[AMPS] Kenwood TS450 & SB-200??

[Rich Measures]

>
>Rich,
>
>Thanks for the note.  

ur welcome.

>Been learning fast.  If the problem is simply (I
>doubt it...) the relay, why not just swap out the old one with something
>faster?  

I know of no multiple pole 1500 RF watt capable relay that switch in 2mS. 
 

>Why all the changes to the grid-to-ground circuit?
>
The high speed switching circuit is designed to be powered by a (100v to 
160v) Positive source.  The SB-200's mickeymouse T/R bias switching 
circuit uses a negative supply.  For the high speed switching mod, the 
SB-200 needs to be converted to the standard configuration using a 
positive supply, like the SB-220.  
-  later, Tom



Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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