[Elecraft] Skimmer and the K3S
Joe Subich, W4TV
lists at subich.com
Fri Sep 2 20:19:55 EDT 2016
If you expect 100 KHz (more than 22 KHz) with CW Skimmer you will need
to split the receive antenna loop and feed a true SDR (e.g., SDR I/Q,
Perseus, QSR1, etc or equivalent) tuned to the bottom of the active
band. See the CW skimmer documentation - any configuration that feeds
skimmer from the IF and tracks the IF offset is limited to 22 KHz (the
operating frequency +/- 11 KHz).
This is a design choice made by the developer of CW Skimmer. If you
have questions, contact him.
The "direct" receiver configuration does not require/use microHAM
Router. Other software is used to link logging software and skimmer.
73,
... Joe, W4TV
On 9/2/2016 2:01 PM, Peter W2IRT wrote:
> Hello all,
> With the vast majority of my friends having gone the Flex route rather than
> the K3, I'm finding I'm at a rather huge disadvantage in terms of CW
> operation, and that's Skimmer, which is an absolute game-changer for
> everybody who's running it. I just can't figure out how to make it work
> acceptably well with the K3S/P3 combination I have here.
>
> I went the LP-PAN route and the birdies/mirror images make that device
> wholly unsuitable for me, so I'm back to square one. I don't want to spend
> another small fortune on interface boxes, but something better than LP-PAN
> is clearly the answer. I just don't know what it is, what to do once I buy
> it, or anything else. The big limitation I have is whatever devices that I
> will need to buy will also have to play well with MicroHam Router software,
> and in the past that has left my head spinning. This stuff is SO far beyond
> my understanding I feel as if I've been thrown into the deep end of the pool
> without knowing how to swim.
>
> Working backwards, let's say the required end result is to have the CW
> portion of whichever band I'm on skimmed and calls displayed on my bandmap
> in either N1MM+ or DX Labs' Commander. Not 22kHz worth of calls relative to
> my operating frequency, but everything, from .000 to .100 and maybe beyond.
> If I'm running in CQWW or ARRL-CW, I'm less impressed with what the cluster
> is showing me and would rather rely more heavily on what my own antenna is
> picking up.
>
> I have only two antenna feeds on the property: Whatever's selected on the
> tower or a K9AY loop connected to the RX-in line on the back of the K3S. I
> don't' have a separate antenna to feed another receiver so I guess the idea
> is to take signal off the IF from the P3 out, yes? Like I said, I'm really
> very old-school and I need help getting up to speed with all this stuff. I
> migrated from a Mark V last year and the learning curve on the K3S is still
> as steep as Mt. Everest for me. Any help greatly appreciated,
> please'n'thanks!
>
> ---------------------------------------------
> 73 and Good DX
> Peter, W2IRT
>
>
>
> S/N 10023
>
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