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Converting Futaba FP-T4H 27mHz Transmitter to 2.4GhZ

PostPosted: Sun Oct 09, 2011 2:17 pm
by mpsaju
Dear Guys

Could anybody advice me on how to convert FP-T4H 27mHz Futaba Transmitter to 2.4GHz. I have converted other stuff like Futaba Conquest, Futaba T6EXAP to Assan Hack module X8D quite succesfully, but I am stumped here as I am not able to locate the PPM signal. This is a 4 Channel system.

Awaiting help eagerly. There must be some bloke who would have done this I am sure.

Thanx in advance

M.P.Saju

Re: Converting Futaba FP-T4H 27mHz Transmitter to 2.4GhZ

PostPosted: Sun Oct 09, 2011 11:08 pm
by quarry44
Have a look at this thread,it may be of some help:
viewtopic.php?f=44&t=1140

Re: Converting Futaba FP-T4H 27mHz Transmitter to 2.4GhZ

PostPosted: Mon Oct 10, 2011 3:09 pm
by mpsaju
Guys
This one does not have a trainer port. It is one of those old old ones... May be it is a PCM based system. I am not able to get any info on this. If it is PCM, I would like to have help in converting this to PPM.

Thanx

M.P.saju

Re: Converting Futaba FP-T4H 27mHz Transmitter to 2.4GhZ

PostPosted: Mon Oct 10, 2011 9:31 pm
by quarry44
It's unlikely to be pcm.You need to find the big IC on the main circuitboard and see what numbers are on it.If it's a 5044,ppm will be on pin 10 or11.

Re: Converting Futaba FP-T4H 27mHz Transmitter to 2.4GhZ

PostPosted: Tue Oct 11, 2011 2:26 am
by ergocentric
I looked, and if it is this radio: manuals.hobbico.com/fut/t4-t5-manual.pdf (edit: this radio was made before Futaba even had coherent, spell-checked manuals)

you are much better off buying a Hobby King brand four or six channel radio with loads of mods online: http://www.rcgroups.com/forums/showthread.php?t=967207

UNLESS you are doing this because you like the vintage look and you are an electronics hobbyist, in which case the other guides should cover it.

Re: Converting Futaba FP-T4H 27mHz Transmitter to 2.4GhZ

PostPosted: Mon Oct 17, 2011 1:12 am
by mpsaju
Is it possible to built the ppm signal in... meaning I use the pots and the mechanical systems, but change the heart to a ppm encoder of my own and connect to the ASSAN X8D hack. DO you know of any good simple ppm encoder which can be built ?

M.P.Saju

Re: Converting Futaba FP-T4H 27mHz Transmitter to 2.4GhZ

PostPosted: Mon Oct 17, 2011 3:50 am
by ergocentric
Signetics NE5044 if you can find it is the one chip solution

Otherwise hunt around with google, there were a couple of PPM projects for microcontrollers