I did have some RFI issues which I fixed a couple weeks ago with the SignaLink
and rig USB cord by putting them on a different hub (non-powered). May have
just swapped to a different problem.But before you could hear both the
disconnect and reconnect sounds and WSJT-X would complain about rig control
lost.
Now it's just the disconnect. I'm going to try and find out what device is
causing it...it may be a different RFI problem.
Hopefully I can figure this out but Windows doesn't generate an event
apparently on device connect/disconnect (lots of other events that I don't care
about though :-)
I also bough a metallic USB hub so may see if that fixes it too.
Hopefully it's reproducable...I'll let you know. It sounded just like the
problem you described with just the disconnect sound though which is why I
mentioned it. I agree...can't think of why it would cause it.
Does WSPR send CW id at end of transmission? Could that be a higher power
event?
RRRMike W9MDB
From: Bill Somerville <g4...@classdesign.com>
To: wsjt-devel@lists.sourceforge.net
Sent: Wednesday, January 6, 2016 8:11 AM
Subject: Re: [wsjt-devel] wsjtx 1.7.0 r6346 Hangs....
On 06/01/2016 14:05, Black Michael wrote:
> I had bumped up power on JT65 20M to 20W and I heard the system sounds
> like a USB driver disconnected. Never heard it reconnect though.
Hi Mike,
that seems to be an RFI issue; USB connections, especially hubs are
prone to RFI and will disconnect devices at the slightest level of
interference. This is probably due to noise on the USB 5V line as that
line is already used to detect USB device disconnection.
I've found that laptop mouse pads are particularly prone to this issue.
73
Bill
G4WJS.
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