[Elecraft] auto tuners

Ron D'Eau Claire ron at cobi.biz
Sun Dec 16 11:59:59 EST 2012


To protect the rig the Ham must drop the power output to a safe level before
initiating a KAT500 Tune operation, just as one would do to adjust a manual
tuner. The difference is that the Ham doesn't have to manually turn knobs on
the KAT500 to find the best match.

The SWR the rig sees varies widely while the KAT500 is tuning.

Some rigs even require manually retuning the transmitter or amplifier output
before allowing the KAT500 to tune. The procedure for doing this safely is
described on page 13 of the KAT500 manual. 

73, Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of bill ny9h
Sent: Sunday, December 16, 2012 7:36 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] auto tuners

while we are fortunate to have a K3 which auto drops power for tuning,,,,
what about rigs that tune at higher power  or full power...

what does the rig's output  see at the input to the tuner when the tuner is
clunking/clanking along relays switching C & L 
components  ???   50 ohms...??
I would think this could challenge the stability of a set of outputs.

tnx

bill



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