[TenTec] Orion Jupiter mic connections

[Rob Atkinson, K5UJ]

>The microphone connections on both rigs are unbalanced ( mic + and -
Grnd).
>Now there is nothing wrong with this setup mfrs. have been doing this
forever.
That's exactly the problem.
It would be great if manufacturers built rigs with balanced XLR audio inputs 
and isolation transformers, and a separate PTT jack.  A lot of "RF in the 
audio" problems would vanish.  Balanced audio lines are much less 
susceptable to hum and RF pickup.  All decent baseband audio gear is 
designed to operate with balanced lines; professional audio and broadcast 
equipment are designed for them, for the aforementioned reasons.  But ham 
radio manufacturers seem to have stalled on the idea that everyone operates 
voice with a PTT hand mic, and coiled cord right into the rig, as if nothing 
has changed in the past 15 years or so.

Rob Atkinson
K5UJ

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