[Elecraft] Elecraft K4 Vs. Flex 6400

jerry jerry at tr2.com
Mon Mar 7 13:47:30 EST 2022


On 2022-03-06 12:54, Kurt Pawlikowski wrote:
> Morgan,
> 
>     Wow! That's a LOT of very useful information. While my situation
> doesn't include an amp, I like your comment about not being able to
> "kill" the Mercury III's.

*** I actually ordered one of those.  Or so I thought.  It seems that my 
email
may not have gone through.  Long story, having to do with private email 
servers and reverse DNS.

   I was actually on the fence.  Because I've been working on a homebrew 
project I call the "Medium Linear".  It's a pair of MRF300's.  A 
wraparound cabinet from a Heathkit "Single Bander".  Big heatsink in the 
back with a Noctua fan.  Little touch screen.

   I am already thinking about the next project - a bigger linear.  The 
Medium Linear only does about 350W on SSB with low distortion.    I'm 
assured that this is about normal for a pair of MRF300's.  The Bigger 
Linear would use an unusual power supply - a *battery*.  I have a pair 
of Panasonic Lithium Ion battery packs.  Each one is rated about 50V, 
and can source a constant current of 100A.  I would keep it topped up 
with a 50V 20A supply, and should be able to do an honest kilowatt on CW 
and SSB from an ordinary 125VAC socket.

                    - Jerry KF6VB


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