[Elecraft] USB Adapters and RF

[Lee Buller]

Very interesting....

Maybe I should have said..."I think I am grounded properly!"  I will have to 
check this out.  


Lee
K0WA






________________________________
From: Ian White GM3SEK <gm3sek at ifwtech.co.uk>
To: elecraft at mailman.qth.net
Sent: Wed, November 2, 2011 2:18:56 PM
Subject: Re: [Elecraft] USB Adapters and RF

Lee Buller wrote:
>
>I run legal limit on some contests.  I seem to burn up USB to Serial 
>devices.  I am grounded properly.  I am suspect of these things in high 
>RF fields. But...what is a guy gonna do when RS232 Serial ports are 
>totally discontinued. Turn down or turn off the amp.  Hmmmmmm!
>

Look very carefully at that statement "I am grounded properly"; because 
the evidence suggests otherwise. More specifically, it suggests that the 
ground terminals for various parts of your shack are not correctly 
bonded together. Another very common source of RF in the shack is a bad 
shield connection inside a PL259.

A few minutes applying a clamp-on RF current meter to various connecting 
cables could tell you a great deal.


-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
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