Stuart, you are at least as dogmatic as the professor who made me decide I
didn't care for an academic life. I fear you are getting old, young man.
An experiment to prove or disprove my statements is very easy to set up. All
you need is a solid state source source of RF, some means of measuring
transistor temperature rises, a dummy load, an antenna tuner that you can
deliberately mismatch, and a some assorted jumpers to go between the tuner
and the transmitter. The jumpers should vary from 1/8th to 1.0 wavelength.
And of course, a little time.
Check the temperature rise for 10 minutes with the tuner "straight through"
and an electrical half wave jumper. Let everything cool off. Set the tuner
for a deliberate 3:1 (150 ohm) mismatch. Repeat the temperature rise check.
Let cool. Repeat the experiment with various length jumpers, keeping track of
both the temperature rise and the jumper length in electrical wavelengths. Or
fractions thereof.
Build yourself a spread sheet with the results. The results may surprise you
- but they will not surprise those of us who have been around long enough to
have built a transistor from a germanium diode.
73 Pete Allen AC5E
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