $299-250. In my opinion the HRS capability, the radio's numerous redundant systems, additional features far outweigh the disadvantage of the need for additional modules for Freq. changes on the tx.

[3xs]

You can damage the module if the antenna is down? I've never heard or knew of this.I've just purchased a 3pjs and am running with pcm RX's as was also with my 1024. Is this stated in the manual?

[Helldiver]

same with the guys at my track "huh? what about PCM modules frying when the antenna is collapsed and you transmit?". Eventually what happens is that your radio gets out of wack and begins interfering with other radios, atleast thats been the worst effect I have seen. But as it applies to the 3PK:

A quick intro to the 3PK system Page 7:
Do not operate transmitter with module in and power switch on, while antenna is collapsed. Always extend antenna
if transmitting.

Getting to know the transmitter, Display Switch, Page 8:
Transmitting with the antenna collapsed may damage the module.

[NMT_RACER_BOY]

hey helldiver,
PCC said on the 3PK module, you can change the crystals by taking off a sticker or a plastic piece off.

Have you owned a 3PJS before?
Do you know if Grips and Wheel that was made for 3PJS will fit the 3PK?

3PK is suppose to be for christmas but tower shipping is slow...


please tell me if the grips and wheels can fit. I know the wheel will but i don't know about the grip. My mom is going to korea on the January 7th so i need to know quick...
thanx guys!

[PCC]

The steering wheels have the same mounting boss so the wheels are interchangeable. The grips, though, are not. I'm not even sure if the 3PK grips are removeable easily.

Helldiver, if you look at the back of the transmitter (assuming your radio is set up for right-handed use) then you will see an opening on the upper left hand corner and the letters "XTAL" below it. On the module, you will see what appears to be a sticker where that window lines up. If you remove the sticker you will find a standard Futaba FM TX crystal hiding underneath.

[Rookie Solara]

Futaba = No problem.......The manuel is easy to read, the whole system is easy to use, and the HUGH screen is AWESOME to read...can use with my KO receiver, and my old FM Futaba receiver....can use with my 4 old Futaba Analogue servo.......what else can I say.

Check ebay, they are like $280....or order from HK, $250 plus $30 EMS shipping....still good $40-50 cheaper then LHS or Towers.

The optional DROP DOWN steering wheel is included with the radio, unlike KO EX-1 Mars-R.

http://www.enteract.com/~arsa/ntc3/3pk-01.jpg

[Helldiver]

About the tx Crystal change, yeah, just some confusion regarding "bands". You can change the crystal, but if you want to change bands (from say 75 to 27), you'll need a new module.

The wheel is easy to change by simply removing the plastic hub cover (it snaps back on), and unscrewing it. I never had the grip and optional wheel kits for the 3PJ, but the optional 3rd Party wheels fit.

The grip, there is two rubber parts to the grip. The inside large rubber handle grip I haven't removed, but it seems like it isn't that hard to do. Then there is a finger grip running under the throttle trigger, this rubber grip is blue. This one you cannot remove without damaging it, or re-gluing it on.

One complaint regarding the standard wheel; like the Hitec and other series of radios, the foam donut grip around the wheel slides into the radio. I got some tire CA and permanently glued the foam donut grip ring unto the steering wheel.

Interesting note: Rookie Solara's image of the 3PK has the label "MEGATECH" on the side of it. Mine says "MAGNUM" along the side of it. Strange...

[qurve]

Magnum is the name of the U.S. version.
Megatech is the name of the Japan version.

I got mine from Japan so it says Megatech.

[NMT_RACER_BOY]

o...
Since i look at the pics more carefully, i think 3PK is the best with it's normal 3 spoke wheels... stupid me fore thinking of getting a green 5 spoke.. :P

[ugman]

Hey guys, I have a quesion. I have a 7.2v batt pack and I noticed that the manual says I need to use 6v only for the reciever. Will I damage the reciever if I use my 7.2v batt pack?

[Infernoracer]

I have seen a bunch of guys running 7.2 volt stick packs in their 1/8 scale buggies so it should be ok.

Just a note on the 3PK Megatech Japan radios's, They do not carry a US warranty at all so if for any reason you have a problem with the radio you will need to send it away to get it fixed. I was going to get a 3PK from ebay but they are all the Megatech versions so I am going to wait and pay a little more from my LHS!

[OldskoolGT]

I have a question for you guys with the 3PKs who are using the HRS receivers:

Is there a failsafe with the HRS mode or is the failsafe only with the PCM receiver?

[NMT_RACER_BOY]

i don't have mine yet in my hands but hrs has failsafe also

[ugman]

I dont have the 3PK yet either but I was wondering where the crystal is in the radio. I looked in the manual that I downloaded and it doesnt say where it is...

[blurredvision]

The crystal is in the side of a module. The module is under a cover on the top/front of the transmitter.

Here is a pic...

[PCC]

Futaba put a sticker over that crystal so it won't be as apparent as that picture is. Just remove the sticker and there it is.

[NMT_RACER_BOY]

removing the sticker removes warrenty?

[Rookie Solara]

Sticker...? There are no sticker on my 3PK crytsal area (Mine is the Megatech Japan version)......not sure about the USA version. And I dont thing that will be a waranty issue, every racer should have at least 2 or more CRYSTAL sets just in case......and you must be able to change your crystal on your Tx.......don't worry about that sticker.

Waranty issue.......Nah, I don't think we need to worry about that....my old Futaba (13 years old) still running like new, and I don't see the 3PK will be anything worst then my old Futaba.

Crystal is different then band, you cannot use 75 crystal on 40 band.....no radio can do that, but at least you have the option to change to 75 (in USA) or 40 (asia, Europe)band........all you have to do is get some crystal for the band you use.

Failsafe is on ALL 3 modes......PPM, PCM and HRS mode. Whatever version of reciever that you are using, you can use the Fail safe mode option, as well as the ABS....etc.

HRS receiver can only use FUTABA digital servos, not sure it is for ALL Digital servos (like KO or Hitec...etc) but 100% must be digital.

For PPM and PCM mode....you can use ANYTHING.

[momosport]

I think it looks like a Radar gun!

I have a 3PJS and I love it. 8 model mem, no major problems yet. I do have a question for someone who is familiar w/ this radio. If you could PM me and let me know how much experience you have w/ the radio.

Im impressed with the new radio, features look great. I had a 3PDF b4 my 3PJS and I am very happy. No need for me to upgrade.




MOmo

[Infernoracer]

If you have a US version of the 3PK then you are "supposed to" change the module to change the channel, not just change the crystals! That is why on the US versions the crystal is covered up by a peice of small plastic. I say you can change the crystals with no ill effect because all the Japan module's have the crystal exposed and they have no regulation on changing channels. In the US the FCC regulates this but I guess they don't have a FCC in Japan?

One other thing for the guys that bought the Megatech version of the 3PK........NO US WARRANTY. I go through this all the time with Heli stuff that I can get way cheaper from Japan(Gray Market) but as soon as you need something warranteed be prepared to send it oversea's. One thing about Futaba that I really like is Hobby Services, they fix all Futaba stuff and others, most of the time they are great. I recently sent a OS50SXH back that was shot and they sent me back a brand new engine. Great service to me!

[PCC]

Originally posted by Rookie Solara
Failsafe is on ALL 3 modes......PPM, PCM and HRS mode. Whatever version of reciever that you are using, you can use the Fail safe mode option, as well as the ABS....etc.

HRS receiver can only use FUTABA digital servos, not sure it is for ALL Digital servos (like KO or Hitec...etc) but 100% must be digital.

For PPM and PCM mode....you can use ANYTHING.

The failsafe is built into the receiver. If there is no failsafe in the receiver then there is no failsafe. On Futaba FM receivers the PPM receiver does not have a failsafe built in, as far as I can tell.

