You K3 guys are great! Thanks for the quick responses.
I had not set all of the FL1 positions to OFF during the filter setup
activity.
It pays to read carefully, and then re-read, some of those instructions.
The Width function now operates as I was expecting.
73,
Henry - K4TMC
K3 #98
-----Original Message-----
From: [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Mon, 10 Dec 2007 6:06 pm
Subject: [Elecraft] K3 Filter Switching Problem?
Warning! K3 filter use item follows.
Currently, I only have the standard 2.7 KHz filter in the FL3 slot on
the RF board. I chose this location due to potential future additions
of the 2.1 and 1.8 KHz filters, in slots FL2 and FL1 respectively.
Here is what I observe: With FL3 manually selected via the XFIL button;
when I try to rotate the Width control below a value of 2.7 KHz, the
rig automatically switches to the FL1 position, which is empty. The
receiver goes dead. When I quickly reverse the Width adjustment, FL3
is not switched back. I have to manually select FL3 again with the
XFIL button. Once back in FL3, I can adjust the Width control to
higher values above 2.7 KHz with no problem and the passband gets
wider.
Is this normal? I thought the DSP circuit would continue to narrow the
passband even though the roofing filter is broader. But, why does it
switch to an empty filter slot? Did I do something wrong during the
Configuration setup?
Is this a firmware issue? I have not downloaded the latest updates
yet.
If I had narrower filters in the FL1 and FL2 slots, then I would expect
the circuit to auto-switch to those as I narrowed the passband via the
Width control. And, they should switch back in reverse order as I
widen the passband. Right?
73,
Henry - K4TMC
K3 #98
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