I have been asked for a diagram for the Futaba FG series pin-outs to fit a FrSky hack module. In the ones I have done, I have squeezed the hack module into the Futaba module case after first removing the old innards. The old connector can be soldered to the shortened hack module wires (the ppm wire terminates in a DIODE, remember to re-attach the diode to the ppm wire if you use this method) and then glued in position to connect to the Tx pins. The antenna can be fitted to suit your preference. On some I have used a plaxolin square to mount the antenna in place of the Futaba fitment. The diagram will appear in .pdf format.
Futaba FG Gold FrSky Hack Pinout Diagram
I have sold all my Futaba gear since doing the conversions and have gone back to JR, this means that I cannot now show pictures of the conversion. I have nothing against Futaba equipment, it is fine gear, I just could not get used to the different systems and returned to a familiar programming ethos.
The antenna pin in the Futaba Tx has a wire going to the antenna stub in the case. This can be removed. I cut mine off because I was not interested in keeping the original attachment.
If you already have your FrSky hack module then you will see that it is encased in a heat-shrink like tube. If you carefully snip the heat-shrink, following the antenna cable to the terminal on the PCB, you will find the antenna cable has a standard micro connector. This is the same as the connector on other makes of 2.4 equipment. When I converted my JR 3810 ADT (on the blog) I used a Spektrum DX7 antenna, threading the cable through the Tx and into the module.
The only difficulty that you may encounter is finding a convenient site for the three position switch if you use the Telemetry Hack Module.
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