The HRS receivers only require digital servos, not just Futaba digital servos.

From reading the manual, it appears that Futaba does not want you to change the crystal in the frequency module but to change the entire module to adjust the frequency. That seems bogus to me...

[drumr racer]

That Radio looks soo sweet.

[Rookie Solara]

Originally posted by PCC
The failsafe is built into the receiver. If there is no failsafe in the receiver then there is no failsafe. On Futaba FM receivers the PPM receiver does not have a failsafe built in, as far as I can tell.


You might be right, I was not sure about where is the FAILSAFE at.....but my 3PK is the PCM version, so I think my receiver is the PCM receiver and have failsafe on it.......I think.

Is there anyway to TEST the failsafe feathure SAFELY without starting up the car running 60mph and turn off the radio...?

Thanks.......

And yes, I love the look of the 3PK because it does look like a Police RADAR Gun.....it is NOT the best looking radio, but uniquie.

[jac2]

hey! anyone know the 3pj module fits in the 3pk??

[PCC]

The PCM receiver has failsafe built in.

Set it up first (RTFM, RTFM, RTFM, Read The Freakin' Manual!), then, just turn off the radio and the ESC/throttle servo should go to brake and whatever direction you told the steering to go. If you are doing this with an electric car, make sure you have the car in the air just in case the ESC goes into reverse or forward. If your car is nitro then just don't start the engine.

[PCC]

Originally posted by jac2
hey! anyone know the 3pj module fits in the 3pk??

Yes.

[3xs]

As does the 1024 also

[redcarrot55]

Originally posted by blurredvision
The crystal is in the side of a module. The module is under a cover on the top/front of the transmitter.

Here is a pic...


Not sure If I get bad crsytals. I have a 3PK FM 75MHz with HR203 reciever. I bought a set of Futaba crystal set and a short receiver crystal for the HR203. However, the radio system doesn't work. I called Futaba tech support and they say I need to send the whole readio system over and let then do the channel switch becasuer they need to re-tune the transmitter module. Or I can buy a new transmitter module on a different channel. Tehy also say I voided the warranty iby switching the module crsytal. That doesn't make any sense to me. You can never switch channel on the track in just a few minutes or pay a fortune to buy whole bunch of modules just for switching channels. Is it true for 3PK? Has anyone successfully switch channel by switching a different set of crystal on a 3PK system?

[ncrego]

I've got a couple of different channels for my 3pk, and switch them pretty often, with no problems. The thing in the manual with not changing crystals is due to FCC regulations, and applies to all radios on the 75mhz band. It's all just technicalities, the FCC doesn't want you changing crystals unless a licensed tech can check to make sure that the radio isn't radiating any unwanted signals. Everywhere else in the world the 3pk is sold without the stick covering the crystals.

It was the same situation with the M8 that I replaced with my 3pk. The manual said no crystal changing, and the crystal hole was covered by a black sticker to hide it.

[redcarrot55]

I see. So do I need the Futaba SHORT receiver crystal for the R203HF receiver? I was told by Futaba and Tower Hobbies that regular Futaba crystal set (pat # FUTL91**) will not work in a 3PK with R203HF. This could be why my Futaba compatible crystal set I bought from Integy.com does not work. Their crystal is way cheaper then the geniune Futaba crystal and they claim it has better quality.

Thanks!

[ncrego]

I'm not sure about the integy crystals, but I don't see why they wouldn't work. I've used both Hitec and Futaba crystals in mine with no adverse effects. I'm not using HRS rigt now, just PCM and FM, but I did use a short futaba crystal in the HRS receiver and it worked.

[redcarrot55]

I also bought 2 Hitec crystal set for my 3PK, but it doesn't work, either. Thinking it could be the short receiver crystal thing being the problem, so I bought Futaba short receiver crystals from tower for the receiver and use the Hitec tx crsytal for the module. Again it doesn't work. Called another hobby shop and they said as long the crsytal is futaba, it should work, regardless short of regular crystal. So I bought the Integy Futaba compatible crsytal set, and it doesn't work either. So now the only crystal set that works is the one that comes with the radio system. And I have a bunch of useless crystals sitting around. How frustrating. I wonder If I need to crack the *#%$ module case open to tune something or ditch the R203HF for the regular FM reciever.

[ncrego]

Well, mine is on channel 77 originally, and with the HRS I only used channel 77 and 78, and it worked fine. With the PCM and FM, I've used a bunch of diferent ones (77,78, and a couple in the 60s) and they've all worked. I have one set of hitec xtals, those are the 78s, but the rest of mine are futaba shorts. I knwo that if you look at the Tower description for the FM receiver, it says that it only works with the short xtals....

[redcarrot55]

I just bought a regular Futaba crystal set and it work (of course). It seems the problme is the tx csyrtal. As long as the tx crystal is Futaba, the receiver works with both Futaba and Hitec crystals. Strange. Different get different result. I bet each tx module is tune a little bit differently.

I also crack open the 3PK tx module and find a whole bunch of dials. I believe two of them are for macro-tuning the ferquency between differnt bands like 40, 72, 75, 27. There are other three philip-type dials which I have no idea what they are for. The're probably for fine-tuning the frequency within the band to compensate the internal capacitance that deviates the expected frequency off course. I'll do some try and error on the dials.

[redcarrot55]

Has anyone tried to put the Hitec FM spectra module inot the 3PK to work with the R203HF receiver?

[ncrego]

Yeah, it works, but not with the HRS or PCM receivers.

[redcarrot55]

I guess as long as the PPM response is the same as the HRS, I could go for the PPM and get the Hitec Spectra module + the Novak XXtra receiver. Can people really feel that HRS is faster than the regular PPM?

[Pro3/nmt105]

Is anybody that has the american model able to switch channels without switching the modual? Is it just with the HRS reciever that you need a diffrent modual to use a diffrent channel or is it with all the modes. Can the Japanese moduals switch channels? If they can mabey somone could import a bunch of them and sell them to people who want the ability to switch channels.

[ncrego]

The answer to this question is about 4 posts up. Read the thread. The answer is yes, you just take off a sticker on the side of the module, and the crystal is sitting there. I have a couple different channels that I use with mine. And yes, it is the standard, US Magnum version on 75mhz.

[Fastburn]

can someone tell where I can get a good deal on this radio?
I saw a link to a hobby shop in HK, but the link didnt work and so far I cant find this radio in canada.

Please let me know where i can get one for around 250 - 270 US.
Dont care if its overseas.

email me thanks

Nate

Fastburn_Racing@rogers.com

[ncrego]

The best I've seen is from my LHS at $300. 106 Racepark, ask for Dave (the manager) and tell him that Nick sent you. Tax Free NH.

603-224-7223

[Jwreich]

Originally posted by redcarrot55
Has anyone tried to put the Hitec FM spectra module inot the 3PK to work with the R203HF receiver?

The response was yes in PPM but NO in PCM. Can anyone expand upon this. I currently run a 3PJ Super and use my Hitec Module in my TX while using both PPM and PCM modes.

From reading this board, it appears that Futaba has made some major alterations to their system to limit compatibility with Hitec.

I like the new design of the 3PK, but if I am restricted to $55 modules for each channel, then I'll keep my 3PJS...

Thanks in advance to anyone who will share on this topic.

JWR

[3xs]

I just stay with all futaba components all the way around to avoid such trouble, too much hassle mixing brands.

[Jwreich]

Originally posted by 3xs
I just stay with all futaba components all the way around to avoid such trouble, too much hassle mixing brands.

3xs,

Your right, but the last time I checked, Futaba didn't offer anything that would allow a "crystaless" radio system therefore limiting it full potentional. Now if you can merge the best of both worlds then it is a win-win...

