Exactly. This is computer polling. Put as much ferrite on the USB (serial
port) cable as you can.
73, Igor UA9CDC
----- Original Message -----
From: "K4ia via Elecraft" <elecraft@mailman.qth.net>
To: <bwru...@gmail.com>
Cc: "Elecraft Reflector" <elecraft@mailman.qth.net>
Sent: Monday, October 06, 2014 4:19 AM
Subject: Re: [Elecraft] Strange "Ticking" sound with K3/0 Mini to
RemoteRigfor remotely controlling K3.
USB or serial port polling? Try a different adapter or one that uses an
optoisolater
Craig Buck
On Oct 5, 2014, at 5:36 PM, "Brian F. Wruble" <bwru...@gmail.com> wrote:
Hi All:
The symptom I am describing persists despite changing routers, internet
systems, and cities. In a QSO this morning, the other parties reported a
ticking sound on my transmitted signal --- faint but noticeable --- and I
could also hear it in XMIT Monitor. I was operating my remote gear as a
test --- in the same room as the K3, and on the same LAN.
I have now set myself up 110 miles away, and the sound persists. I am
able
to work others, get good signal reports, but I can hear the tick tick
tick,
about 2 per second.
In testing, I find the sound is there even if I power down the gear ---
the
radio and the control end. It persists if I remove 12VDC from the K3/0
mini. Also if I remove the wifi module from the RemoteRig control box.
If I remove power from the RemoteRig, it goes away. With power to the
RR,
the ticking goes away if I unplug the "TTL" line from the K3/0 mini.
Unplugging the other lines makes no difference, though it becomes fainter
if I unplug "Aux/Mic." It persists if I remove the ethernet cable
connecting the RemoteRig to my router. It persists if I unplug the USB
line from the RemoteRig to my PC.
This symptom appeared after a good period of time when everything worked.
And all functionality is still there --- just this maddening tick tick
tick
--- like something from Edgar Allan Poe.
All ideas gratefully accepted.
73 de Brian W3BW
*Brian F. Wruble, C.F.A.
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