[Elecraft] K3 to KW 1000 amp

[WILLIS COOKE]

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.nightingale at yahoo.co.uk>
To: elecraft at 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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