[Elecraft] K2 Amp keying question

[Steve Knell]

Hi Chris

I had a similar "problem" with QSK switching of my amplifier.

This is what I did to fix it:

    Hit "MENU"
    Scroll to "t-r"
    Hold down MENU to EDIT the t-r number
    Hit "DISPLAY" to toggle from "8r nor" to "8r hold"

"8r hold" is the setting I used and the amp keying was fine.

Good luck

73
Steve G0CKP

----- Original Message -----
From: Christoph Rheker <DL4YAO@web.de>
To: <elecraft@mailman.qth.net>
Sent: Sunday, September 22, 2002 10:00 PM
Subject: [Elecraft] K2 Amp keying question


> Hallo fellow kit builders,
>
> I have a problem keying my Amp with the K2 in CW mode.
>
> I am using a circuit similar to the one described on the
> elecraft web pages.
>
> The signal I am using is "8R" as described because the
> web page says:
>
> "We used 8R because it transitions from 8V to 0V about 15-20ms
> before the K2 TX turns on."
>
> Sooo... here is the issue:
>
> The "8R" signal is 8 Volts during TX and goes to 0 Volts during
> RX.. that's what I thought...
>
> But instead "8R" is 0 Volts only when actually the TX is keyed.
>
> For example:
>
> Via the menu I set the T-R delay to 0.5 secs. I sent a single
> "DIT", the letter "E".
>
> I would expect that the "8R" signal goes down to 0 Volts for
> the time "DIT" is sent plus 0.5 secs. But it is at 0 Volts
> only for the time the "DIT" is transmitted. No delay at all.
>
> This is a problem because my Amp is a non-QSK type and it doesnt
> like the fast switching.
>
> I am looking for a way to key my Amp while I am on TX including
> the time defined in the T-R menu.
>
> I have looked at the diagram but am unsure what to do next.
>
> Any idea will be welcomed.
>
> Thanks and regards from Munich (Oktoberfest City for the next 2 weeks ..))
>
> 73 de Chris, DL4YAO
>
>
>
>
>
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