I have a 9ZAP transmitter, and I am a bit confused over which transmit modules are acceptable for use, and why some others are not. My 9Z has a FP-TP-FM module installed, and although the info on the Futaba web site suggests that the "TP" module is not to be used with the 9Z...It seems to be working just fine. What am I missing here? The info on the web site is typically quite brief, and I always like to know all the whys, and why nots, in these situations. Also, I would like to know about interchangeability so I'll know just exactly which modules I may also use in my 9CAP Tx. Thank you for your help in explaining the differences between module types, and clarifying this most perplexing problem.
Jim

Hi Capt Jim,

The Futaba 9Z transmitter uses the TK transmitter module. The 7U, 8U, and 9C series transmitters us the TP modules. The TP module is not designed at all to work with the 9Z transmitter, and is not certified for use with the 9Z transmitter, which makes it illegal to use a TP module in the 9Z.

You CAN use a TK module in the 7U, 8U, and 9C transmitters with no problems, though.

If you use a TP module in your 9Z transmitter, its life will be limited, and the warranty won't apply.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)

Do USA specs apply to UK on 35meg ?

We do not have a dedicated Uk web site with Futaba support.

Hi Krysta, and thank you for shedding additional light on this subject of modules. You mention two interesting points that I'd like for you to expand upon.
(1) The TP module not being CERTIFIED by the FCC for use in the 9Z
(2) The life expectancy being lessend when used in the 9Z
I understand that FCC certification is a messy, long drawn out process, and has a high cost associated with it. Futaba, having done certification with the TK module would probably be reluctant to submit to the additional cost, etc. I would tempted to accept that this certification issue may be the only real deterrant to its use in the 9Z, at least in the USA. But what about in Europe, etc?
As for limited life expectancy...warranty issues aside, please define for us just exactly what the electronic parameters are that would cause such a life shortening condition.
Additionally, perhaps it would be of great benefit to show us what specific differences exist between the TP and the TK modules. Again I mention that I have a TP module in my 9Z right now, and it seems to be quite happy. I did not intentionally make that modification, but rather it came to me that way from a purchase online. The previous owner says it has been flying an expensive aircraft with this configuration for quite some time. This pre WC2 9Z is at least several years old.
As always, thank you for your efforts on behalf of the r/c community, and please do continue to extend your support to us.
sincerely,
Jim

Capt Jim,

Give me a few days to get some official data for you and as soon as I do, I will post it here as quickly as I can.

Thanks for you patience, Krysta

Thanks Krysta, you're the greatest. We'll be watching for the news.
Jim

Hi Capt Jim,

Sorry it took me so long to get back with you, I have been out for the last few days....

Okay, here's the information that I received. I know it is probably not as technical as you would have liked, but it does explain the major problem with trying to us the TP module in the 9Z. And this seems to be true for all frequencies "neilbushell". I hope it helps you both out a little.

"In most cases when using the TP module in a 9Z the power output will be less
as compared to the TK module. This means in some situations the range may
not be adequate. This is true on any frequency band. 35, 40, 50, and 72MHz."

Thanks for your patience, Krysta

Thanx Krysta, Good info to be aware of. I hope your absence was fun days, not sick days. As for the modules, when used in the 9C, can we assume that the power output is the same..or would it be preferable to use one over the other in the 9C?
Many thanks for your efforts.
Jim

Krysta,
You have partially answered some of my questions with your responses to Capt Jim. Here are the rest.
I have been using TP modules in my four 9VAP TX's for years(with no knowledge of the need for TK modules) with excellent results. These radio's have been used for control of some very expensive war birds and other large RC aircraft. I have not experienced any lack of range even on long low passes or landing approaches. I really need a better technical answer than you have provided.
I have been thinking of getting a new 9ZA but now I may have to reconsider. I own 7 TP modules and 2 TK that Iwant to use. From your reply, I should only use the TK. This really limits my options. It almost makes me want to turn to the dark side (JR).