Hello.
Want an amp that is as "Nasty" as they come?
As you are aware, analog 800MHz equipment is plentiful and cheap right now.
A lot of radios use an output module that is the complete final amplifier.
On all of the ones I have been able to find so far there is no filtering whatsoever, it depends on the signal to be clean and in the designed band.
So, what happens when we input an AM signal at 28MHz in?
Since this is class C, we get distortion, lots of it.
But, unlike the CB amps of old, where the transistors were only good to 30MHz, we get to go all the way up to 800MHz!
So, 28, 56, 84, 112, 140, 168, 196, 224, 252, 280, 308, 336, 364, 392, 420, 448, 476, 504.
My guess is that it keeps on but the older spectrum analyzer only goes to 512Mhz.
This was a sawtooth wave into a dummy load.