I wrote a macro that will scan the range between the VFO-A freq and the
VFO-B freq. Just dial in the freqs and hit the macro key. A short push
will scan muted; a long push will scan unmuted. A manually paused scan
can be resumed by hitting the SCAN key. Named "SCANNOW" in the
Programmer's Reference PDF.
Regarding scan, I wish...
- scan rate could be variably adjusted during scan; the current COARSE
is often too fast and the FINE is too slow;
- could set a fixed dwell time; the current dwell time is random.
73,
Drew
AF2z
On 04/25/18 23:46, Wayne Burdick wrote:
Those of you who are new users of an Elecraft K2, K3/K3S, KX2, or KX3 may not
know about the scanning and channel-hoping feature that’s common to all of
these rigs. Scanning a seemingly “dead” band segment can reveal signals as they
come up, allowing you to do other things (work out, paint, dust, reread
“Ecotopia” by Ernest Callenbach, brew an IPA, whatever).
You might think of scanning as an eyes-free panadapter. Well, I do.
The basic scanning mode keeps the receiver muted until signals appear. It’s a
real ear-saver. In addition, the K2, K3/K3S, and KX3 have a “live scan” feature
that simply scans continuously with the receiver audio unmuted. This is
especially useful on bands where very weak signals might appear from nowhere
out of low-level atmospheric noise, say 15 meters.
All of these radios also support hopping among a set of labeled memories. This
is typically used on 60 meters or other channelized bands, e.g. those with
repeater allocations.
For details, see “Scanning” in your owner’s manual's table of contents.
Tips:
- If you’re scanning for CW signals, perhaps this coming Friday in honor of
Morse’s birthday (hint), set the bandwidth very narrow (50-200 Hz).
- If there’s a lot of band noise, turn off the preamp. This will give the
scanning algorithm more audio dynamic range to work with.
- Scanning steps match those set up for the VFO knob; using fine steps will
miss fewer signals but take longer to scan the segment of interest.
- Configure all of the above *before* saving setups to memory as scan
start/stop end points (VFO A and B). Later, you can recall your favorite scan
ranges preconfigured for various band conditions.
73,
Wayne
N6KR
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