FrSky V8HT into futaba 3GR

[feasty33]

Hi,

Am fitting the above into my 40meg 3GR and just had a quick question regarding the internal wiring.

I understand the wiring required (pos, neg & ppm) but am unsure about disconnecting the original 40meg transmitter board.
You see, mine is a fully synthesised version with no xtal to leave out!
I'm worried that if I leave it connected it will still try to transmit on 40meg, albeit without its aerial.

Should I disconnect one of the wires (or all 3) from the 40meg board so it can't transmit, or not worry?

Many thanks in advance!
Dave

[rsj]

I hacked my 6exa and removed the transmitter board all together then connected the wires to the 2.4.
If your not going to or can't remove it then I would disconnect it so that it it doesn't drain power from your batteries, or poss cause any probs with 2.4... don't know if it could? You can use the plugs from servo extensions if you want to be able to swap from 2.4 to 40 at any point.

[feasty33]

I was thinking of removing it altogether but there are a lot of wires going to it!
I guess that this is to do with it being synthesised rather than xtal based.
Also, I take it that the wire marked PPM/HRC is going to be the PPM wire that I need? Stupid question I know, but you never can tell!!!

Dave

[Cardnim]

Hey Dave,

Not 100% sure if that PPM/HRC wire is the PPM one, but it certainly sounds right! lol.
Only way to be super sure though is to stick it on an osciliscope to watch the pulse modulations as you operate the transmitter.

Failing that, stick it on a voltmeter, delicate settings, and register the voltage spikes.

[Cardnim]

Just threw together a bit of a how to...
http://www.oople.com/forums/showthre...738#post628738

HTH

[feasty33]

Cardnim,

Thanks for the link, good info there!

What are your thoughts on disconnecting or just splicing into the original wiring on my 3GR??

Dave