My LPFM station in San Diego (Tucson, El Paso, Brownsville, Yuma) was only authorized 50 watts. Why?

This is due to an agreement with Mexico that predates the LPFM service. LPFM stations are limited to 50 watts within 125 km of Mexico. If you in this "strip zone", your antenna height should be at 42 meters height above average terrain to get the full 50 watts to the largest possible service area. Operating at lower antenna heights could limit your service area. Once you exceed 42 meters HAAT, then you will have to reduce power to meet the 5.6 km service contour limitation.

Last update:
2015-05-14 04:25
Michelle Bradley
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