On 2/8/2013 3:34 PM, Dave wrote:
Bob,
this discussion fails to address the question of antenna
efficiency and relative field strength of the radiated signal.
Coaxial cable is extremely lossy when the SWR ....is
above 3:1. Thus, it will not be delivering significant power
to the antenna on non-resonant frequencies.
____________________________________
I agree that there is respectively more loss
the higher SWR is ... but I am uneasy with
the notion you will lose all your signal power
with a mere 3:1 or even a 6:1 SWR. The figures
I have seen, are are no where near that high.
Can you quantify the actual loss in coax from,
say a 5:1 SWR over a typical run of, say,
80 feet of coax feed line?
I have see various numbers on 43 foot monopole
non-resonant antennas, and the loss is just not
that high -- not that I dispute there is a significant
loss - but not a drastic as you imply.
Thus, I wonder if you could quantify the
actual loss you think is involved.
Not picking a fight... I am serious in that I
don't believe the loss is as large as you suggest.
But I am open to proof I am mistaken.
-------------------- K8JHR ---------------------------
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