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Old 02-11-2004 | 01:55 PM
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GrayUK
 
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From: Dunstable, UNITED KINGDOM
Default RE: Jet radio modulation

This thread referenced Jet pilots, not others. Mick may fly PPM i do not know, but Mick is also regularly crashing Jets. I don't know that it is the radio to blame, but it does happen.

I still disagree with the statment that PCM would be the same as PPM if it had no failsafe. PCM does not pass errors to the servo's, this happens continually and before failsafe engages. So if it had no failsafe surely what would happen was that the last good frame would hold the servo's in the last good position. This is not the case with standard PPM, crap gets through to the servo's and cause the plane to 'go all over the place'.
If you leave a PCM rx turned on at the field without turning your TX on (to upload failsafe data), provided no one is on your frequency it will sit quiet. Do the same with a PPM, it will buss and flick about, just from picking up spurious signals, or splatter from other TX's. I can not comment on your 'new' system as i have not seen it in action but as i say, PCM works well for me!