[Elecraft] K3 antenna tuner question
Alexander Sack
pisymbol at gmail.com
Wed May 25 18:20:48 EDT 2011
On Mon, May 23, 2011 at 7:45 PM, Bill Swindell - K1LED
<bill.swindell at att.net> wrote:
> I have a K3/100 with the internal antenna tuner. The config is set to AUTO
> but it seems that I still have to press the ATU tune button to get the ATU
> to properly tune when I change bands. Is it supposed to be automatic or not?
I'm confused, are their radios that in real-time tune a LC network to
whatever band/frequency you are on?
If you use an analyzer to graph your VSWR curve across a band, and you
are pretty flat (say 1:1.5 across the whole band), then you really
don't need to re-tune after the first shot.
However, when you switch bands you switch frequency which means unless
your VSWR is low across all bands of interest, you need to tune up
again.
I think though the ATU has some memory with respect to what band you
are on which helps.
I don't think the K3 is any different than other high-end rigs? Am I wrong?
-aps (KC2ZSX)
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