[NLRS] SB-200 on 6m?

[Ronald Bergantzel]

Hello !! I would take a look at the "AMPS" reflector
and see what the MANY comments are about this specific
modification ...... Also , make sure that the amp is
stable up thru 10 meters ( can we say 'aged' grid
resistor replacement ? ) There is a few tricks on
performing this mod and there are several guys out
there buying alot of SB200 's and performing the
CORRECT 6m mod for a few bucks ( good luck on getting
'free' mod info )..... If I was concerned on keeping
this amp as a classic , I would not modify it - the
572 tubes used in it are at their upper freq limit -
Why not grab a Russian GS35 tube and homebrew an
amplifier for 6 m ??  It would 'loaf' along at the
legal limit or more. I am currently building a GS35
for 144 mhz and have the 4 kv pwr supply and FT897
'interface' already built. I will be tackling the
amplifier cavity this week ( aluminum metal work is
here )..... Good Luck on your 6m project - I am trying
my hardest to maybe be up at Grandma's farm (
KA0RYT/Portable  EN35 ) for the UHF contest ( only on
432 ) and maybe run up the road north to EN 36 / EN26
to hand out those grids too. NO PROMISES - YET . I
hope to work several of you fellows then -   73, Ron
Bergantzel KA0RYT 
--- KBØNLY <kb0nly at mchsi.com> wrote:

> 
> 
> Anyone here have a SB-200 modified for 6m use?  I
> would love to hear from 
> you, especially if you did the modifications
> yourself.  I have been reading 
> through some info regarding the modification of one,
> replacing 10m with 6m 
> and still having the other HF bands on it as well.
> 
> Any tips, tricks, changes made with experience
> regarding this mod would be 
> helpful as well.  Thinking about putting one into
> service for 6m if it's not 
> too hard, I also want to avoid butchering a classic
> by doing a clean mod 
> that could be reversible if necessary later on.
> 
> 73,
> 
> Scott
> 
> 
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