Doug,
Well, stuff like that happens to all of us at one time or another. When
it happens to me, I just jot down a Dear Dummy note to myself and go
on with life. Glad to hear you found it.
73,
Don W3FPR
Doug Heacock wrote:
Boy, is my face red. For the benefit of those who helped with
PROTECTED]
Sent: Thursday, August 02, 2007 1:14 PM
Subject: Re: [Elecraft] K2 SSB Problem
Hi Don,
I have found three resistors with a wrong value (R7, R9 and R4). I installed
the resistors with the correct values but the problem is always present.
The current increase step by step until it does
15:19:50 -0400
Subject : Re: [Elecraft] K2 SSB Problem
Have you removed C167 from the RF Board?
If you have removed it, there may be a problem with the ALC circuits on
the KSB2 - check D1, D2 - look at the schematic and identify the
components associated with Q1 and be certain all have
Fabio,
I cannot be specific, but the most probable area causing that trouble is
the area of Q2 and Q3 (those direct the BFO signal either to the
balanced modulator in SSB mode or back to the RF board for CW) or the
balanced modulator U5.
Check carefully to be certain diodes D5, D4 and D3
de IZ1DUG Fabio
-- Initial Header ---
From : Don Wilhelm [EMAIL PROTECTED]
To : [EMAIL PROTECTED] [EMAIL PROTECTED]
Cc : elecraft elecraft@mailman.qth.net
Date : Sat, 28 Jul 2007 08:17:10 -0400
Subject : Re: [Elecraft] K2 SSB Problem
Fabio,
I
Gerhard,
There could be a problem, or there may be no problem at all. What is the
audio source and level that you are driving into the mic jack? If it is
not a pure sine wave or the level is too high, it will have harmonics or (if
too high a level) can cause harmonics if the balanced modulator
Hi Gerhard,
Most reports of FM'ing I have been aware of have been due to a low
power supply voltage and/or the voltage varying with the load. I have
not heard a K2 with this problem, but it might be worth checking the
power supply.
gl
Trev G3ZYY
In message [EMAIL PROTECTED], Gerhard
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