[Elecraft] K3 - Band Decoder

[Robert Tellefsen]

Josh
I recommend sticking with the KRC2, because it has
a variety of outputs that you can mix and match
for whatever combination of antennas, filters, stubs,
etc that you want to switch as you move from band
to band.
73, Bob N6WG

----- Original Message ----- 
From: "J. Heide" <kd6kml at sbcglobal.net>
To: <Elecraft at mailman.qth.net>
Sent: Tuesday, April 08, 2008 4:04 PM
Subject: [Elecraft] K3 - Band Decoder


>
> OK, now that the Katiegram has arrived, I need to think about
antenna switching. I have the following antennas that I want to use
with the K3
> Windom for most all bands
> Yagi for 20 meters
> Yagi for 6 meters (goes to the XV50)
> Vertical for 160 meters
> Vertical for 6m FM (which is not used with the K2)
>
> Right now, I have a KRC2 that switches the 20m yagi and 160 vertical
on antenna port 2 on the radio. Since the K3 has 4 band decoder (TTL?)
lines coming out of it, it is easy enough to build logic to pull in
the right relay. Can the "DIGOUT" line be used (with proper buffering,
of course) to switch a relay for changing from horizontal to vertical
on 6m? Basically, windom and 6 meter antennas to antenna port 1 (with
the band decoder switching from windom to 6 meters, and digout
selecting wither the vert or horiz) and the 20m beam and 160 vert
switched on antenna port 2?
>
> I have several RelComm RDL-SR002 relays, one of which I am using
with the KRC2 now, so quality relays are not a problem here.
>
> Sorry if this is a bit long, but without equipment in front of me, I
have a hard time visualizing things.
>
> 73
> Josh
> K6ZRX
>
>
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