FM translator stations are subject to specific height (HAAT) and power limitations, which are regulated by the Federal Communications Commission (FCC). Here’s an explanation of these limitations:
No, it does not mean that circularly polarized antennas like the Penetrator are illegal. LPFM stations are allowed to use circularly polarized antennas, as specified in §73.816(a) of the FCC rules. This regulation permits LPFM stations to use antennas with horizontal only polarization, vertical only polarization, circular polarization, or elliptical polarization. Therefore, you can use circularly polarized antennas like the Penetrator without violating the rules.
The power level authorized for your LPFM radio station might be due to several factors. Here are some common reasons for low power authorization for LPFM (Low Power FM) stations:
In broadcasting, a “contour” refers to a specific geographic area or boundary on a map that represents the coverage area of a radio station’s signal at a particular signal strength level. Contours are typically used to illustrate the extent of signal coverage for regulatory and planning purposes.