[AMRadio] HQ129X 3rd IF

[wb3fau at att.net]

i  guess you  could wire the  extra jack for another  function? Recorder 
output?  Better  than the hole.  Try  my HQ-170- 2  extra holes  and I got no clue  what for?  Russ.

--- On Fri, 12/23/11, CL in NC <mjcal77 at yahoo.com> wrote:

> From: CL in NC <mjcal77 at yahoo.com>
> Subject: [AMRadio] HQ129X 3rd IF
> To: "AM radio" <amradio at mailman.qth.net>
> Date: Friday, December 23, 2011, 9:51 AM
> Well, somebody was ambitious with
> mods in this 129X.  The industrious fellow copied most
> of the first IF's circuitry into the third IF, and also
> installed a ring-tip-sleeve jack on the front panel to
> operate a mute circuit by lifting the ground connection of
> the 100ohm resistor from the gain control.  It's all
> back to schematic normal now, but still have a hole in the
> front panel.
> 
> Charlie in NC
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