[AMRadio] BC-610

[Warren Elly]

Pro40 heil with audio chain homebrew speech amp

Used to use d104 and worked fine

73 warren




On Nov 22, 2011, at 8:46 AM, "Rick" <rickb at tx.rr.com> wrote:

> Thanks, Warren. What kind of microphone do you use with your BC-610-I? Are
> you using a BC-614 speech amp? I am about 4' or 5' away from the transmitter
> and if I attempt to get close to 100% modulation using a D-104 and any one
> of the BC-614 speech amps I get so much talk back it will squeal. Hopefully,
> the suggestion of using the transmitter for an hour or so then disconnecting
> and using a 50/50 concoction of marine varnish and water to reseal the
> laminates along with using new stainless hardware tightened very well will
> eliminate the problem.
> 73,
> Rick
> 
> 
> My I Model sealed mod tranny has "talked back" from day one (five years on
> air), reminds me of the
> broadcast boxes I was around as a 3dclass endorsed kid reading meters in the
> 60ies...
> 
> My beast sits 6 feet behind my operating postion...but I've operated sitting
> in front of it as well, and never found the talk back to be a problem...
> 
> 73, and AM,
> 
> Warren W1GUD
> Florida AM Group
> 3675 Sun 7am East
> 
> 
> 
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