ay, July 04, 2008 3:26 AM
> To: [EMAIL PROTECTED]; 'Lee (WW2DX)'
> Cc: 'Elecraft Reflector'
> Subject: RE: [Elecraft] K3 Two amplifiers 1 key line
>
>
>
> All the work has already been done by Paul, WD7D. See "Improved
> Amplifier Interfacing f
I see several suggestions already, mostly involving building circuits. That
is fine if you wish but you could also just connect together the key lines,
using diodes to isolate them from one another, and making sure you respect
the current and voltage ratings of the key line. Both amps will of cour
... Joe, W4TV
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Don Wilhelm
> Sent: Thursday, July 03, 2008 5:48 PM
> To: Lee (WW2DX)
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] K3 Two amplifiers 1 key line
>
>
Lee,
You should be able to provide control lines for HexFETs or some other
kind of switch with just a little bit of logic and the signals from the
ACC connector.
Look at the Band Data outputs - the only time *both* Band3 and Band1 are
at a high impedance state is on 6 meters. A NAND gate (w
There's always the old school way - you could put a DPDT switch in the
keying line, and switch between the amps manually. Given that that's
only one motion, and we have to push the BAND switch repeatedly to
move between bands, that's not such a big deal. :-)
73,
Steve
> Has anyone come up with
Lee
Something like the KRC2 band decoder
could be used to steer the PTT line as
you change bands.
73, Bob N6WG
- Original Message -
From: "Lee (WW2DX)" <[EMAIL PROTECTED]>
To: "Elecraft Reflector"
Sent: Thursday, July 03, 2008 10:21 AM
Subject: [Elecraft] K3
I have a HF amp on ANT1 and (soon to be) 6M amp on ANT2. ANT2 is
dedicated 6M antenna.
Has anyone come up with a way to PTT each amp when on desired band? Is
it possible to just hook both AMPS to the same PTT key line so both
amps Key at the same time but the RF path would then take over?
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