Thanks Steve and John for the info and explanation...
de Randy, W7HR
Port Orchard, WA
********************************************
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of JMLTINC@aol.com
Sent: Friday, February 29, 2008 11:41 AM
To: amps@contesting.com
Subject: Re: [Amps] Does coax loss depend on SWR?
All along the coax (with SWR > 1:1) the forward and reflected voltage and
current components add vectorially. The vector sum of each component
(voltage
and current) is that of the forward and reflected components and the phase
difference between them. The resultant voltage or current is always higher
than
the incident wave component value.
As the coax has both conductor (I squared R) and dielectric (E squared / R)
losses, the increase in voltage and current in the coax relate to increased
loss within the coax. And, as all the reflected power is not absorbed by
the
load on its return trip and re-reflected, even more power is still lost
with
each trip.
-John, N9RF
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