[Elecraft] K3 Tune carrier with hum

[Steve Ellington]

Uli:
I suggest having a local ham station listen to your signal instead of using 
an independent receiver. Common mode hum can play tricks on you.
N4LQ Steve
N4LQ at carolina.rr.com
----- Original Message ----- 
From: "Ulrich Quandt" <ulrich.quandt at online.de>
To: <Elecraft at mailman.qth.net>
Sent: Sunday, April 26, 2009 1:36 PM
Subject: [Elecraft] K3 Tune carrier with hum


> Hi,
>
> on my K3 the tune carrier is modulated by a hum noise. If i press the tune
> button i can hear this noise with an independent receiver.
> It has nothing to do with my power supply and the problem appears between 
> 1
> to 100 watts.
> It seems that the noise is generated inside the K3.
>
> I have this noise only during tune, all other transmitting works flawless.
>
> Any idea ?
>
> 73 de Uli (DL4YCM)
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