PIXHAWK with TX/RX in FM 35Mhz

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Hi All, I’ve recently bought a DJI F330 platform with Pixhawk + GPS and I’m actually in the configuration phase of the Pixhawk. Waiting in a new 2.4Ghz RC equipment, I want to use an old Graupner (JR) MX-12 + rx R700 in FM 35Mhz to configure the Pixhawk and make the first test flights…As this tx/rx works in PPM or PWM I thought that it would work properly but it’s not really the case. I wonder if it’s not a connexion problem between the Pixhawk and the rx. The 3DR docs explains that I have to connect the RC port of the Pixhawk to the rx but it doesn’t say where on the rx…I’ve 8 ports on the rx (7 for servos and 1 for batt/servo (webx.dk/rc/RX-measurements/G … erR700.htm), I’ve connected the RC port of the Pixhawk to the batt/servo port of the rx and the rx is powered and if I connect a servo to one of the ports of the rx it’s working fine, but when I connect the servo to the Pixhawk (1 to 8) I have no result. I’ve tried with the PPM encoder and working but I would like to avoid the usage of PPM encoder as this equipment works in PPM…Any Ideas??

Thanks!

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Obviously to the PPM-out.

Because you have to connect the Pixhawk to the PPM-out. If your RX doesn’t have a PPM-out, you cannot use it without the PPM encoder.

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This must be the reason, the PPM out that this rx doesn’t have, it was not obvious to me, now it is…good that I opted for the PPM encoder when I purchased the Pixhawk!
Thanks a lot for the clarification;-)