[Skimmertalk] Skimmer Advice (K3 IF issues)

Prasad VU2PTT vu2ptt at gmail.com
Tue Nov 10 02:27:35 EST 2015

I use LPB2 to serve the radio CAT to NaP3 pan adapter, HDSDR, Logger32, N1MM+. All work well with a click on any of the band maps. 

But, I have also found CW Skimmer and HDSDR cannot both use OmniRig at the same time. With or without LPB2.

I use a SDRPlay receiver with HDSDR in parallel with the TS590SG which has splitter within to give out a parallel RX line. HDSDR provides the signal to NaP3 over VAC - 48 kHz bandwidth.

73 de Prasad VU2PTT.

Sent from my iPhone

> On 10-Nov-2015, at 12:42 PM, Bob Wilson, N6TV <n6tv at arrl.net> wrote:
> (Little of what follows is skimmer-specific; further discussion probably
> belongs on some other reflector rather than SkimmerTalk)
>> On Mon, Nov 9, 2015 at 7:34 PM, Pat Rundall <pat at n0hr.com> wrote:
>> 4) With regard to using the Pixel Loop's Key line as protection... I have
>> used that, but wondered with SO2R, if I needed to (or even could) connect
>> both rigs to it.
> Yes, maybe with some diodes to ensure correct current flow.  In my shack I
> used the two unused "KEY OUT" signals from two Alpha amplifiers (which
> follow the PTT signals from the radio, even when the amps are OFF).  A
> simple RCA Y-adapter combines both "KEY OUT" lines into the Pixel Loop's
> control box PTT IN.  I didn't use any combiner diodes.  Keying either radio
> (by any means) disables power to the Pixel loop.
> Note:  even with these precautions, I find CW Skimmer "self spotting" me in
> contests, with some busted variant of my call like N6TVE or EN6TV or
> combinations that I can't anticipate, so I always shutdown my skimmer when
> I operates contests here).
>> 5) To get the waterfall (ie HDSDR), Skimmer, rig and N1MM+ to all follow
>> nicely, I wonder if it would work with a virtual serial port splitter tool
>> like LPB2.
> Maybe not.  Remember that the OmniRig control of the radio is two-way; the
> HDSDR cursor follows the transceiver *and* the transceiver follows the
> HDSDR screen (if you click on it).  If both the logging software and HDSDR
> try to poll or send commands to the K3 at the same time, there could be
> collisions and jumbled commands.  Maybe LPB2 handles all that; I really
> know nothing about it.  I only know that OmniRig handles multiple command
> requests seamlessly and flawlessly.
> But again, for a scope on a K3, the P3 (and P3SVGA if you can spare a VGA
> monitor) is really the best way to go.
> 73,
> Bob, N6TV
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