[TenTec] Orion mic connections

[Duane A Calvin]

Torrey,
        Many microphones, including the Ten-Tec 706 require voltage to
power their preamp circuitry.  This is very common on radios from all the
manufacturers.

        73, Duane


On Mon, 19 Apr 2004 18:06:53 +0000 torreym at mchsi.com writes:
> Looking at the terminals of the Orion mic connector, there a 9 volt 
> connection 
> to one of them.  What's that for?
> 
> Torrey N9AUJ
> > 
> > Amen, the notion of ground referencing mic leads is
> > just plain silly.
> > 
> > Duane
> > N9DG
> > 
> > --- "Rob Atkinson, K5UJ" <k5uj at hotmail.com> wrote:
> > 
> > > 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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Duane Calvin, AC5AA
Austin, Texas