NB: What I know about solid state power amps can be written down on less than one sheet of paper. That said, Motorola's engineering bulletin EB104 seems to lay out the design for a fairly clean 600 w
One near by lignting strike and all 16 transistors are gone. Besides they don't glow. 73 Bill wa4lav NB: What I know about solid state power amps can be written down on less than one sheet of paper.
design for a fairly clean 600 watt HF amplifier based on 4 MRF150 transistors. combiner that, with some modification, should be able to handle 1.5 KW. Isn't that the same information that the R. F.
one sheet of paper. for a fairly clean 600 watt HF amplifier based on 4 MRF150 transistors. that, with some modification, should be able to handle 1.5 KW. watt amp modules from EB104, you would have
Want to see what that would look like? Look at the Yaesu VL-1000 ... Not quite 1.5k out ... but does includes power supply and the needed RF output filtering, and everything else ... it's a 8x MRF15
As long as we're just designing this thing on paper, why wouldn't it make sense to design for a 50-ohm output impedance, forget the low pass filters, and instead include a low-pass-type autotuner per
filters, Solid state amps do not like high Q networks located very near the output devices. Best to have a multi-section low-Q filter and then put the high-Q stuff after that, and hopefully through
Most designs are 50 ohms in/out. You need a broad band filter that has a sharp cut-off above the band in use. Then you can add your antenna tuners etc. after the filter. (((73))) Phil K5PC
I like the idea of an external tuner with some harmonic rejection. It sounds like the high power PA's need to see a broadband 50 Ohm match. We might consider a weak diplexor that transfers power on t