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[RFI] Monitor hash

To: RFI List <rfi@contesting.com>
Subject: [RFI] Monitor hash
From: N4ZR <n4zr@comcast.net>
Date: Sat, 9 Nov 2019 21:18:28 -0500
List-post: <mailto:rfi@contesting.com>
I have two Asus 27" LCD monitors, one of which I have had for a while; the other is new.  Today I was getting organized for a little noise research and had my portable SW radio on the desk right in front of the monitors.  Wow, what a lot of hash (on AM).  Then I moved it closer to the two screens, and the noise increased dramatically.  18 inches away there's nothing noticeable, but in close the hash is backed up by a high-pitched tone, which I'm guessing has something to do with the sweep frequency.  The funny thing is that they do not appear to affect RX  noise levels on my K3, all the way from 1700 KHz  to 21 MHz. I know that my station isn't wonderfully choked against common mode currents, but my impression is that this noise is no harm, no foul. Opinions?

  --

73, Pete N4ZR
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