[TowerTalk] AL-811 with Svetlana 572B's

[Drax Felton]

Does anyone have instructions on what needs to be done to replace the 811A
tubes in an Ameritron AL-811 amplifier when Svetlana 572B tubes?

 

I've seen on the Internet where it mentioned the Svetlana brand wasn't a
direct drop in replacement for the 811A tube.

 

My amp seems to have high input SWR now that I dropped in the Svetlana's and
seems to develop a lot of power, 500 watts, at only 10-15 watts drive.

 

Kb3X