So my original question:

quote:
--------------------------------------------------------------------------------
Originally posted by redcarrot55
Has anyone tried to put the Hitec FM spectra module inot the 3PK to work with the R203HF receiver?
--------------------------------------------------------------------------------



The response was yes in PPM but NO in PCM. Can anyone expand upon this. I currently run a 3PJ Super and use my Hitec Module in my TX while using both PPM and PCM modes.

From reading this board, it appears that Futaba has made some major alterations to their system to limit compatibility with Hitec.

I like the new design of the 3PK, but if I am restricted to $55 modules for each channel, then I'll keep my 3PJS...

Thanks in advance to anyone who will share on this topic.


JWR

[ncrego]

I will say that I don't know anyone personally who has tried the Spectra, just what I've read, and that is that it only works with PPM, not HRS or PCM. However, who knows, people do pass on bad info sometimes. I have a friend with a spectra at the track, next time I see him, I'll ask if I can try it out on my 3pk and report back with the results in various modes.

[JeepsDaddy]

my .0000002 cents on this one....

i reallllly dig this radio...

and everyone who has tried mine out has really liked the feel of it.... especially the balance, which is just perfect...

and i don't know how the weight of the 3PK actually compares to an R-1 or M-8... but it just feels much lighter.. a big plus in those 30+ minute gas mains...

and lastly... i raced 2 classes last weekend, and the supplied 700 mah cells still had plenty of juice left at the end of the day... the 3PK doesn't seem to be the battery hog that the R-1 is...

peace out... :)

[jia_zhuang]

Originally posted by JeepsDaddy
my .0000002 cents on this one....

i reallllly dig this radio...

and everyone who has tried mine out has really liked the feel of it.... especially the balance, which is just perfect...

and i don't know how the weight of the 3PK actually compares to an R-1 or M-8... but it just feels much lighter.. a big plus in those 30+ minute gas mains...

and lastly... i raced 2 classes last weekend, and the supplied 700 mah cells still had plenty of juice left at the end of the day... the 3PK doesn't seem to be the battery hog that the R-1 is...

peace out... :)

I was wondering if the 3PK came with rechargable battery and a charger. From what youve said it comes with a 700mah cell. What about the charger? And is this combo included as standard???

[ncrego]

Yes, the US Magnum version comes with a 700mah pack and a charger standard. As I understand it, the inported Megatech labeled one doesn't. I can also vouch for the good battery life, I ran 2 classes on Sunday, each with 3 5 minute qualifiers, and a main, plus a bunch of practice run, and the battery still has quite a bit of life left in it.

The only problem I've had with mine is that the PCM receiver is very sensitive to mounting, and will go into failsafe fairly easily if not mounted properly. Other than that (easily fixed, you should do it anyway), I haven't had a single problem with my 3pk.

[jia_zhuang]

But what about the megatech imported version? Has anyone brought one with the battery and charger? Cos I am thinking of ordering one from HK but I dont know if it will come with battery or not, I dont want to buy another battery and charger I just want to simply plug the charger into my 3PK and let it charge for a few hours and take it out to race around. I dont want to have to buy a separe charger and rechargeble batterys for the 3PK. Anyone know if it is possible to buy the megatech version with battery and charger??? Thanks for the help.

[ncrego]

Read the post right above yours, the Megatech version doesn't come with the battery and charger. You'll have to use AAs, or buy a rechargable pack.

When you figure it all out, it's stupid to buy the imported one. You will save $50, then you'll have no warranty, no local service, and no battery and charger. Plus, if you get the 40mhz version, it's illegal to use in the US. Just stick with the domestic version, if something goes wrong, it'll cost a lot more than $50 to fix the beast. I shudder to think what it'd cost to have Futaba open mine up.

Unless of course you aren't in the US, then it all changes, as Futaba packages the system differently in different markets. But, the one they sell in Hong Kong doesn't come with batteries. Check with your local dealer, or Futaba.

[jia_zhuang]

Yeah I dont live in the US. I live in UK and 40Mhz is open for use for RC. I dont think you can even get the 3PK in the UK so I wouldn't know if the 3PK will come with battery here. But if I order from HK the 3PK will cost me £219 including shipping, and the 3PJ here is already selling for near £400 so its a great saving, but I would like to order the battery and charger for the radio. Does anyone know if it is possible to order the charger and battery directly from HK???

[ncrego]

Well, the battery and charger are pretty much universal, it is a 8 AA pack of 700mah capacity, and the charger is the exact same wall plug slow charger that futaba and just about every other manufacturer ships with their radios. If it were me, I'd just buy an aftermarket set of Nimh AAs, they will cost you the same, and have 2 times the capacity, then charge them with your regular charger (assuing you have a good charger) or buy a charger off the shelf. Alternately, you could just order an after market pack, there are a number of places online you can order 8 cell AA flat packs with FUtaba connectors.

[3xs]

Pro match has 2000Mah AA's for sale just for the new radio's.

[PCC]

The batteries they use are smaller than AA's but bigger than AAA's.

[jia_zhuang]

OK I dont have a charger, so what kinda charger should I get? Could someone post some tech stats so when I search for chargers here I know it will work ok. I will get my own set of Nicad batterys. I just prefer the convenience of pluging ur radio and it charging. I hate to have to buy a charger that charges 4 cells at a time and making me wait longer.

[NMT_RACER_BOY]

just use the charger and the batts that comes with the radio

[ncrego]

Wow, you so didn't read the posts above :) For a charger, I'd just get a charger that you should be able to pick up at any store for the AAs. Since those are what You'll be getting for the radio.

[jia_zhuang]

I just got my 3PK and it rocks!!! battery life is kinda low with my 8cell 1700mah nimh batteries. Hummm has anyone else had problems with battery life? What kinda run times do u normally get?

[ncrego]

With the 700mah pack that comes with it, when I'm done with a racing day I've used the radio for around 2 hours, and it still isn't beeping. I'd think with the Nimh, you'd see around 4 hours or so.. What are you getting?

[Pro3/nmt105]

Im considering getting this radio with in the next week, its between this radio, the m8 and the xs3. I like this radio because it has every feature I could ever want and should suit me for the rest of my life, Im not experienced enough to use some of the features but I guess theyll be fun to play around with until Im ready to use them. I cant say I love its looks but it looks ok, kinda stunning, at least it stands out. The only thing keeping me from getting it is wether you can swithch channels without switching the modual with the US version, because I dont think this is the radio for me if you have to swithch the moduals, I definitly cant afford to do that, can anybody verify that you dont have too with the us version? I checked out the online version of the manual and it seems the the only reason you cant is the FCC regulation. Would you guys say in general it feels better than the m8, because I dont think Im gonna get a chance to hold it before I buy it, my lhs has it but they rip you off and theyre probably gonna get angry at me because I look at stuff ther but buy it online. Which frequency do you think is least commonly used 67, 88, 89 or 90?

Thanks

[NMT_RACER_BOY]

uh... you don't have to change the module, you can change the crustal... read the thread!

you can also fit Hitec's synthesised module for the lynx 3D which is a direct fit

[Pro3/nmt105]

I read the thread a few times and the only person who said they could change the crystal was ncrego and I just want to make sure that other peoples Magnum radios can too, Id also like to know how it feels compared to the m8.

Thanks

[ncrego]

Do a search on this system for 3pk, there are a couple of other threads that discuss the same thing, and there are plenty of other people who change the crystals in theirs as well. As for feel, they're different. I think the 3pk is better balanced, and lighter than the M8, plus the screen and functions are easier to see and use. I really see no advantage to the M8 that I used to have over the 3pk. I think the 3pk is a better designed, and more useful radio. I especially being able to totally program all of the buttons on the radio for any function that I want. You can make the 3rd channel do just about anything you want, from on off to multi position to fully proportional, as well as mixing it with other channels.

