I had a warbly sidetone when RF got into the key jack of the rig. In my
case, the RF was getting into my keyer, then to the rig. In one case
(Hallicrafters HA-4) the keyer output was a transistor. RF would prevent
the transistor from conducting fully and that would make a warble.
73, Mike N4NT
----- Original Message -----
From: "Stew" <radio52@sbcglobal.net>
To: <TenTec@contesting.com>
Sent: Saturday, April 26, 2008 7:02 PM
Subject: [TenTec] Century 21 problem
> Just recently I've notice that when I put a "Load" by increasing the power
> output of the transceiver the tone of the cw becomes warrbly. It sounds
> like
> a power supply problem but not sure where to look to correct this . Anyone
> else have or had this problem.?
> Thanks
> Stew
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