Hi all:
I run an Ameritron al811h and when I use a 20w tune up drive level, with the amp controls preset as instructed, I only get 60w out.
I have to turn the plate and load along way counter clockwise to get 80w out. I noticed that my load pointer was past the 2 mark. I also got my XYL to read my grid and plate while I keyed the amp while advancing my 102s drive and it took about 45w to grid to 150 and the plate to 450. Something's not right. On 15m I get 500 and on 40/80 I get 600 all with 50 of drive. With 75 of drive I get over 600 on 15 and 740 on 40/80. I don't see how one of my tubes are bad with numbers like that. 20m? 240 with 75. I was suggested to check the SWR between the rig and amp but dunno how.
73:
Mike VO1AX