RE: [HCDX] Emerging Techniques in High-Tech DX

["Charles Hutton" <charlesh3@xxxxxxx>]

I don't know what machines are best / worst but would not count on any of
them to be perfect. To compensate for the lack of perfection, I always use
snap-together style ferrite chokes on all cables coming into and out of the
laptop. Fair-Rite makes a few, and Radio Shack carries one, or a similar
product from someone else. We used them in the telecommunications
laboratories I have worked in, and they really cutthe noise down. MW / SW
DXíng is another matter and they may not totally solve the problem, but they
should be worth a try. I use them at our Grayland DXpeditions and either
because of the coax feeds and / or the chokes, I have had no problem with
either my 600 MHz or (sometimes) 300 MHz laptops. Others have had a laptop
RFI problem at Grayland but I was not there at the time and don't know what
the cause and solution were.



Chuck Hutton
Seattle WA

-----Original Message-----
From: hard-core-dx-bounces@xxxxxxxxxxxxxxxx
[mailto:hard-core-dx-bounces@xxxxxxxxxxxxxxxx]On Behalf Of Nick
Hall-Patch
Sent: Sunday, January 05, 2003 10:59 PM
To: Hard-Core-DX Email List
Subject: Re: [HCDX] Emerging Techniques in High-Tech DX


At 12:20 AM 1/5/03 EST, you wrote:
>Can you comment on which laptops are the best/worst for generating RFI?
>

In addition to John's comment about not RFI problems with
laptops...remember that at Grayland we use electrically sanitary coax
lead-ins for our antennas with separate antenna ground from receiver
ground.  A loop antenna next to most laptops will show RFI!

best wishes,

Nick


****************************************************************************
Nick Hall-Patch
Victoria, B.C.
Canada

e-mail: Nick_Hall-Patch@xxxxxxxxx
(mail forwarded via nhp@xxxxxxxx)

****************************************************************************

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THE INFORMATION IN THIS ARTICLE IS FREE. It may be copied, distributed
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