Topband: EZNEC 5.0 +

[Tom W8JI]

Return loss is just another misleading confusing way to express SWR.

Return loss, like percentage reflected power, does not indicate any type of 
loss. It just expresses SWR in a different form.

We can have 10:1 SWR, which would be a 1.743 dB return or "mismatch"  loss 
or 67% reflected power, and still have virtually no loss. We can have 67% 
reflected power and still have nearly 100% of transmitter power getting into 
the antenna and being radiated.

The best advice is to ignore it all, and just use SWR for now.  :)


----- Original Message ----- 
From: "Charles Yahrling" <cfytech24x7 at gmail.com>
To: <topband at contesting.com>
Sent: Friday, December 05, 2014 3:29 PM
Subject: Topband: EZNEC 5.0 +


> Just getting started modelling and looking for answers to questions not
> found in manual so far.  For example, what exactly is included in the
> Return Loss figure shown in the SWR window?  Just ground reflection loss,
> total system loss, something else?  Trying to understand why Return Loss 
> is
> greater for lower SWR curve values. e.g see this when toggling between std
> and alt impedance. What is this suggesting, go with lower return loss or
> lower swr curve?
>
> An incomplete grasp of the fundamentals is admittedly likely here <g>.
>
> 73, chuck
>
>
> -- 
> de AB1VL
> NAQCC #6799
>
> ab1vl.com
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