[Amps] Overdrive protection

[Jim W7RY]

Duh...
Why not just use the RF PWR adjustment on the front of the transceiver and
save all that costs and wasted heat dissipated by the attenuator.

"Discipline" is the keyword. With proper drive power management, most
linears will operate trouble free for decades.

I have a Clipperton-L (1980) with the original tubes. I also have a
homebrewed 4-400(2) that I built in 1979. I did not even bother to include
an ALC circuit. Both have been trouble free.

    73s de Jim
       W5IFP

Agreed!  The older amps, SB200, 220 etc. don’t have an adjustment control 
for their ALC which makes ALC in those amplifiers useless. Newer Henrys, 
TL-922 and Ameritron at least have adjustment pots... Come to think of it 
the Drake L4 also has an adjustment.

But, I don’t hook any of them up. My Icom 7600, 7200 and 751A don’t have 
power overshoot issues. If they did, the grid current overdrive circuit 
trips on my G3SEK triode board trips before the first dit even gets out.

73
Jim W7RY