[Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR

wmbrian bdeuby at gmail.com
Sat Apr 6 14:01:33 EDT 2019


I recently added the KAT500 and KPA500 to my K3 station. 

I have noticed that when the SWR (after tuning)  as displayed on the KPA500
is 1.0/1  (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The
green 1.0/1 SWR LED on the KPA500 does light up.)

I have assumed that the 1.2/1 KAT500 SWR LED does not light up is because 1)
the KAT500  threshold for the first SWR LED is 1.2/1 and 2) because no
tuning action has taken place in these circumstances (due to memorized
KAT500 tuning configuration).  However, I noticed at the bottom of page 49
of Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed
even when the tuner is bypasssed". So, I'm confused. Does no SWR LED light
when the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1?

Thanks,

Brian, K8GRR



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