Bob,
I think you may be a candidate for the KRC2 and an array of relays for
your antenna switching tasks. It can work great. When I have all the
work on my system completed I will switching a total of 13 antennas with
mine - the tuner just trims up the match a bit when needed.
If you have 2 banks of antennas (1 bank tuned and the other presenting
50 ohms), the KRC2 can select the proper antennas for each band and the
ANT1/2 button selects between the 2 antennas for each band - If you have
more than 2 antennas on any band the KRC2 F4 button can be used to turn
on the AC1 thru AC3 lines which can be used in conjuction with the
normal band select outputs to select additional antennas - I find it
much more sensible and automatic than antenna switches.
73,
Don W3FPR
Robert Tellefsen wrote:
Hi Don
Yes, if there were only two antennas, that
would work., and I've done that. However,
I have more than that, some connected to a
rotary switch outboard to the K2.
When I switch them, I don't want to
retune the ATU with each new antenna I
connect, as I'm often switching to find the
best signal for a station I'm trying to work.
Some antennas present a nice 50 ohm match
as they are, and some don't. I'd like to put
the 50 ohm matches all together on one
port and those that need matching on the
other port.
I'm still trying to get to the point where all
the antennas are 50 ohms at the switch, and
then it wouldn't matter. But it ain't easy :-)
73, Bob N6WG
----- Original Message -----
From: "Don Wilhelm" <[EMAIL PROTECTED]>
To: "Robert Tellefsen" <[EMAIL PROTECTED]>
Cc: "Bill Coleman" <[EMAIL PROTECTED]>; "wayne burdick" <[EMAIL PROTECTED]>;
"Elecraft" <[email protected]>
Sent: Friday, May 04, 2007 5:14 AM
Subject: Re: [Elecraft] K2 Improvement Ideas--Adding on
Bob,
I see no real need for a bypass on just one of the tuner antenna jacks.
In my mind it is already there, but better - just do a TUNE once on each
band where your antenna is resonant and the K2 will remember - I regard
that as better than a bypass function.
73,
Don W3FPR
Robert Tellefsen wrote:
Bill
I'd like to add to your list the ability to have the
KAT2 autotuner be active on one antenna port
and be bypassed on the other.
I have some antennas that require the autotuner
for a match, and others that are already a good
match as they are.
I'd also like to see an improvement in the cw crystal filter
to improve the signal suppression outside the filter
passband.
73, Bob N6WG
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