Ameritron AL-1500 buttoned up, final thoughts, and 65 in 1500 out legal limit keydown.

Описание: OK, I buttoned up the Ameritron AL-1500 and since it was still hooked up, I decided to give it a final talkthru and a final "legal limit" keydown before putting it away.
I do see that this one has an illuminated power switch. Turn the power on and the switch lights even in warmup mode. It's brother, the AL-1200 does not have that. There was also some questions about 65 max drive needed. The Amateur Radio legal limit is 1500 watts out. Since this was an FCC approved amateur amplifier, then its legal ratings are based on that 1500 max watts out. The 65 watts max drive comes from that's what is needed to make this amp hit the legal limit 1500 out point. With the AL-1200, it hits the legal limit maximum with 100 watts drive. Yes, these amps will do more, but anything over 1500 out is over the FCC limit.
As you can see in the early part of the vid, the AL-1500 and the 1200 share the same chassis. On the back of the 1200, it says"AL-1500, AL-1200, AL-82". Last, the manuals also say those 3 amps share the same chassis and HV power supply. They will all do legal limit+ if drove with more than that factory legal drive level. The 1500 will do the most, then the 1200, and last the 3-500z's. The main limiting factor of how many watts an amplifier can put out is the tubes plate dissipation. The 2nd limitation is the HV transformer VA or KVA (Volt Amps or Kilovolt Amps or Watts) rating. Going pass the tube rating will eventually pop the tube and going pass the transformer rating will eventually kill the transformer. Of course you can push past the ratings, but not for long. Remember that dummy load curve I showed in previous videos? If you are beating the curve, you are playing with fire.