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Brian G,

If you add the input tune control to the amplifier as it is, it will allow you tune the input section of the amplifier to a better match to your Stryker. Not unreasonable to expect less than 1.5:1.


If you eliminate the first driven tube and drive the next section (2-8950's) and add a tuning coil* to that section, it will allow a larger drive (since now you would be driving 2-8950's instead of 1-8950) and allow a tunable input to that 2 tube section. It may or may not take the full output power from your Stryker but should make the amplifier less prone to gain issues.


(*The amplifier may include a tunable Pi network for the 2 tube section. I will look at the schematic and see)



A simple tuned input circuit below. The black coax goes too the driver tube (8950 in this case)  cathode, the tan coax comes from the relay. There is a $5.00 trimmer capacitor and about 6 inches of  14ga solid wire and 2 wire terminals added.


[ATTACH=full]45525[/ATTACH]



73

David