I'm sharing the info that was included with my recent order from HG
the datasheet as bogus! If this is true, the Chinese have just developed the most powerful RF bipolar transistor ever made by a long shot. Not something we would expect from HG.
Wow! That RCI 69 has the worst 2nd harmonic content I've ever seen. This is the exact problem I've been talking about using power supply transistors in linear amplifiers. They are so filthy (even when not self oscillating) that they are unusable to those that know better. Imagine stuffing that signal into a larger amplifier? That's probably one of the reasons they don't make any base radios using such inferior amplifier stages. Every last one of them has been discontinued.Well, that 360 watts and the IMD THD spec was not military -18 dB? Oh geez, no wonder it's 360 watts - it's pumping out 2nd, 3rd - 4th - ad infinitum...all totaled together?
See This Thread: link...RCI 69 base
Now this (at link) is their (Rangers') MOSFET RT1, RT2 and RT3 series, but if you had what Smokin' Joe found on their outputs - I can see where someone said - "that? Yeah - that's fine..."
Sure...Why Not - Not?
It's the literal - Cut 'n Paste format, that grinds me...
And it can't stand the light of day...
Too many things wrong with that picture...
As I think about this more, I wonder how much of that harmonic content is coming out of the radios "wonderful" MOSFET final stage to begin with? Do they even put a 54 megahertz trap in this stage anymore? Is it tuned at 54 or "peaked" for watts? Is there any chance that spectrum analyzer is being over driven on its input, because that is a horrendous result?