Total posts : 45366
Ermi wrote: If 22.2 uW is, indeed, a “useful” Part 15 AM radiated power, it can be obtained within the restrictions of Section 15.219.
Just to note that in this NOUO, the measured field strength under 15.209, and the measured DC input power to the final r-f power amplifier in that transmitter under 15.219 BOTH were found to be non-compliant by FCC agents.
A later comment posted on this server states that an excessively long ground conductor was used, however the FCC citation didn’t include that finding. But if true, maybe the FCC thought that two causes for their NOUO were enough?
Power radiated by compliant Part 15 systems should not be any greater than the parameters permitted by Part 15 Rules as they now exist (by physics, not supposition).
As a point of fact, such parameters do not support the use of legal Part 15 setups as “community broadcast” services with coverage radii of “1-2 miles” as shown in the www statements of some Part 15 operators, and even those of the manufacturers of some well-known “Part 15” transmitters.