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@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@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
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