Old PCM "Airtronics Quantum"

by Jerry
(NY)

The rudder servo will not operate properly.The others are okay. Is this a receiver problem?

Can a new receiver be used with the system. If the crystal is swapped can a different (same make and model) receiver be used or is the existing receiver tied to the transmitter and only it will accept instruction?

Is there a new type receiver that will accept commands? The servos are airtronics and changing everything would be a problem.

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by: rcdude07

The rudder servo will not operate properly.The others are okay. Is this a receiver problem?


Have you plugged another servo in on the RX to check if your rudder servo went bad? Just swap aileron with rudder and do a test on the bench.

Have you verified the servo wire(s) are not damaged?




Can a new receiver be used with the system. If the crystal is swapped can a different (same make and model) receiver be used or is the existing receiver tied to the transmitter and only it will accept instruction?

If you get the same brand (Airtronics in your case) for 72MHz RX and put the crystal in to be on the same/correct channel, then yes. But if you get a different brand 72MHz RX, then you may have to reverse controls or plug in differently. Always best to stay with the same brand as your gear. Sadly it's harder to get Airtronics gear in the USA due to Global Hobby's decision to discontinue the brand in 2016 (press release here: http://www.modelairplanenews.com/airtronics-end-of-an-era/).


Is there a new type receiver that will accept commands? The servos are airtronics and changing everything would be a problem.

You are running 72MHz, you need an Airtronics 72MHz RX.

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