The 3pk is the most versatile, best designed radio on the market today.

[jia_zhuang]

Originally posted by ncrego
Do a search on this system for 3pk, there are a couple of other threads that discuss the same thing, and there are plenty of other people who change the crystals in theirs as well. As for feel, they're different. I think the 3pk is better balanced, and lighter than the M8, plus the screen and functions are easier to see and use. I really see no advantage to the M8 that I used to have over the 3pk. I think the 3pk is a better designed, and more useful radio. I especially being able to totally program all of the buttons on the radio for any function that I want. You can make the 3rd channel do just about anything you want, from on off to multi position to fully proportional, as well as mixing it with other channels.

The 3pk is the most versatile, best designed radio on the market today.

I second that! Man with the wheel position I felt at first a little uncomfortable, but good thing they made the adapter for it. Once I got that on it was great! Feels about as light as my old 2ch AM Hited pistol grip. Function wise it can't be beaten by any other radio out there. And the best thing is that the screen is so large and clear, and the menus are so easy to understand and to access. As for balance it is so perfect. Problems I had with battery life was probably cos the battery wasn't fully charged and I used the backlight function a bit to much. And I only paid $248 with shipping for it!!! What a buy!!! U can't even get this radio in the UK.

[Pro3/nmt105]

I guess towerhobbies is the cheapest online place you can get the Magnum PCM version at?

jia_zhuang do you have the US version? If so where did you get it for $248?

[jia_zhuang]

Originally posted by Pro3/nmt105
I guess towerhobbies is the cheapest online place you can get the Magnum PCM version at?

jia_zhuang do you have the US version? If so where did you get it for $248?

I have the megatech version. And I got it off ebay from a hong kong dealer. Its the FM40 PCM version and it doesn't come with the charger and the battery like the US version but I dont live in the US I live in the UK so its no problems for me. There is a few online webstores in HK that will sell the megatech 3pk for around $200USD shipping should cost about $50 but some will try to rip u off by charging u double for that. Just make sure to tell them u want them to delcare a low price for it so u avoid tax and duty when custom are checkin it out.

[NMT_RACER_BOY]

i got my us version from towerhobbies..
it feels great, but if you come from analog radio, it is a little heavy feeling, but it is also sturdy.

PRO3 I would go with your budget, M8 and 3PK are both great radios.

[Pro3/nmt105]

I think im gonna go 3pk its $45 more than the m8 with towers $15 off but its pcm which the m8 is not and it has a built in failsafe, and I would end up buying a failsafe anyway, it also has the rear mounted screen which looks easier to read than the m8's and more features. I also think the m8s due for replacement soon and I dont want to buy a radio right before its replaced.

[jia_zhuang]

I drive with the remote screen facing up and that suits me great. The M8 looks rather clumsy. Also the 3PK screen is much better and u can set 5 point throttle acceleration points. Amazing what technology can do these days.

[Pro3/nmt105]

Well I orderd one 2 nights ago cant wait to try it out, but Of course we got six iches of snow here on LI yesterday and its April! we usually dont get any even in the winter...

[NMT_RACER_BOY]

Originally posted by Pro3/nmt105
I think im gonna go 3pk its $45 more than the m8 with towers $15 off but its pcm which the m8 is not and it has a built in failsafe, and I would end up buying a failsafe anyway, it also has the rear mounted screen which looks easier to read than the m8's and more features. I also think the m8s due for replacement soon and I dont want to buy a radio right before its replaced.

goooooooooood thinking, those were the reasons that i got this awesome radio, i wish i can show you picture of mine, it's decked out with a lunsford decal, two hpi decals (one at the wheel which really goes well) and a "powered by OS engines" decal

[tranced]

Originally posted by Pro3/nmt105
Well I orderd one 2 nights ago cant wait to try it out, but Of course we got six iches of snow here on LI yesterday and its April! we usually dont get any even in the winter...

LOL

tell me about it..

i live in queens, saw snow yesterday .. was thinking *** is going on?? :p

[Pro3/nmt105]

yea, it was like 70 degrees and I was thinking great I can finally break in the sirio on my ntc3, and then of course the next day it snows 6 inches, at least almost all of it melted today.:)

[tranced]

I have a question about the 3PJSuper, which I have.

If i use the hitec spectra Tx module, could I use the JR multichannel receiver (one that comes with the JR XS3) too? Would they work together?

[ncrego]

No, futaba and JR operate on a different shift. It goes liek this, Futaba and Hitec are compatible, and Airtronics and JR. At least on FM.

[Pro3/nmt105]

I just got mine yester day and this thing is soooooooooo sweet!:D Its much smaller and lighter than I thought it was...
I have a few questions though:

On the home futuba screen it appears to time how much time youve had the radio on, what is this? is this so futuba can see how much youve used it for service purposes?

I have the pcm version and I know your not supposed to use it with the antenna down... but I didnt realize there was a switch that allowed you to program without transmitting so I had the radio on for a while (not with the reciever on) when I was setting up model names for all my cars and just looking through the features was this damaging to the modual, or is that only if your actually using it with the antenna down?

It tells the battery voltage on the home screen, what is a high voltage and what is a low voltage? when I turned it on for the first time it was around 10 volts now its around 9.5

I know the 3pk has a built in fail safe, but what events does it work in? any of these: interference, low trans batt, low reciever bat, glitching, out of range or loss of signal ect...?

[NMT_RACER_BOY]

you can reset that timer any time you want and i was wondering what time did yours come in? mine was at 0min

It doesn't really matter, (the attena collapsed thing) as long as you don't do it for an extended period of time...

The 3pk send certain encodes to receiver when they are both working and when reciever don't receive anything, it remembers the code and sets the servo where you wanted them on fail safe mode.

the batt does not come charged so you should charge it

[Pro3/nmt105]

My timer came on 0 min and now its up to an hour from browsing and setting up, the radio was on during this time but it wasnt all at once. I didnt yet know of the display only switch when I did this, note that during this time the reciever wasnt on or hooked up so I dont think it could communicate with it, is this still bad for the modual and is it possible I damaged it? I thought the display switch just turned off the screen or the back light until I figured out it allows you to program without transmitting.

what if the reciever pack dies? does the failsafe notice the low voltage and go to the preset positions?

[Pro3/nmt105]

anybody know the answer to my question? Im a little nervous I hope I didnt damage the modual.

[jia_zhuang]

dont worrie its gonna be fine... Its not gonna kill it or anything. As for the functions like failsafe, just read the instructions its pretty clear how futaba has set it all out.

[mugenseike]

I have this radio and i use it on my tc3, great radio, left me broke as hell though.:( but it was worth every penny.:D
-Dave
p.s.. then you see they come with a better version the next week of it's debut that would be so messed up(not specificallt talking about this radio, talking about the radio's in specific).
-Dave

[NMT_RACER_BOY]

you can have a choose low battery thing on Failsafe function
i am pretty sure thats for the reciever batts, try it your self

[Pro3/nmt105]

Yea I read over the manual and it says you can have a failsafe in the case of the reciever battery dieing. I wonder if it can warn you when the reciever battery geta low?

[Pro3/nmt105]

does the 3pk fit in this carrying case?
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXCKK8&P=7

[ncrego]

It looks to me list that is the case for the 3pdf. What I did was buy an aluminum breifcase like tool case from Home Depot, and then cut some foam to fit it. It's much more sturdy than that other case, plus it has enough room for my Reedy Quasar Pros. Case cost $20, foam was $5.

[electricnitro]

Better yet, go to Lowes and get the same aluminum briefcase for about $20. It has foam in it that is already cut in little squares. All you need to do is take out some squares to form the shape of the radio. It has a lifetime warranty too.

