[TowerTalk] Coax Loss

[Gene Smar]

Jim:

     I understand your confusion:  Twice as long = 3 dB more loss, right? 
But the loss figures for coax is given in dB per 100 feet (or meters) at a 
given frequency. That is, if a particular coax has a stated loss of 4 dB per 
hundred feet at 450 MHz, then if you double the length you get ANOTHER 4 dB 
of loss at 450 MHz.  You double the number of dB's of loss.

     Hope this helps.


73 de
Gene Smar  AD3F

----- Original Message ----- 
From: "Jim Miller KG0KP" <JimMiller at STL-OnLine.Net>
To: "TOWERTALK Reflector" <TOWERTALK at contesting.com>
Sent: Thursday, February 04, 2010 11:38 AM
Subject: [TowerTalk] Coax Loss


>I have struggled with this and have seen it both ways.
>
> Take an example of 100 feet of some coax at 5 db loss.
> Is the loss at 200 feet 8 db or is it 10 db ????
> And is the loss at 50 feet 2 db or 2.5 db ????
>
> Thanks,
> 73, Jim
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