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Old December 15th 09, 07:39 AM posted to rec.boats.cruising
Wayne.B Wayne.B is offline
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Default Uniden 525 VHF and general question

On Mon, 14 Dec 2009 23:33:45 -0600, brian whatcott
wrote:

Wayne.B wrote:
On Mon, 14 Dec 2009 19:04:12 -0600, brian whatcott
wrote:

If a coax gets a 50 ohm lossy
resistance, then it soaks up all the power with no reflection.

That's where I'm coming from...


And so am I. A long length of lossy cable will show no reflected
power which translates to an SWR of 1:1.


Then we are agreed that a SWR reading can be misleading in this
circumstance.


It depends on your expectations. An SWR meter is not the right tool
for evaluating the condition/quality of coax. For that you need a
stable signal source, a dummy load and a good watt meter like a Bird.
The ratio of power in vs power out translates to the loss in dbs with
a little calculation.