Well, you've uncovered another mistake I made. Sometime after my moving the FETs outside I got the cables mixed up inside. So, when I was monitoring the gnd FET above (post 114) I was actually monitoring the antenna FET & vice versa. I re-ran the tests from post 114 using the schematic below. Here are a few circuit stats and graphs.
Antenna FET:
Output began about 15V and leveled off about 22V over 30 min later. A little sensitive to my movements.
AC V is 2.23 V @ 60 Hz
Measuring specifically for frequency gives 0.0 Hz
Current through the antenna FET (4.7K resistor) = 22V/4680 Ω = 4.70 mV, 103.4 mW. See graph below.
Ground FET:
Output was steady about 17V.
AC V is 47 mV @ 120 Hz first time I've ever seen this freq.
Measuring specifically for frequency gives 0.0 Hz
Current through the antenna FET (4.7K resistor) = 17V/4680 Ω = 3.63 mV, 61.7 mW. See graph below.
(We always have the option of going back to having both fets inside and using just one cable out to the antenna. Hint, Hint.)
Antenna FET:
Output began about 15V and leveled off about 22V over 30 min later. A little sensitive to my movements.
AC V is 2.23 V @ 60 Hz
Measuring specifically for frequency gives 0.0 Hz
Current through the antenna FET (4.7K resistor) = 22V/4680 Ω = 4.70 mV, 103.4 mW. See graph below.
Ground FET:
Output was steady about 17V.
AC V is 47 mV @ 120 Hz first time I've ever seen this freq.
Measuring specifically for frequency gives 0.0 Hz
Current through the antenna FET (4.7K resistor) = 17V/4680 Ω = 3.63 mV, 61.7 mW. See graph below.
(We always have the option of going back to having both fets inside and using just one cable out to the antenna. Hint, Hint.)
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