Thanks JF
I will order 2 kits as I have 2 K2s. I know that the VCO was sensitive to
AC hum when I placed my hand near T5 but I didn't realize it that
sensitive. Again many thanks and 73
Dave KD1NA
----- Original Message -----
From: "Jean-François Ménard" <[EMAIL PROTECTED]>
To: "Dave & Jeanne Robertson" <[EMAIL PROTECTED]>;
<[email protected]>
Sent: Wednesday, October 10, 2007 10:31 AM
Subject: RE : [Elecraft] Magnetic Fields
Hi,
Elecraft already have a mod kit for this kind of
behavior since 2005. The part number is : K2VCOSHLDKT
You can also take a look at the documentation provided
at :
http://www.elecraft.com/manual/K2%20VCO%20sheild%20mod%20rev%20E.pdf
Have a nice day.
JF VA2VYZ
--- Dave & Jeanne Robertson <[EMAIL PROTECTED]> a
écrit :
To All,
First to the good people at elecraft,
congratulations on shipping the K3s.
Second:
This may have been presented to the forum before but
I have not seen it.
Be careful with exposing your K2 to strong magnetic
fields, especially ones from power transformers.
I just finishing restoring an old Heathkit SB220
linear and in setting up the station placed the
linear to the left of the K2.
When I was using the linear I started to notice some
strange distortion in the received audio from the K2
and other stations commented on distortion on my
audio.
On CW all the received signals seem to have a
strange AC ripple on them. It was a very small
amount but still there. Stations receiving me also
reported a slight amount of ripple on my signal.
All this is while the linear was on but not
necessarily being used (I installed a Standby switch
in the SB220).
With the linear powered down, everything was
perfectly normal, both on received and transmitted
signals.
The power transformers in the SB220 are on the
linear's right side. This was the side the K2 was
located near.
I rearranged the station to have an antenna coupler
between the K2 and the SB220 linear, a spacing of
about 10 inches, and that totally solved the AC
ripple problem both on transmit and receive with the
linear powered up and on-line.
Just thought I would pass this on to everyone.
73
Dave KD1NA
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