[Chubby RC]

I just use the one Futaba makes for the 3PK

[Pro3/nmt105]

where can I get the one Futuba makes?

[Chubby RC]

I bought mine from my LHS. I have seen them on e-bay, or there is an on-line shop called rainbowten in HK they sell them.

[jia_zhuang]

rainbow ten is japanese shop. they r good and fast too.

[Pro3/nmt105]

I heard theres a setting for throttle sensitivity so that you can use a dial to control how fast it takes off for traction purposes in trucks, what is this called.

Is there any place I could get a pcm reciever for cheaper than tower, I dont wanna pay $90 for it. If I order one from japan or somthing will it be compatable with my radio if its the same frequency and will it have US warranty? (im just asking about the warranty because on my US reciever it dosnt specify wether its magnum or megatech so I dont know if Futuba could tell)

[AreCee]

Originally posted by redcarrot55
Has anyone tried to put the Hitec FM spectra module inot the 3PK to work with the R203HF receiver?

The Spectra module works with PPM, PCM and HRS. The transmitter will send it's signal out on any of these modes. You will need the appropriate receiver to receive these modes, ie a R113 1024 PCM for PCM, any 75 MHz FM receiver for PPM and the R203 for HRS.

The Spectra is only available in 75MHz.

[AreCee]

So far I've had no problems or glitches using this system with the Futaba PCM Rx with Futaba crystals, HiTec DCX Rx with Hitec DC crystals and Novaks XXtra Rx.

I get about 2.5 to 2.75 hours off the NiCad battery which I charge at .5 amps. I also made a NiMH 1600mah pack from eight Ray-O-Vac AA batteries using cutdown battery bars and a Futaba/HiTec connector/wire set up from an old battery box, these I charge at .5 amp but with a delta V of 3. This pack lasts about 4 hours. I called Futaba's distributor to ask them if a dry cell holder is available and it is not.

This is a real easy radio to set up as long as you read the manual, however, there are a few things in there that make very little sense until you try using the functions. I personally like using the lap timer set on PS2 with the stop/reset on PS1 it's easier than using a stop watch or having someone else time your laps.

[Pro3/nmt105]

you may have it set to run in pcm, with the spectra modual but its probably actually running in FM, since thats all its designed to do. You can check if its really running in pcm by testing if the failsafe works.

[AreCee]

Originally posted by Pro3/nmt105
you may have it set to run in pcm, with the spectra modual but its probably actually running in FM, since thats all its designed to do. You can check if its really running in pcm by testing if the failsafe works.

It works and I'd love to tell you how but it would take too long. Take my word for it because I work in engineering with various radio systems (currently in project management and no longer in design). Essentially the module is a messenger that sends out what the radio tells it to, if it's told to send out Pulse Code (PCM) that's what it sends out same for PPM and HRS (a faster version of PPM).

The failsafe works just fine. Think of the radio as your computer modem and the module as the phone line. The modem emits the pulse signals carried on the analog phone line ergo digital comms. The 3PK emits PCM to the Spectra and then it's sent out as a PCM signal. I believe Futaba doesn't use synthesied modules because Hitec may have a Japanese patent on their technology which would cost Futaba too much to license. IMHO.

Also they are correct to warn about using the radio with no antenna or collapsed all the way down. This changes the load characteristic on the module and will cause it to get hot due to the lower load. This doesn't happen in the display mode only in transmit mode. You can leave it on indefinately in display mode. Next time you finish a 30 minute main feel the module, it will be warm.

[Pro3/nmt105]

Ok sounds like you know what your talking about.

Does anybody know know the answer to my question, is there a setting for throttle sensativity and what is it called?

Thanx

[jia_zhuang]

yes its called throttle exponential

[Pro3/nmt105]

can it be set to a dial?

[AreCee]

Pro3/nmt105

BTW I just happened to look at the Spectra module just now and guess what. Right on the top it reads "SYNTHESIZED RF MODULE MODEL # HP-PLL(PCM/PPM)". I guess that should put this question to rest.

The Throttle exponential one of the options you can set a dial (DL*) or trim (DT*) to. You can set it in FUNC-DIAL it's call EXP-F for forward throttle. It's all on page 34 in the manual.

[ncrego]

Doesn't anyone read the manual anymore? You paid $300 for a piece of electronic equipment. It came with a very well written manual with diagrams, and plain english explanations of all of its functions. RTFM. If you lost it, you can read it online at Futaba.com


RTFM

[Pro3/nmt105]

I just didnt have it with me at the time, I checked in the manual for how to charge the battery and its a little unclear to me, does the included charger discharge? and since it says it has overcharge protection, can I leave it on for like a full day and then just take it off when I have time? also do the lights on the charger indicate when the battery is finished charging?

Thanks

[Marciano1969]

Thinking about getting the radip but I just want to make sure of one thing, I have heard if you run the hrs receiver you will have to run a long crystal in the radio and a short crystal in the reciver. There was a guy at the track that sold his radio because of that I know you will need to run two digtals servos, but want to make sure you can use the standard crytals for the radio. He didn't have the problem with the pcm reciver only the digtal. I lhave seen in the post where you had to use futaba crystal in the transmitter but just want to see if any of you have had an issue like above. Thank you

[Pro3/nmt105]

Does anybody know how you can change the failsafe settings back to hold? I set me steering, but then realized hold would be a better setting so if im turning it dosnt go straight and crash into a wall before it stops. It dosnt say in the manual id really like to know other wise I have to reset everything to change it.

[AreCee]

Marciano: Yes, you need to use the short receiver crystal in the HR receiver. There is no short transmitter crystal. The PCM uses the regular FM crystals. Even with that inconvenience I wouldn't get rid of the radio for such a minor thing, been through the crystal dance with other radio systems also not just Futaba.

Pro3/nmt105: I just tried to switch back to hold and couldn't find a way except to reset. I never found this to be a problem since I usually preset a brake position for the failsafe. I'd rather have the car slow or stop rather than not turn or keep turning on the track.

[Pro3/nmt105]

I have the throttle so that it goes into full brake, but if Im in a turn on the track it would be better if the steering holds the setting, otherwise it could go straight, during a turn and hit into the wall before it stops.

[ugman]

Hey guys, I have the 3PK and was wondering what novak ESC would work with this radio. Will the Brushless System work with this system.

[AreCee]

Originally posted by ugman
Hey guys, I have the 3PK and was wondering what novak ESC would work with this radio. Will the Brushless System work with this system.
All of them will work!

What is it that you're really trying to ask?

[ugman]

I want to get a XXX-4 and use this radio. I'm going to pick up another reciever, and I guess I dont really know how to setup the ESC with the radio and wanted one that would be easy to setup.

[eurylokhos]

They are all easy. If you've set up an esc with another radio, it isn't any different with the 3pk. Just plug it in, and follow the instructions with the ESC, which is generally just pressing one button. Simply pick one that you like and is in your price range.

[Jackal]

Wanting to buy 3PK and need help in choosing which mode to use. Please give your reasons for your choice. Thanks.

[AreCee]

Originally posted by Jackal
Wanting to buy 3PK and need help in choosing which mode to use. Please give your reasons for your choice. Thanks.

Do you only have digital servos or are you planning to use only digital servos? Yes, then get the HRS. No, then get the PCM.

Both can be programmed to function as a fail safe if that is what you're after.

[IrishStout27]

I'm a newbee and how does this radio compare w/ the JR XS3? And what's the difference between Futuba FM/HRS and PCM ? Which one would be the one to buy?
-Chris

[Jackal]

I mean what are the advantages of using HRS over PCM and the other way round?

[AreCee]

Ahem ..... I'lll repeat myself again.

