I have an IBM T42 now with an original IBM PSU that is clean absolutely but
I had an IBM 600E previously that had a Targus aftermarket PSU that
generated very strong QRM, as soon as I replaced that with an original IBM
PSU it was clean.
Similarly replacing a (dead) original PSU in an IBM E-Pro desktop with a
crap Powmax PSU generated all kinds of QRM, again replacing the Powmax with
an IBM original cleaned everything up.
73,
Julio VE3FH
>From: "William Conlan" <w_conlan@eircom.net>
>To: <RFI@contesting.com>
>Subject: [RFI] Noisey PSU (Laptop) on HF Decodeing
>Date: Tue, 29 May 2007 20:29:18 +0100
>
>Hello guys,
>Has anyone experienced noise interference from Laptop PSU when listening
>(decoding) HF Signals.
>
>Its not such a big problem on VHF/UHF for some reason.
>
>Many thanks in advance,
>
>Best Regards,
>
>Bill.
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