[Elecraft] Re: Slow Relay-Hi SWR-Shutdown

Mon Nov 24 14:43:01 2003

Beside firmware, which might destroy QSK operation as we know/enjoy it,
there are other options:

1. The AL-1200 is 'famous' for its slow, clunky relay. You can speed up the
relay by adding additional circuitry:
http://www.k6xx.com/radio/fastrely.html
This also applies to the AL-1500, and many other amps with slow relays. The
circuit may be built inside the amp to keep things uncluttered (that's what
I have done with a 1200 and a 1500).

2. The KRC-2 box supposedly has a MODE output. With this output, you can
build logic that will allow better integration into a contesting station
that requires/uses a PTT signal.

73 de Bob, K6XX
[email protected]

> From: Hank Kohl K8DD <[email protected]>
> Subject: [Elecraft] Slow Relay-Hi SWR-Shutdown
>
> Been gone for the past few weeks and finally back.
> Think I have read everything on the K2/100 - Amplifier - high SWR -
> shutdown and did not see any answers or solutions to the problem.
> This is present on both of my K2/100's.
> I use CT or NA for most of my operating, both in and outside of contests.
> So why not use a feature in those contest loggers - PTTDELAY to delay CW
> from the PC until the relay in the amp is picked?  Not possible with the
> K2/100.  PTT is not PTT when the K2/100 is on CW, it is full output.
> Is there a line I could stick out the back of the radio to pick just the
> PTT which would pick the relay in the amp and not have the K2/100 go to
> full output?
> This has been getting kind of frustrating - this problem is
> repeatable with
> the K2's did not exist with the amp (AL-1200) before using the K2's and
> still doesn't with the other radios.
> Other than going to an Alpha or a QSK kit, has there been a
> solution that I
> missed in the archives?
> 73    Hank    K8DD
>
>
> --__--__--
>
> Message: 14
> Date: Sat, 22 Nov 2003 19:55:36 -0800
> From: Wayne Burdick <[email protected]>
> Organization: Elecraft
> To: Hank Kohl K8DD <[email protected]>
> Cc: [email protected]
> Subject: [Elecraft] Re: Slow Relay-Hi SWR-Shutdown
>
> Hank,
>
> We can accommodate slow amp relays with a KPA100 firmware change,
> and you you
> can beta-test it for us. I'm on my way out the door for a week's
> vacation, but
> Gary Surrency (AB7MY) can send you a test copy of the firmware.
> Just e-mail him.
> This may not be the final version, but we need to see how well
> this one works in
> a real-life slow relay situation.
>
> 73,
> Wayne
> N6KR