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JR (Heli Version) XP8103 modification

Old 11-04-2021, 10:27 AM
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Default JR (Heli Version) XP8103 modification

Guys, I have 2 JR XP8103 heli version systems that I use strictly for aircraft. I am currently considering buying the Freewing F 14 Tomcat that requires a min of 7 channels. I would like to use the 8th channel for turning on and off a added Gyro and I would like to use the Aux 3 Channel for this purpose. However, I don't like the knob /pot control on that channel. I would like to convert that channel to a 2 position switch. While I am experienced in electronics, I am not familiar with the circuitry used and am not sure if I can just utilize the black common and one-or-the-other of the two signal wires on the pot and not use the third wire. I certainly don't want to affect the transmitter in any other way. Has anyone out there attempted this slight modification to this or any other RC transmitter? (BTW, people have got to wonder why a guy would have 2 Heli version transmitters and be using them strictly for aircraft. When I bought them "used" years ago I was not into more than 4-5 channel airplanes and didn't realize that they were H versions!!!! By the time that I really got into more advanced set up etc, I was too deep into JR receivers and equipment! ) :-)

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Old 11-04-2021, 01:47 PM
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FCC regulations prohibit anyone who is not a licensed technician, with the required equipment to test a completed repair, from working on or modifying a radio transmitting device.
Old 11-05-2021, 04:26 AM
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IIRC as long as the transmitter section is isolated from the rest of the circuits you can work on those that are not transmitter specific, such as what the OP is asking to do.

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