PCM reciever..? - RCCanada - Canada Radio Controlled Hobby Forum
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Old 09-27-2005, 09:43 AM   #1
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PCM reciever..?

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I'm using a JR radio (XP8103), and I seem to have glitches on some of my models. It doesn't happen all the time, just some times. I've always used an FM modulation, but was wondering if a PCM reciever will work with my system, and if I have to buy special servos or anything to work with the PCM reciver?

I see an advertisement in RCM for a R770 reciever and it says "good-bye glitches", so this got me thinking, maybe this would help my glitch problems...!

Kelly Andersen

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Old 09-27-2005, 09:55 AM   #2
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No, you don't need any special equipment to switch to PCM, simply buy the compatible PCM receiver and change your transmitter setting to PCM.

You shouldn't do this to address a glitching situation though. Although the PCM receiver will stop the glitching, it's simply maksing it and, the glitches may continue to get worse until they force your receiver into fail-safe.

I do recommend PCM receivers, just not for this. You need to try to isolate the glitch.
Try swapping the components out one at a time, start with the switch. Try a different ppm Rx to see if the problem is with the receiver, if not, start looking for a cause. Maybe a bad lead or connection, a bad servo (isolate by disconnecting all servos and reconnecting until the glitch returns). Maybe it's a metal vibration like a cracked header, maybe it's a leaky ignition....

Best of luck!

Does your
MAAC# 12719
Si fractum non sit, noli id reficere - (If it ain't broke, don't fix it).
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Old 09-27-2005, 10:28 AM   #3
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As Jim says, check everything, connectors, switches etc.
I had a glitch last Sunday, and I couldn't find the problem, so I packed up and went home.
Finally, I removed my cowl, and fould the muffler had come loose.
The problem is not always obvious, but keep looking and you will find it.
Ron Mattiuz

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"Flying an airplane is just like riding a bike...except it's harder to put cards in the spokes"
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Old 09-29-2005, 11:47 AM   #4
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I agree.

While it may be a major pain for you to find the cause right now, it is the correct action to take.
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