case is
on 28 MHZ where it is 260 Hz.
Do you have any ideas Don?
73, Igor UA9CDC
- Original Message -
From: Don Wilhelm w3...@embarqmail.com
To: Igor Sokolov ua9...@gmail.com
Cc: Elecraft Reflector elecraft@mailman.qth.net
Sent: Monday, April 23, 2012 11:48 PM
Subject: Re: [Elecraft] K2
Reflectorelecraft@mailman.qth.net
Sent: Monday, April 23, 2012 11:48 PM
Subject: Re: [Elecraft] K2 intermittent problem
Igor,
What mode? How are you determining that the TX and RX frequencies are
different?
There should be no difference in SSB, and in CW the difference should be
equal
Message -
From: Don Wilhelm w3...@embarqmail.com
To: Igor Sokolov ua9...@gmail.com
Cc: Elecraft Reflector elecraft@mailman.qth.net
Sent: Sunday, April 08, 2012 7:26 PM
Subject: Re: [Elecraft] K2 intermittent problem
Igor,
An intermittent problem of that nature is usually associated with a bad
Igor,
What mode? How are you determining that the TX and RX frequencies are
different?
There should be no difference in SSB, and in CW the difference should be
equal to the sidetone pitch.
73,
Don W3FPR
On 4/23/2012 1:23 PM, Igor Sokolov wrote:
The problem was finally tracked down to
Igor,
After giving your question some thought - I would suggest making another
attempt with the K2 set to receive on the FL1 filter (the same filter as
used for transmit).
If you still have the shift between TX and RX, the problem is most
likely in the way the the sidetone shift offset is
Just discovered that knocking RF board in the region of the K14 and K15
relays makes the problem to appear or disappear. The offset does not depend
on the CW pitch setting and is close to 1 khz.
__
My K2 developed a problem. In CW mode TX
Igor,
When the problem appears, is the offset always the same plus minus say 5 Hz?
Also, did you try knocking the RF board in the region of the PLL reference
oscillator's crystal X1?
73,
Geoff
LX2AO
On April 08, 2012 at 10:28 +0200, Igor Sokolov wrote:
Just discovered that knocking RF
Igor,
An intermittent problem of that nature is usually associated with a bad
solder connection.
Reflow the soldering (adding a little bit of flux from new solder) with
a hot (400 degC) iron.
73,
Don W3FPR
On 4/8/2012 4:28 AM, Igor Sokolov wrote:
Just discovered that knocking RF board in the
My K2 developed a problem. In CW mode TX frequency is off the RX frequency
by about 1 kHz. The problem is intermittent. Sometimes it manifests itself,
sometimes it does not.
Can anybody give me a hint where to look? I was about to see if changing CW
pitch changes the offset but so far cannot make
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