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The photo I took of the FM30b Panel Readout was out of focus so I’ll have to try again, but it’s right next to me here on the computer and I have GOOD news… it DOES have a means of observing modulation level! More about that in a second.
Nate Crime, that swirly area composed of holes in the circuit board is, according to the manual, an actual coil! Later tonight I’ll look that up and quote the actual description.
O.K., with the panel set to “Volume” there is a visible volume level strip that can be “upped” or “downed,” and what I didn’t know earlier… there are symbols that appear based on level. When level is low a “-” (minus symbol) appears on the screen. When the volume is high enough to perk some audio a “g” flips on. When the audio clips/distorts a lower case “c” pops on. And when the transmitter is over-modulated an upper case “C” shows up, and it is time to back off.
And right over here, 10-feet 10-inches away on the desktop, the spectrum analyzer.
Having the tripod near the analyzer made the dBu jump up from 40 to 45.