[WriteLog] WriteLog Digest, Vol 187, Issue 2

Alan Maenchen ad6e at arrl.net
Tue Jul 3 14:37:36 EDT 2018


I suspect that USB cable is inactive UNLESS you run WL or some other rig
control software. That would explain the noise.
Suggest adding several ferrites to the USB cable. Also, you might try to
add good heavy grounding (bonding) between the computer chassis and the
radio. I certainly can't explain why that wasn't a problem before your

GL & 73, Alan  AD6E / KH6TU

> Message: 2
> Date: Tue, 3 Jul 2018 16:34:21 +0100 (BST)
> From: geoff plucknett <geoffg4fka at virginmedia.com>
> To: Reflector Writelog <writelog at contesting.com>
> Subject: [WriteLog] Generated noise
> Message-ID: <585855656.1046415.1530632061867 at mail2.virginmedia.com>
> Content-Type: text/plain; charset=UTF-8
> I've only noticed this since updating to v12.29G in June. Computer is
> connected to IC-7610 via USB lead with everything set for COM3 and 4 as
> standard. When I bring up WL a load of hash noise of around S7 appears on
> the receiver, specifically on 14 MHz but seems to cover at least 1 MHz
> either side. The noise disappears when WL is switched off. Not something
> I've seen before. Any thoughts?
> Geoff G4FKA

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