I've been doing a bit of looking at SWR indications. The numbers are
factually frightful. With 100 watts forward power and 0.25 watts
reflected the SWR is 1.1:1. And with 500 watts forward and 1.25 watts
reflected the SWR is still 1.1:1. I believe that says 0.25% of the
power is being reflected. But I ask, what is the SWR at the antenna
feed point? It is certainly higher than at the transmitter due to feed
line losses.
In using 100 ft of RG-213 at 14 MHz, the matched line loss is 0.780
dB. With a 1.1:1 SWR the total loss goes up by 0.001 dB and the SWR at
the Load is 1.12:1 where Z = 48.25 -j4.63 ohms.
All of this is just "killer math" and makes absolutely no difference
except to the operator that expects an SWR of 1.0:1 all the time.
73
Bob, K4TAX
http://elecraft.365791.n2.nabble.com/K3-SWR-Numerical-Indication-td7643839.html#a7643944
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