RE: RE: cat5 cable picking up radio ?

["Amar Nagi" <amar@xxxxxxx>]

what can i do to my audio signal to make it balanced
so i don't pick the radio signals ?


      -----Original Message----- 
      From: Mark Harrison
[mailto:Mark.Harrison@xxxxxxx] 
      Sent: Fri 31/05/2002 13:07 
      To: ukha_d@xxxxxxx 
      Cc: 
      Subject: RE: [ukha_d] RE: cat5 cable picking
up radio ?
      
      
      Well - there are a few applications which
use the 8 cores separately rather than as 4 balanced pairs. STP might come
in useful there.
       
      Also, it's useful in factory / industrial
environments. If you want cable to go anywhere near a blast-furnace,
say.

      I've never seen an application that called
for it in a domestic / office environment.
       
      M.

            -----Original
Message----- 
            From: BUTLER,
Tony, FM [mailto:tony.butler@xxxxxxx] 
            Sent: Fri
31/05/2002 12:58 
            To:
'ukha_d@xxxxxxx' 
            Cc: 
            Subject: RE:
[ukha_d] RE: cat5 cable picking up radio ?
            
            
            Mark,
             
            If CAT5 is
designed for balanced signals, which are (relatively) immune to
interference, what then is the point of screened CAT5?
            It's a
question I've been meaning to ask for a while (following a previous
discussion about ethernet being balanced) and you've just reminded me of
it.
             
            Any
ideas?
             
            Tony

           
      -----Original Message-----
           
      From: Mark Harrison
[mailto:Mark.Harrison@xxxxxxx]
           
      Sent: 31 May 2002 12:43
           
      To: ukha_d@xxxxxxx
           
      Subject: [ukha_d] RE: cat5 cable picking up
radio ?
           
      
           
      
           
      You CAN, if you really feel like it, wrap
the CAT5 cable in kitchen foil, and ground one end, which will help a
bit...
           
       
           
      ... But it's fundamentally a crap way to do
it. If you're going to carry signals over CAT5, then they need to be
balanced. The whole point of balancing is in the rejection of interference
(such as shortwave radio.)
           
       
           
      Doesn't matter whether you're talking
10baseT ethernet, 100baseT ethernet, or KAT5 audio... balancing is the only
way to go.
           
       
           
      M.

           
            -----Original
Message----- 
           
            From: Amar
Nagi [mailto:amar@xxxxxxx] 
           
            Sent: Fri
31/05/2002 12:37 
           
            To:
ukha_d@xxxxxxx 
           
            Cc: 
           
            Subject: cat5
cable picking up radio ?
           
            
           
            
           
            I lay as a
temporary solution a cat5 cable and i run audio down
           
            it to the a
set of mulitmedia pc speakers in the bedroom.
           
            and for some
reason it picks up radio. I can hear
           
            a radio
program in the audio.
           
             
           
            any ideas
?



           
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