[NLRS] Article from 1987 CSVHFS Proceedings

tosca005 at umn.edu tosca005 at umn.edu
Sun Oct 16 20:05:34 EDT 2011


Can anyone on the reflectors get me a copy of the following article...
  A Solid State Power Amplifier for 5.7 GHz   by Richard M. Fogle, WA5TNY
... from the 1987 CSVHFS Proceedings?

A PDF file would be terrific, if you can scan the original directly to PDF. 
Otherwise, a photocopy mailed to me would be just fine also.

It seems that Richard created a PCB that could be used to make a nice, 
compact, high power (10 to 40 watts!) solid-state amplifier for this band. 
I don't know if Richard has made the boards available, or sufficiently 
high-quality artwork to duplicate it. And I don't know how widely available 
the IMFET devices he used are these days. But if the parts and boards can 
be found, it might make a nice winter project, even though I shouldn't have 
"cabin fever" this winter ('cause I'll be basking in the sun in San Antonio 
this winter).

He initially used IM6472-8 FET's, but these are designed for 6.4 - 7.2 GHz.
He also used IM5964-3 and IM5964-8 parts, which are designed for 5.9 - 6.4 
GHz.

Toshiba also used to make IM5359-8SL parts, designed for 5.3 - 5.9 GHz, 
which might work even better. (They also used to make the IM5359-35L, -45L, 
and -60L, a pair of which could generate 70, 90, or 120 watts respectively, 
but they are in a bigger package and so not a drop-in replacement for this 
board.)

Thanks in advance,
John, W0JT


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