Rebuilding your transmitter with the Jeti Duplex system.
This is available for the Robbe F-14, FC-16, FC-18, FC-28 transmitters.
Transmitter will be programmed for use with the multiswitch / prop modules.
(FC-28 The antenne will be mounted on the case itself. For a mount on the original place you need an adapter also available in the shop).
All the other transmitters will have the antenne mounted on either the original place or next to it.
No receiver included, mostly used is the 9 channel receiver:
Jeti Duplex R9 Receiver