Dual RF section for failsafe system

[Wetafly]

Hello All

Does anyone have any info on piggybacking an RF section onto a transmitter for a dual frequency system. I have a SM services RX buddy for the dual RX failsafe.

Regards Rod Ford

[Acetronics]

Hi, Wetafly
I' ve already seen something serious ( ! ) like that, made by a small electronics company in France.
Can directly replace the HF part of the transmitter ...
just a moment, I dig out the paper ...

Alain

[Acetronics]

Hi, Wetafly

I Endly found it ... ;)

The creator, M. Nicollet sold his company to ACT Germany ( Health problems ... )

http://www.acteurope.de/html/2-frequenzmodul.html

Alain

[Wetafly]

Hi Alain

Thanks very much for the link, I will seriously consider this for the future.
I have gone with the SM systems dual Reciever system and am piggybacking a second transmitter module onto the transmitter. One is on 40 mghz and the other on 72 so I have a very wide frequency split.
Here is the project and it is nearing flight, so far tests are promising and I have quite a few hours of ground running.
The heli weighs 45kg and is powered by a ZDZ 120.

Regards Rod Ford

[Acetronics]

Wow ... :eek:

that's the biggest heli I ever heard of ...

I remember one thing about twin bands HF Heads ( 40 and 72 ) ... you have to use two separate Tx antennas ...

I saw that on a very old paper ( 30 Yrs ??? ) from one of our " Model genii " col. Francis Plessier ...

Alain

[Wetafly]

Hi Alain
Yes I will use 2 antenae at 90 degrees orientation to one another.

Rod

Ps the pod on the front is for a 35 mm movie camera.