wolf16731

iTrader: (9)

So, I have an Associated XP3D 27MHZ FM radio. I loved the thing in my HPI Blitz and wanted to convert over my Hyper 7 and my Savage over to use the same radio. I picked up some receivers, a JR R200 and another one that I don't quite know the model of. Both receivers are in the 27MHZ FM band. Here is the picture of it:



But here is the question. Is there some kind of compatibility issues that I don't know about? Both of these receivers glitch like no other. I can't figure it out, I've tried all sorts of crystals and things like that. I figure if it comes to the worst and these receivers truly aren't compatible, I can always sell them to try and get my money back on it. Any help is appreciated.

Duster_360

iTrader: (21)

Are you trying with a set of matched crystals - I mean the TX and RX crystals made by the same company? I have had no luck 'mixing' crystals, but have always been able to run a mixed Tx and rcvr pair in 75Mhz FM when I use a matching set of crystals.


Its 75Mhz that has the phase shift differences, thats not supposed to be an issue in 27Mhz.

wolf16731

iTrader: (9)

At first I tried with "matched" crystals, but I was getting glitching, same story when I mixed them. I am at a loss here. The JR R200 receiver doesn't glitch anymore last I tried, but the "throttle" channel doesn't seem to respond at all. The steering works fine, just not throttle.

Duster_360

iTrader: (21)

That makes it sound like you've got the plugin the rcvr in backwards on the JR rcvr......

wolf16731

iTrader: (9)

I thought I tried that too. I was tired yesterday when I was doing it so maybe I was doing it wrong. I'll give that another try today. Hopefully that is what it is, I really don't want to get any more receivers, haha.

Duster_360

iTrader: (21)

Usually rcvrs have the negative side of the plug toward the 'outside' of the case.