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Davids solution is valid…I see your eyes lighting up when you say “in addition to allowing a higher drive.” I wouldn’t be thinking more output by doing this. By eliminating the one driver tube you’ll have to increase you input wattage to see the same 750 you’re getting now? David’s solution is simply a way to work around having to use a low drive because you’re eliminating a driver tube. You’re still left with the high SWR issue and therefore the addition of a coil and trimmer capacitor is to match your radio (which is showing high SWR) to the input of the amplifier.

My take is simply this, you amplifier was working just fine prior to changing radios. In fact your amplifier is still working fine it’s the radio that’s not working fine. Put a tuner between your new radio and amplifier and you’ll be back to where you were…happy as a lark everything is working.

<blockquote data-quote="NightThumper" data-source="post: 766623" data-attributes="member: 51032">Davids solution is valid…I see your eyes lighting up when you say “in addition to allowing a higher drive.”&nbsp; I wouldn’t be thinking more output by doing this.&nbsp; By eliminating the one driver tube you’ll have to increase you input wattage to see the same 750 you’re getting now?&nbsp; David’s solution is simply a way to work around having to use a low drive because you’re eliminating a driver tube.&nbsp; You’re still left with the high SWR issue and therefore the addition of a coil and trimmer capacitor is to match your radio (which is showing high SWR) to the input of the amplifier.My take is simply this, you amplifier was working just fine prior to changing radios.&nbsp; In fact your amplifier is still working fine it’s the radio that’s not working fine.&nbsp; Put a tuner between your new radio and amplifier and you’ll be back to where you were…happy as a lark everything is working.</blockquote>

[QUOTE="NightThumper, post: 766623, member: 51032"] Davids solution is valid…I see your eyes lighting up when you say “in addition to allowing a higher drive.” I wouldn’t be thinking more output by doing this. By eliminating the one driver tube you’ll have to increase you input wattage to see the same 750 you’re getting now? David’s solution is simply a way to work around having to use a low drive because you’re eliminating a driver tube. You’re still left with the high SWR issue and therefore the addition of a coil and trimmer capacitor is to match your radio (which is showing high SWR) to the input of the amplifier. My take is simply this, you amplifier was working just fine prior to changing radios. In fact your amplifier is still working fine it’s the radio that’s not working fine. Put a tuner between your new radio and amplifier and you’ll be back to where you were…happy as a lark everything is working. [/QUOTE]

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