I don't have any experience with the KW1000 but the internet reference says it
is a near copy of an SB-200 Heathkit. There are many of the SB-200 in use. I
have used my K3 to drive a Clipperton L with little difficulty and the main
difference is that the Clipperton has four of the 572B tubes instead of two. I
would connect the relay and ALC as well as a coaxial cable for the RF and start
with about 30 watts of output then increase it until you get the proper
performance. There is not a lot of precautions for the K3 and it is straight
forward. Just read the manual on both the amp and the transceiver and you
should be successful if both are in proper operating condition. I have retired
my Clipperton because good Cetron 572Bs are no longer being manufactured and
the Chinese Tubes are not good quality. I would not recommend putting much
into any 572B amplifier unless I had in hand good tubes to use. You can
successfully replace 811s with
572Bs, but do not go the other way unless you have a different plate supply as
the 572 is good for around 2500 volts and the 811 for less. I think most 811
amps run 4 tubes and around 1500 volts.
Willis 'Cookie' Cooke, TDXS DX Chairman
K5EWJ Trustee N5BPS, USS Cavalla, USS Stewart
From: Tony Nightingale tony.nighting...@yahoo.co.uk
To: elecraft@mailman.qth.net
Sent: Thursday, March 27, 2014 6:16 AM
Subject: [Elecraft] K3 to KW 1000 amp
Hi, I have a K3 and want a simple way to use it to drive a KW 1000 linear
Amplifier. has anyone done this and how??
Tony G3ZPU
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