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Old Feb 12, 2010, 04:34 AM
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rs 70 v rs 77s

Am using a Multiplex Cockpit radio with a jr rs70 rx, and have just aquired a jr 77s rx. Have read the first is analogue(ppm) and the second is digital(pcm) Does that mean that I can't use it?
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Old Feb 12, 2010, 06:23 AM
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gouch's Avatar
Lake Macquarie, Aust.
Joined Dec 2002
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yep. pcm and ppm together does not make a working combo.....unless your multicrash radio has some switching in it to change, never heard of it before though
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Old Feb 12, 2010, 06:25 AM
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Cool...thanks. Looks like I put it 4 sale in that thread.
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Old Feb 12, 2010, 09:40 PM
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Australia, VIC, Spotswood
Joined Sep 2007
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jr computer radio,s are ppm and both pcms/pcmz
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Old Feb 13, 2010, 01:38 AM
Never too much detail
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Australia, VIC, Hampton
Joined Jan 2007
477 Posts
Don't assume they all support both zpcm and spcm. I purchased a JR 2720 some time ago assuming it would support both since the US version did. The Australian version only supports ppm and spcm not zpcm.
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Old Feb 13, 2010, 04:07 AM
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Australia, NSW, Yass
Joined Dec 2007
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PCM gives you some FailSafe options too.
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