In the end the biggest problem was grounds. As I said earlier this unit
had not been stored in the best environment and apparently it took it's toll
1) Ran a separate ground strap between the two output caps (this took us
from 600W to 750W)
2) Went through and cleaned and tightened EVERY ground connection that
had anything to RF (this took us from 750w to 900w)
3) The I/O RF connectors could use replacing . Perhaps some additional
ground strapping on the tank circuit caps?
Things that had little to no effect (on RF output)
1) they type of tank coil
2) the type of input tank (T or PI)
3) Direct grounding of the grids
4) Existing Filament and Plate chokes measure just fine at 50.1 MHz with
my VNA
Dave
NR1DX
--
Dave
Manuals@ArtekManuals.com
www.ArtekManuals.com
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