HRS; three channel, faster response, must use only digital servos, can be programmed for failsafe functions. Uses regular FM signal (PPM). Uses the short crystal.

PCM; three channel, normal response, can be used with any servo (analog or digital), can be programmed for failsafe functions. Uses Pulse Code Modulation (PCM). Uses the regular crystal.

These are the receivers that come with the 3PK. The transmitter is identical in both cases and uses the same module (PPM/PCM).

Like I said before it will depend more on which kind of servos you will be using than anything else.

[AreCee]

Originally posted by IrishStout27
I'm a newbee and how does this radio compare w/ the JR XS3? And what's the difference between Futuba FM/HRS and PCM ? Which one would be the one to buy?
-Chris

It sort of doesn't compare. One radio is geared to the advanced hobbyist looking to upgrade their system. The other is intended to be used by the more "racer" oriented hobbyist. Both systems are good and both have their pluses and minuses.

Read my previous post for the fundamental differences between HRS and PCM. They're both good but targeted to different markets.

The JR XS3 is a good radio that offers synthesized frequencies (crystalless) over the 75MHz band. The 3PK can switch modules to use 27, 40 and 75MHz but uses crystals.

The JR comes with a 75MHz crystalless 3 channel receiver. The 3PK comes with either the HRS or PCM receiver.

The JR comes with servos (both are analog) of which the Z590M is a great bargain with 85oz of torque and .15sec transit time at 6V. The 3PK doesn't come with servos.

The JR doesn't come with batteries. The 3PK comes with a Tx NiCad pack and charger.

The JR cost about $240 the 3PK about $330.

The biggest difference is in the programability of the transmitter. The 3PK offers much more programming to customize your set-up just like the more expensive JR R-1 radio.

The biggest difference is how the radio feels in your hand and your budget.

[PCC]

Originally posted by Jackal
I mean what are the advantages of using HRS over PCM and the other way round? HRS is quicker than PCM but requires more expensive digital servos. PCM is slower in response time than HRS (though it may be hard to tell) but you can use any servo you want (or have) with it.

On the other hand, if you plan on using your radio with an electric car, I would suggest you buy either the Futaba R133F receiver or the compatible Novak FM receivers. The R133F is a simple three channel FM receiver that does not offer HRS nor PCM. What it does offer is FM performance and better speed than HRS at half the price. It is not as glitch proof as either of the more expensive receivers, though, because it is an analog RX while PCM and HRS are digital.

The Novak XXL and XXTra receivers work well for this radio, too. They are analog receivers, the XXL being an extremely small one, and the XXTra being a synthesised receiver (no crystals).

I posted this before but it is worth mentioning here. The 3PK comes with a module that transmits in FM (analog, PCM digital, and HRS digital) but they are going to offer an AM module that will allow you to use your AM Futaba receivers on the 75MHz band, or any AM receiver on the 27MHz band. These additional modules will increase the flexibility of this transmitter tremendously! Not only that, but it's been rumoured that the Hitec Spectra module will drop right in to the 3PK and will work just fine for PCM, HRS, or analog FM transmission, making the 3PK, when used with an XXTra receiver, crystal-less...

[CarterTG]

From the 2003 Chicago Hobby Show. At the Kyosho booth, one of the company drivers was controlling his Mini-Z through a Futaba 3PK & the new 27mhz AM Module! Being able to do this with the 3PK all of a sudden makes getting a Mini-Z cooler!
:D ;) :D

[CarterTG]

As if giving a Mini-Z added performance from a 3PK wasn't interesting enough, Futaba's new catalog is listing something just as newsworthy...

Looks like Futaba's officially listing a SYNTHESIZED MODULE for the 3PK! From page 23 of their catalog (http://www.futaba-rc.com/sellsheets/futz2002-2003-catalog.pdf):

[NMT_RACER_BOY]

Wow
that's a sweet news

[Redfox]

Hey does anyone know why Futaba has two different battery holders (the 4 cell holders for RX packs) with the two different plugs?? Cos i am using the one with the smaller plug from my old AM attack radio, and the old switch, but i got a new switch with my 3PK... so the old battery pack doesn't fit it... does anyone know why? Its on the futaba catalogue too...

:confused:

[ugman]

When I have the antenna screwed oin all the way, it still jiggles side-to-side. I found that the screw holding tghe white wire from the circuit board to the base of the antenna is loose. I can not get a screw driver in there to tighten it down. Any suggestions on how to get the radio completely apart so I can tighten it up? I cant find an exploded view of the radio anywhere...

[Redfox]

If u are unsure of exactly what to do, i suggest u send it off to your nearest service centre, just so you don't void the warranty. However if you are pretty sure about yourself, just take it apart piece by piece, and do it carefully. Start at the back of the radio etc...

[mooplea]

i have done this... my screw was loose! (haha) it got looser, and looser, causing MUCHO interference...
i tried everything to stop interference before i found the screw was loose..

i took it apart and fixed it, i ended up soldering the screw to the wire so i would NEVER have the problem again..


the secret is a scalpel blade and a lot of patience.. you need to prize the silver parts off slowly and take your time with the scalpel blade... they will come off.. they are just pressed in...
once you get those off you can take the screen off and then take the radio apart (down the middle) and get a screwdriver in.... definately use some loctite on it or something to prevent it happening again...



jimmy

[ugman]

Guys, I was wondering if anyone have put the HRS reciever in a XXX-4 ro any bat. powered vehicle. I'm a little nervous because the servos say they are for 6v only and I'm pushing 9v. Is this going to fry my servo? let me know what you guys think...

[Redfox]

You are pushing 9V??? how so? If you got some form of BEC circuitry going on, you will route about 5.2V for the servos... that's why you can run 7.2V packs for your electric car and still run less than 6V for the servos... I got a mate who is running an HRS receiver in his x-ray and it's fine. However, just remember, you need to run DIGITAL servos if you wanna run HRS... if you use standard servos, they will jitter like crazy and fry themselves. It has to be digital.

[ugman]

After reading deeper on the Novak website, it explaines that there is built-it circuitry that regulates the voltage to the servos at 6v. So there is really no problem... Thanks

[Redfox]

Hey presto!! Good stuff :D

[ugman]

After taking a trip to the hobby shop, I found out that I cant get 27FM trans. crystals only reciever crystals. Is this right?? IF you know where to get the transmitter crystals, please let me know the part numbers and where to find them . I can only find the reciever crystals on Tower...:confused:

[AreCee]

Originally posted by ugman
After taking a trip to the hobby shop, I found out that I cant get 27FM trans. crystals only reciever crystals. Is this right?? IF you know where to get the transmitter crystals, please let me know the part numbers and where to find them . I can only find the reciever crystals on Tower...:confused: You can buy the crystal SETS which include both the Tx and Rx. Those are available.

[limitz]

Can I use Standard Futaba S3003 Analog Servos for the 3PK HRS/PCM transmitter, reciever?

thanks in advance,

-limitz

[colinradford]

Yes with a PCM receiver.

No with the HRS receiver (must use digital servos).

[Little_Horn]

I'm thinking of buying a 3pk in the future. I just don't know if I really need a digital (HRS) reciever.

I'm planning also to buy a kyosho inferno mp 7.5, inicially to bash only, and maybe to race it later.

What do u guys think?

I'm more tempted to buy the PCM version because, I don't think I will ever need the extra signal response from a digital reciever and, the PCM version is 50 € (+- $50) cheaper than the HRS version.

Please help me.

Should I really buy the HRS version?

Thanks! ;)

[AreCee]

The HRS receiver isn't digital but requires the use of digital servos. Regular servos will just gitter and glitch. So if you plan to buy new digital servos then go with the HRS, if not then get the PCM.

