RS 232 cable?

[W5CEM]

What is the proper RF isolation for the GND on a RS232 cable?  I want several for different QTHs, so will build them myself.  

thanks....cleve/W5CEM

[Don Wilhelm-4]

Cleve,

Jim Brown K9YC has posted much good advice on this subject.  Take a look
at his website information at
http://audiosystemsgroup.com/HamInterfacing.pdf
and
http://audiosystemsgroup.com/RFI-Ham.pdf

Pay particular attention to his comments about using twisted pair (CAT5)
for RS-232 interconnects to minimize RFI - shielded cable may not 'hack'
it..

73,
Don W3FPR

W5CEM wrote:

> What is the proper RF isolation for the GND on a RS232 cable?  I want several
> for different QTHs, so will build them myself.  
>
> thanks....cleve/W5CEM
>  
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