[TenTec] Century 21 audio hum

Josh Gibbs gibbsjj at gmail.com
Tue May 30 17:34:15 EDT 2017

Hi Howie,

I opened up the plug on my phones (housing unscrews on this one, other
plugs might not), unsoldered the wire that was connected to the 'tip'
terminal, and put the resistor between that tip terminal and the wire that
I unsoldered.

I just used some test leads to clip in different value resistors when I was
figuring out the best resistor value.

Is your C21 the Digital or Analog version? How many Ohms are your
headphones? You don't hear any loud humming with the phones plugged in and
the audio turned down all the way?

-Josh WA7FPV

On Tue, May 30, 2017 at 2:03 PM, Howie WA3MCK <wa3mck at gmail.com> wrote:

> Hi Jim,
> I don't have any noticeable hum on my C21. I however the swamping resistor
> is a good idea. If I may ask - how and where did you install it?
> Howie WA3MCK

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