[bsodmike]

Nice thread guys - I was alerted to not running the unit with the antenna down (probably cause it alters the electrical length) - anyways, I did a second test today with both S9350 servo's connected, works like a charm.

After reading this thread I noticed that I had also gotten mine with a black sticker on it. I pulled out the transmitter module, removed the lid and was able to easily remove the sticker and pull out the crystals tag that was tucked inside - so it's all good now :)

I just always get this 'feeling' that it's cheaply made...doesn't really feel solid at all. Maybe it's the silver that's putting me off hrm.

[kris lim]

Hi
what do you guys think of this DSM System? im thinking of getting one
i have been useing the 3pmfm until now but might upgrade
anyone useing one or got any comments
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXHLK3&P=7
http://h1071118.hobbyshopnow.com/products/description.asp?prod=SPM1003

[bsodmike]

Question: Are the airtronics controllers much more solid and compatible with the futaba S9350 digital servo's?

Thanks,

Mike

[kris lim]

so if i order a 3pk i can order one of each recevers and have one in my car with digatal sevos, and the other in my car with normal sevos and change the mode on the tx
it looks like hrs is better
thanks kris

[kris lim]

how do you change the mode on the tx from hrs to pcm?
thanks again

[Duster_360]

3PK has a modulation function "Mod-Mode" on the radio that allows you to select either PPM PCM or HRS as the modulation. Are you asking actually how to do it?

Select menu 1, select mod-mode, choose pcm. Confirm the change by holding the + and - down simultaneously for 1 second. Close by pressing end, end, end. Now, cycle the tx power (turn tx off, then turn it back on) and you will note display now shows PCM in the lower right corner of the screen.

You can find the full manual on line on futaba's site as a pdf if you need the manual.

http://www.futaba-rc.com/manuals/index.html

[PCC]

If you set up profiles for your cars you should be able to set up one for HRS, one for PCM, and even one for PPM and the radio should remember which is which.

[bsodmike]

could some one explain to me how 4.8v @ 100ma (output from the futaba charger) can be used on 6v receiver batteries? They'll only charge up to 4.8v...

:confused:

[kris lim]

cool thanks, Duster_360 & PCC, so you don't need to buy any other parts to change the tx, thats good
but i don't know what to get the hrs or pcm??? i have digatal survos, but what is the advantage of going to pcm?

[bsodmike]

PCM = pulse code modulation but from what I've read, HRS seems to be faster. Faster == more responsive, end of the day it all depends if it is worth it :)

What kind of protection does the 3PK receiver provide for a low receiver battery? Obviously if it dies out the servo's will stop at the last position, and the engine will continue to run.... :eek:

Update: OK, the failsafe seems to kick in before it dies...interesting.

[kris lim]

so what do you recomend ? this radio says 3PK Black Version with HRS ,but is it the titanium model?
http://shopping.rcmodel.hk/product_info.php?cPath=5_24&products_id=3801
thanks

[bsodmike]

What do you mean by titanium model? (am I missing something here?!?)

-- seems only the color. I prefer it like this tbh :)

[kris lim]

sorry like this one
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXHLK3&P=7

[Duster_360]

Obviously this is just my opinion, but I run pcm for everything. There's little doubt HRS with digital servos has faster response time. To me, due to the additional expense of the digital servos vs ordinary servos, the question is can I really see or benefit from the diff? Since I'm not racing the answer is pretty obvious and I've stuck with pcm even though my 3PK came with an HRS rx. I've never used it.

The opinions I've heard is you have to be a pro level racer to be able to realize the added benefit from going HRS. I know a few who went HRS out of curiosity and couldn't tell any diff. Course, they were already using quality, fast response time servos which makes the diff harder to see or notice.

3PK running PCM or HRS has both a fail safe and a low batt function - if you remember to activate or set it up - upon activation, will set the servos to the position you set it up for - ie full or moderate brake. 3PK let me pull out all my fail safes and run without and still have the protection

[bsodmike]

Thanks for that post Duster - I've set mine for full brake and steering at dead center :)

kris lim - extra $55 - 60 for a black coat of paint, that's a bit steep...unless I'm missing something with this titanium model (The body is still plastic the last time I checked...)

[Duster_360]

kris lim- the titanium 3PK you linked to at Tower uses the synthesized tx module - no crystal. This lets you change the channel to match the rx's channel. If you use a synthesized rx also, you can change channels by just setting both to the same new channel to avoid any frequency conflicts without messing with crystals. Thats where the extra $$s are going.

Also, I've read warnings about buying the 3PK that is labelled MegaTech, but I think thats because its the european version and uses something other than 27 or 75mhz (40mhz I think), but I'm not sure if you're in the US or not.

bsodmike - you're welcome. Thats where mine is set on all 7 rcs its running for me. I've changed to a 2300mah NiMh tx pac - I found the 700mah NiCd futaba batt pac just wouldn't last a day - especially if you ever forgot to turn it off just once during the day.

[kris lim]

thanks guys, im in new zealand, and im alowed 40mhz but not alowed 75, 75 is our police band, the titanium one synthesized would suit me, but i cant see any synthesized
3 chanel rx from futaba i already have digatal survos so i might do HRS, i like the look of the dsm system but the extra cost is a worry and they seem to be al out of stock?
i have a 3pm at the moment and cant use it or my two recevers they are 75mhz so i have them on ebay, for 100US$

[Duster_360]

Here's a futaba synth rx, R309DPS, but its a 9channel device - its the only one mentioned on their products page.

http://www.futaba-rc.com/radioaccys/futl26.html

Checking tower - tower says its discontinued. Anyway, I know from reading that the Novak synth rx works with the futaba synth tx and its available as a 3 channel device, but it looks like you'e correct, there is no currently available 3 channel futaba synth rx. Seems like its was/is more airplane oriented though?

I've been seeing complaints about the fit of the spectrum tx module for the 3PK -there are complaints that its not fitting right and there're concerns developing about potential breakage of the tx module due to handling. Its apparently a tight fit and requires some manhandling to get it snapped into place. Some have complained they can't get the 3PK's tx cover to fit over the Spectrum tx module either.

I was interested in this until I started seeing these concerns. I'm going to wait and let them get all the bugs worked out and make it fit as well as the futaba module fits. There have been some decent bargains on ebay where folks are selling their tx modules and rxs because they are converting to Spectrum.

[kris lim]

thank
so is there a diference between the
3PK MegaTech Titanium Black
and
3PK Titanium Black Synthesized

[bsodmike]

So anyone here charge 6v hump packs with the futaba charger? There is no way it charges to 6v...

[kris lim]

this is the charger i use its mint, it beeps and flashes, when the baterys are charged
http://www2.towerhobbies.com/cgi-bin/WTI0095P?FVSEARCH=LXCTZ5&FVPROFIL=++&search3=Go

[AreCee]

The problem with buying a MegaTech radio in the USA is that Futaba will not do any warranty work on it. In order to receive the full warranty in the USA you have to buy a "legally" imported one. I have had my 3PK for over two years without any failures so for me the warranty issue would have been moot.

The Titanium version is just as described, it comes with a synth Tx module but you still need to buy additional Rx crystals for the supplied receivers. Futaba is supposed to be releasing their synth receiver some time this year (????). The Novak 75MHz synth Rx is designed to work with all radio systems even positive and negative shift and offers up to five channels. The 27MHz is a universal type.

The Spektrum module fits into the 3PK but because its a couple millimeters taller than the Futaba module it replace you can't use the module cover. A minor nuisance in my opinion and not worth worrying about. I have the DSM system and it works just fine indoors and out.

