Total posts : 45366
BEV’s own ads say it has a range of 25,000 sq. ft., i.e., approx. 1 square mile — Ridiculous!! It would be in violation of FCC rules, and, further, I saw no designation anywhere which claimed it is Part 15 certified.
The ONLY FCC (U.S.) range and bandwidth criteria on frequencies within the FM BCB for determining the legality of a Part 15 FM broadcast band signal is pretty much engraved in granite. Word-for-word, it reads:
“15.239 – Operation in the band 88-108 MHz.
(a) Emissions from the intentional radiator shall be confined within a band 200 kHz wide centered on the operating frequency. The 200 kHz band shall lie wholly within the frequency range of 88-108 MHz.
(b) The field strength of any emissions within the permitted 200 kHz band shall not exceed 250 microvolts/meter at 3 meters. The emission limit in this paragraph is based on measurement instrumentation employing an average detector. The provisions in 15.35 for limiting peak emissions apply.”
… For a reasonably clear stereo signal, this works out to about 200 ft.