Newbie here with a few questions regarding low power FM transmission.
Please excuse my possibnle improper use of vernacular. I just purchased
a 50mW FM transmitter for playing music in my home. It was built from a
kit and sold to a first owner, then sold to me... if that matters.

Since the FCC now uses the guideline of "250mV @ 3 meters" power
limitation, one needs to know what their transmission output is. What
sort of device would measure this? If I am pushing too much power, can
I shorten my antenna (currently 2 lengths of wire coming from the back
of the unit), in hopes to lessen the range? The unit is in my basement,
which reduces the effective range and possibility of interference with
licensed users, but it may still be exceeding the part 15 power output
limitations.

Second, if the FCC does "hunt you down" based on complaints, do they
issue a warning typically for first time offenders or do they go
straight for the $10,000 fine? Or is it purely based on what mood the
FCC investigators (or whatever they would be called) are in? I know
there are many variables with this, and that they would probably come
down harder if you were broadcasting sold advertisements, political
propaganda, etc.

Just wondering if I jumped into something to deep.

Thanks