[TenTec] C-21

[N4PY2]

There was a pot on the bottom of the C21 you access through a hole in the 
bottom.  This was for sidetone volume.  I just can't remember if there were 
2 pots with one also being for pitch.  The original Omni series had 2 pots 
on the bottom.

Carl Moreschi N4PY
121 Little Bell Mountain Drive
Hays, NC 28635
www.n4py.com


----- Original Message ----- 
From: "George Allgood" <myp4k69 at bellsouth.net>
To: <TenTec at contesting.com>
Sent: Friday, August 21, 2009 2:52 PM
Subject: [TenTec] C-21


>
> Recently, I found a Century 21 and let it "follow me home".
> Rebuilt the PTO and cleaned her up a bit and now, she's working like a 
> charm.
> I'd like to change the frequency of the sidetone.  The sidetone is plenty 
> loud enough,
> but the pitch is a bit low.   The tone is generated from an IC on the 
> pre-amp board.
> Has anyone done this?
>
> Thanks
>
> George, W4GFA
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