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Re: [TowerTalk] Resistance of RG-8 cable?

Subject: Re: [TowerTalk] Resistance of RG-8 cable?
Date: Thu, 10 Dec 2009 13:03:10 -0800
List-post: <">>
K1TTT wrote...

> I think a better test is a return loss test at 10m, leave the
> far end either open or shorted and measure the reflected power or swr, the
> higher it is the better the cable.

Or, put a good dummy load at the far end, and measure the RF power out of the 
exciter into the cable.  Now, without changing RF level, move the power meter 
to the dummy load end and measure the power being delivered to the dummy load.  
Now you've measured the actual loss in the cable.  Compare it with the 
manufacturer's specified value, and you know if it has degraded.  If the 
resulting loss 
is something you want to live with, keep using the cable!

Remember, the loss of brand-new, high-quality cable IS NOT zero!


George T Daughters, K6GT
CU in the California QSO Party (CQP)
October 2-3, 2010


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