I have narrowed my choice of next radio to a Futaba 9C. I am going to get the Snth. module so I can choose my own channel. I am wondering if it makes any difference weather to buy the FM version or the PCM version?? I am going to be using my standard Futaba receivers with the TX. [8D]

Fastsky,
If you are going to use your existing receivers then the decision is already made for you. It will be more than likely that you will have to go with the FM version. The PCM radio requires that you use a Futaba PCM receiver. I'm going to take an educated guess that the current receivers you have are not PCM. If that is the case then you will need to get the FM version of the radio.

Ken

If the FM is working for you I would keep it. PCM does not reduce the interference it just keeps any rogue signals from controlling the airplane. If you are not getting "hit" with FM then PCM will have little extra value.

The 9C does both PPM (FM) and PCM. The only choice to make is whether you want to buy a PPM or PCM receiver with the transmitter.

That's not correct. The PCM version is selectable between PCM or PPM (FM) modulation.

I wonder if the 9CAF and 9CHF are actually on 8-channel radios... The 9th channel on my 9CAP is only available in PCM mode; and even then, it is limited in that it can only be assigned to a 2-position switch (On/Off).


***EDIT***
After doing a few minutes of research, the response immediately before mine is right, there's only one version of the radio, and it works in either PCM or PPM modulation.

I was getting ready to say....


The 9C is an 8 channel radio in PPM mode, in PCM mode you get the 9th but its only on/off you cant mix to or from it.

The only 2 differences between the F and P are as pkh said, the reciever that ships with the radio, and the default modulation for a new or reset model memory.

The 9C Super transmitter is designated as a 9CAPS or a 9CHPS, depending on whether you get the plane or heli version respectively. There is no such thing as a 9CAFS or 9CHFS transmitter. The 9CAPS and 9CAFS designations refer only to the TX/RX packages, which include a PCM or PPM receiver respectively. Both of these packages come with a TX with the 9CAPS designation.

Yes, the 6 channel and higher Futaba TXs are universal. You select via a menu if you want to transmit in FM (PPM) or PCM mode. After changing modes, be aware you have to turn the TX off then back on to effect the switch.

Ok, got it now. Thankx for the many responses. Makes it easy to understand what to order now. FM mode has worked fine for years so will stick with that. Only looking at computer radios now because of the lower prices, better features such as model naming and classy looks. And who can resist all those buttons, switches, and dials. [8D]

Fastsky,
I must admit that I am learning all the in's and out's of Futaba radios myself, so if I misquoted something I do apologize. Guess I need to go back to Bruce for more "Futaba Lessons"!!

Ken

Guys

Can you use a Jr or Hi-tec receiver with a Field Force 9 (FM) transmitter?

I flew with Ken a few weeks ago. He was green with envy looking at my 9C. I thought I heard him mutter"if only my 9303 would do that".
maybe it was the wind.


BTW if you buy the synth module as you said it will be PCM. I don't know if this would be cost effective for you. The only model you will be able to change channels on will be the one with the new RX. Save your money and get the FM. Down the road you will more than likely go 2.4Ghz anyway.

David

Ken,
I thought I told you that less than an hour ago.

Hey, remember that I'm an old artillery guy. You have to SPEAK UP when you say something to me!!!!

Ken

Dave,
Well, I have to admit that I will be a 9C owner as well. Don't worry, I'm keeping my 9303. I will be getting a 9C to do the review of the TF B-25.

Ken

Sweet talk the people at Tower. You may get them to sell you a 9CAFS system with a synthesizer instead of a standard module. It will work fine with either so I don't understand why they don't offer it both ways. You don't need a synthesized RX to work with a synthesized TX, in case you were wondering.

...and don't forget the "geek" factor.

The synth module just lets you dial in any channel you want on the 9C, you can still use PPM or PCM mode.

There has been some incorrect info posted in here on the 9 cap super....-pkh-'s posts are totally correct.

I will add that there is not a ppm soly nor a pcm soly version...and I know this was already stated, all 9 caps are selectable between ppm and pcm and will work on all your old fm receivers as well as new pcm receivers. You can have model 1 on ppm and model 2 through 18 on pcm without changing a thing . All you do is cycle the power switch once you have changed to the new model and that will switch the modulation from one to the other. This goes for the "P" or the "H" model. The synthesized module allows you to select any channel on the fly that tyou want as long as you use the correct channel in the RX. Thats the real beauty to this radio....I use PPM and PCM on different models, I have 5 different memory packs to hold all my models in (around 50) and if i purchase the 7 channel fasst 2.4 module that is a 2 second swap i can have 2.4 too! All this in one great radio package!
You can use from $19 dollar park fly gws rx's all the way up to the $170 Selectable PCM futaba receivers. with the standard 9 cap super and if you buy the 2.4 setup you will have the best of both worlds. You can even buy the Spektrum module and use Spektrum 2.4 rx's too!
Shayne

> "The synthesized module allows you to select any channel on the fly that tyou want as long as you use the correct channel in the RX. Thats the real beauty to this radio...." < That and the fact that I can lock in the correct direction of the servos is one of the main reasons for looking at this radio. The other thing is I can have a flap switch on the left side instead of the right to activate the flaps, something I can't do with my current 6 channel radios.

Stevie334, I believe that the 9C radios are shift selectable so they can fire up any 72 Mhz. reciever if you have the synthesizer but others might want to verify this. The 9Cap radio has so many features that they don't even try to list them all in a small ad. [8D]

http://manuals.hobbico.com/fut/9c-su...ies-manual.pdf
The 9C is NOT shift selectable. You need to go higher in the food chain to get that feature.

Also remember that in PCM mode they will only work with Futaba PCM RX's.

Bruce88123 is correct that The 9C is NOT Shift selectable...Not in any mode (PPM,PCM) nor 2.4 The 9C is always negative shift like Hitec. JR for example is posative shift. Like Bruce said....You can go up in higher end model radios that will change shift modes. I am not sure what models do and dont tho...but we are talking about the 9C