[bsodmike]

The crystal is inside the transmitter module. As you are in the US it will be hidden by a sticker. I opened my transmitter up to make removing the sticker much easier :)

Mike

[AreCee]

That is correct. The reason there's the sticker over the access port is because under FCC (Federal Communications Commission) rules it is illegal to alter the frequency by replacing the crystal without retuning the radio, thus the sticker. All the radios sold in the USA have those stickers be it an AM or FM.

[PCC]

thank
so is there a diference between the
3PK MegaTech Titanium Black
and
3PK Titanium Black Synthesized
The 3PK is marketed as a MegaTech radio outside of the USA. Internally they are no different. If you ignore the MegaTech name there is absolutely no difference between them. The difference is in the accessories that come with the radios. In the US the radio comes with a charger, 700MAH rechargeable battery pack, receiver, On/Off switch, and the drop-down module for the steering wheel. My brother's MegaTech 3PK came with just the receiver and drop-down module but he paid a lot less for it than I did mines.

One other difference is that in the US they are sold in 27MHz and 75MHz while in Hong Kong they are sold in 27MHz, 40MHz, and 75MHz. The modules are interchangeable so switching between one frequency to another, even from FM to AM is possible. Futaba makes modules for the 3PK in 27MHz AM, Synthesized FM and FM, 40MHz FM, 75MHz AM, FM, and synthesized FM.

[kris lim]

well i was about to buy the dsm then i saw the size of the recever ,is this right
41.2x 27.0x 15.3mm thats far to big to fit under my radio plate in my 950r?

[AreCee]

well i was about to buy the dsm then i saw the size of the recever ,is this right
41.2x 27.0x 15.3mm thats far to big to fit under my radio plate in my 950r?
The Spektrum Rx is slightly larger than the Futaba PCM Rx I replaced in my Kyosho MP777 but there was enough room in the radio box where it wasn't a problem.

[AreCee]

thank
so is there a diference between the
3PK MegaTech Titanium Black
and
3PK Titanium Black Synthesized
Just like PCC said and in addition if you live in the USA is that Futaba will not warranty a Megatech branded radio.

[jeepnyy]

I have the SPEKTRUM DSM system and never have any problem with my 3PK. The module fits just right. I use the cover from "chapstik" lip balm to cover the antenna hole after removimg the original 3PK antenna. The receiver is not that much bigger than the Futaba 113i PCM . The best thing is that it only comes with a very short 8.5" antenna on the receiver and 4" folding TX antenna. The feature I like the most is that you don't need to worry about frequency conflict. You can practice anytime without waiting for an open channel and virtualy no glitches at all. It is well worth the money. :)

Henry E.

[AreCee]

The Spektrum Rx is slightly larger than the Futaba PCM Rx I replaced in my Kyosho MP777 but there was enough room in the radio box where it wasn't a problem.
OOPS! I meant to say the the Spektrum DSM Rx (41mm x 27mm x 15mm) is slightly smaller than the Futaba 113 PCM Rx (43mm x 28mm x 16mm) but is slightly larger than the Futaba 203 HRS Rx (37mm x 26mm x 14mm).

[kris lim]

thanks

[kris lim]

ive got my 3pk and spectrum on the way, its all comeing from one shop.
HK is just around the corner from me (new zealand) so it'll only take a few days to get here, yea ha
i ordered it from rc-mushroom.com, its a good site for me they have a lot of 950r parts,so i hope it all goes well, thanks guys for all the help
any cool serpent sites ya know of let me know

[bsodmike]

Hrm, I seem to have missed this - the 3PK I currently have has a 75Mhz crystal and also have the R203HF 75Mhz receiver.

I.e. how to convert this to work @ 40Mhz? (change the receiver and get 2x crystals?)

-- OK the confusion started from this:

http://www2.gpmd.com/image/f/futl0344.jpg

http://www.pitstop-shop.nl/media/hrs_ontvanger.JPG

Notice how one is marked '75Mhz' and the other '40Mhz' but the SAME model...I'm just thinking that this is for legal issues etc...

So, to work @ 40Mhz, just get 'any' two (Tx/Rx) 40Mhz crystals?

[AreCee]

Think again! You bought the radio from Tower but you're in the UK. The only frequencies Tower can sell in the USA for ground use are 27MHz and 75MHz. Now to get 40MHz you will need a set of crystals for whatever channel you want on the 40MHz frequency, and Transmitter Module in 40MHz and a 40MHz receiver.

You can't take a 75MHz system and change it to 40MHz with only a crystal swap, won't work, never happen. Of course you could replace the oscillator in both the Tx and Rx with one that's 40Mhz but then I wouldn't even know where you could find the parts and if you could then you would need a spectrum analyzer to tune the radio.

[bsodmike]

OK np thanks, that's what I was wondering.

[PCC]

They sell the 40MHz transmitter module and receivers in Hong Kong or you can find someone in the USA who has bought from Hong Kong and want to change to 75MHz (like my friend might do, he bought the 40MHz version for some reason).

[kris lim]

how much effort is it to change the module, say i have a dsm in one car and pcm in other, can i swap the tx module and not lose any saved setups and just turn it on and im away with my other car? then swap back and away again?

[AreCee]

Once you receive your 3PK you'll see how rediculously easy it is to remove the module.

[kris lim]

my 3pk and dsm is here, sweet, i should put a plastic cap over the 3pk antenna hole to stop any dust going in there , i saw some where on the forum that you need to have the antenna up before you turn it on or there could be damage, is this right? i cant see it in the manual.

[kris lim]

cool, i see here i can turn the display on and change functions without turning the power on

[kris lim]

what did you guys use to fill the old antenna hole in?

[bsodmike]

What antenna hole are you on about? Are you taking about the gap between the antenna and the body?

[kris lim]

the 3pk tx antinna hole. now that i have the dsm fitted and don't need the standard hole and i think it should be covered, im sure ive seen someone talking about a proper bung?

[Juice]

Hey guys, I have been wanting a M8 for a while but recently seen this radio and really like the looks and features.

How many of you have used the M8 and came over to futaba? Just want some feedback on this radio with the spektrum!!

You see millions of peeps with there M8 too :confused:

No Im not a newbie by FAR--my current radio is a JRXS3

Thanks

[revodude14]

Yeah, I'd also like to know peoples idea of an m8 vs. 3pk

[bsodmike]

What is the max Tx battery charge rate thru the 3pk charger port (i.e. not directly to battery).

Can it do 9.6v @ 100mA, 200mA or 300mA safely?

Thanks.

[jeff_rancid]

Hi!
I have used a Airtronics M8 for 2 months and the radio is fantastic, faster response time than 3PJ PCM. My M8 broke and I´m planning to a 3PK PCM, but I´m afraid about the response speed time, a lot of pilots reclaim about slow response, but I don´t know if this is true. Does anybody know about this?
Numbers can help a lot ;-) PCM is better than PPM?

[juparave]

Hi to everybody, I just broke my 3PK trigger and I wonder if there's a replacement for sell and which is the trigger part number (if any).

Greetings

[cola]

Call futaba. I broke my 3pk screen, I called futaba and I bought and installed it. They will most likely be able to sell you one.


Thanks,
David

[juparave]

Thank you Cola, I'll call them next week. BTW how much did the screen cost you?

Greetings

[cola]

It was around $68.00 with shipping. It's still cheaper than me sending it in to be fixed.

[Cesarjjc]

Cola how hard it is to change the screem

[cola]

Its not that hard. But thaking the black piece off is a PAIN! If you take it off expect a few broken taps that hold it the the radio. You will also have to solder two tabs to a chip. there are also two other conectors but they just snap in. If you do it, go very slowly when taking the black case off so you have atleast three tabs left to hold it on.

[cowboyloco]

HI chaps !!
I've just bought a 3pK to use with my Revo and T-Maxx, an d my doubt is : Can I use the digital system and digital servos with the optidrive ???