Eric,
Re "Also, if you have an extra BNC-BNC cable, try
replacing this cable.": Really! Yesterday I was
testing a newly received mag mount to make sure
this (MFJ!) product was OK. Connected a dummy load
to it via a BNC-BNC connector and VSWR was not
flat and impedance varied significantly with
frequency. Changed dummy load: Same result.
As it turns out the problem was in the BNC-BNC
cable, not the device I was testing. Verified by
mounting one of the Elecraft dummy loads direct to
the mag mount, then via a different cable which
was OK.
BTW -- the BNC-BNC mag mount is for use with the
MFJ 18XX-T whips, so I can mount them remote from
my KX2/3 vs. always on the rig with rt angle BNC
adapter. Seems like a good option to have, since
I have two of the whips (20 and 40)!
73, Phil W7OX
On 6/9/16 8:45 AM, Eric Swartz - WA6HHQ, Elecraft
wrote:
Check the connections on the BNC cable between
your K3 and P3 and re-seat them. Also, if you
have an extra BNC-BNC cable, try replacing this
cable.
Also, if this BNC is run near switching power
supplies etc. it can pick up noise like this.
73,
Eric
/elecraft.com/
On 6/8/2016 7:22 AM, Sam Morgan wrote:
I have a 8-9 khz wide signal that follows my
VFO A around. I saw this on 160m and also in
10m this morning. I haven't checked the other
bands.
Images can be seen here:
https://picasaweb.google.com/k5oai.sam/6293813435183959297
No antenna was connected to the K3. The only
cables connected to the P3 were: Coax and RS232
from K3. I attached the RS232 to the computer
to get the snap shots, bet the signal did not
change with it connected to the computer or not.
Note: During the snapshots I bumped the VFO
knob from 28.120 to 28.119.40 by mistake during
the snapshots, but that doesn't have any effect
on the fact there is this big wide scary 8-9khz
wide signal ~ 30 khz down from VFO A that is
tracking my main VFO.
What is going on, has my K-Line been invaded by
something? If so what and how do I fix it?
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