[Lowfer] PC noise reduction experiments here

[Howell, Laurence J]

I must admit if I fail to "lose" a warbly from a laptop psu/screen (dell mostly) I pull a spare AC PSU out of the draw and try that - Ive got some that are awful at 60KHz but great at 137Khz and others poor at 500kHz - etc - I got to 20T on a large 77 toroid before I saw a good reduction, I think Ive got a J type out there too.

This present hotel is dang quiet so Im guessing not a lot of spurii current running around from A to C via Z  - and nearly all the noise from the room doesn't make it to the probe - 

-----Original Message-----
From: lowfer-bounces at mailman.qth.net [mailto:lowfer-bounces at mailman.qth.net] On Behalf Of Andy - KU4XR
Sent: Tuesday, January 26, 2010 11:11 AM
To: 600 meter group; Part-15 Yahoo; lowfer at mailman.qth.net
Subject: [Lowfer] PC noise reduction experiments here

Well OK !! I get it now !! the aluminum foil on the power cord
wasn't a worthwhile effort, But don't let the aliens know that.

Snipped

Andy - KU4XR - EM75xr - Friendsville, TN.
LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
http://www.myspace.com/beaconxr
http://webpages.charter.net/ku4xr/


      
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