[Elecraft] K3 and linear amp

[Roger Marrotte]

I guess as of now I'm out of luck if I want to use my amp with a K3.  I just
checked the manual for my AL-811H and "The open frame relay in the AL-811H
takes approximately 15ms to switch states".  My K3 is on order.  I hope
there's a K3 firmware change made before I get my K3, that will allow me to
adjust the change over timing.  I'm far from an expert with amps.  I have no
idea what an average switch over time is for amps in general.  Ameritron
sells a high speed switching option, the QSK-5, that reduces the switching
time to 1ms.  It costs around $300.00.  A K3 firmware change would sure be
less expensive.

Roger, W1EM   

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Dave G4AON
Sent: Thursday, March 20, 2008 10:45 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K3 and linear amp

Todd

Beware the manual for the AL1200 doesn't appear to mention the change over
timing of it's relay, the K3 outputs RF approx 10 milli seconds after the
linear keying line goes low - measured on mine with a half decent scope.
There is currently no adjustable delay for that timing in the K3 (although
it has been mentioned as being on the "to do" list), even my TS-480 has a
choice of 10 mS or 25 mS - it only costs half the price of a K3...

73 Dave, G4AON
K3/100 #80
================

One question remains and it is probably ridiculously simple but I can not
see it. How do I get the K3 to trigger the relay in my Ameritron AL 1200?. I
see no connection for a cable to the amp nor nothing in the config menu.

thanks in advance!

73
de
todd
WB2ZAB