I was attempting to measure the output of a small FM "microphone transmitter" I made that works in the regular FM broadcast band (around 108MHz). I attached a 50Ω load to the antenna output, then using an analog meter measured the AC voltage.
The pictures are crappy -- I was holding the camera in one hand and probes in the other. At best, the readings were generally 12V.
The meter is set to AC on the 50 volt scale. The photos shows the needles still around 5V because my grip wasn't great. But I think you get the point.
Question: is this generally a reasonable homebrew method of measuring output? Should I add some diodes and make a different load attachment before I take a reading? The meter also read 9dB at around 12V, but does that mean anything at all? And how does a thermos work?
No, I don't have an oscilloscope... I have a DMM and this analog thingee.
And yes, I know... I should get one.
:-D
Cheers,
KEØBRS