[Elecraft] K2/100 RS-232 Noise

[Gregg W6IZT]

I once had this problem too. I traced the problem to the routing of the
ribbon cable from the K2 to the KPA100.

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of David Fleming
Sent: Monday, April 23, 2007 10:56 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K2/100 RS-232 Noise

Hi all..



I've just completed the initial testing and alignment on the KPA100.
Everything checks out fine. All resistance and voltage measurements are
within spec and I'm getting 100+ watts out on all bands. However I'm
getting some annoying noise from the RS-232. My software polls the K2
every 250ms (4 times per second) and it generates noise on all bands
every time it's polled. It's coming through load and clear. It wasn't
there with the KIO2, so I suspect I may have a problem somewhere in the
KPA100 RS-232 circuitry. Is this a known problem, or do I have something
wrong? I can't find anything searching the archives.



Thanks..



-David W4SMT





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