Re: K1 Audio Problem after fitting KNB1 Noise Blanker
Posted by
Ray G3XLG on
Jan 11, 2012; 10:11am
URL: http://elecraft.85.s1.nabble.com/K1-Audio-Problem-after-fitting-KNB1-Noise-Blanker-tp7172988p7175682.html
Thank you Don & Mike for your suggestions!
Yes, I had somehow accidentally moved S2 into the TEST position when removing C2.
Putting it back into the OPER position cured the problem
I feel a bit of a fool but thanks both for helping out
73
Ray, G3XLG
-----Original Message-----
From: Mike Morrow [mailto:
[hidden email]]
Sent: 11 January 2012 02:11
To: Ray Spreadbury;
[hidden email]
Cc:
[hidden email]
Subject: Re: [Elecraft] K1 Audio Problem after fitting KNB1 Noise Blanker
Ray wrote:
> The "whine" is a steady continuous tone (perhaps at 800 or 900 cycles), not
> popping, nor a low pitched oscillation and in fact I wondered if the
> sidetone spot was on or if the key was down.
Have you checked that the small slide switch S2 for for the OFFSET TEST adjustment
(on bottom of the RF board) didn't get inadvertently placed in the TEST position
rather than the OPER position?
I'd check that before anything else.
73,
Mike / KK5F
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Ray G3XLG