I'd like to build a couple of RF amplifiers for different amateur radio bands. However, I've never messed with vacuum tube equipment before, and I have a question about the Fmax.
For most of the tubes I'm considering using, the datasheets have something like this:
Frequency for maximum ratings: 110Mc
http://w5jgv.com/4-400A_600M_amplifier/4-400A.pdf
My question is, what happens when you exceed 110Mhz? Is that the freq limit only with the maximum plate voltage/current? What about 75% plate voltage/current?
Anyone know how this works?
For most of the tubes I'm considering using, the datasheets have something like this:
Frequency for maximum ratings: 110Mc
http://w5jgv.com/4-400A_600M_amplifier/4-400A.pdf
My question is, what happens when you exceed 110Mhz? Is that the freq limit only with the maximum plate voltage/current? What about 75% plate voltage/current?
Anyone know how this works?