, February 22, 2009 4:40 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Strange behavior when tuning around with SUB receiver
LINKED
Dear group,
Someone please explain to me what's happening with my K3. I have both main
receiver and sub receiver linked. This way, I can tune the sub
Dear group,
Someone please explain to me what's happening with my K3. I have both main
receiver and sub receiver linked. This way, I can tune the sub receiver
with the main VFO knob. However, there's something weird going on when I
cross some sort of band edge.
For example, if both VFO
Another thing I noticed that when near the 5Mhz band, other knobs like the
filter knobs will also induce this motorboat noise when turned. Any
suggestions on how to fix?
73,
James KC2UEE
Also, and possibly another more concerning issue is that when the sub
receiver is on, and I'm tuning
James,
What rev of firmware are you using? I went through test on all of
them I could with the subreceiver, which I didn't install until 2.72
was current. I can't duplicate your results with 2.82. It may not be
a firmware-related issue (or issues).
In the first problem statement, it sounds
My K3 does this sort of unexpected leap to next band up/down at tuning
breaks with linked or unlinked main/sub. I assumed this was because I
had the general coverage filter in the main but not the sub. Firmware 2.82.
No 'zipper' noise here except that little bit at the bottom end of 6m.
73
James,
I, too, have noticed what I believe you are noticing. It seems to me
that the jumps in the tracking of VFO A and VFO B occur at the
transitions of the bandpass filters. It is as if when the bandpass
relays switch, the VFOs lose their synchronization. (Of course, I
could be wrong,
Looks like I may not be sticking to my explanation after all. Try
this and see what you get:
WITHOUT the SUB Receiver linked, tune the main receiver to 6.000.000
MHz. Be sure you can see the frequency of the Sub Receiver on VFO B
area and the tuning rate is FINE.
Push AB twice to
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