KUAM-TV (NBC) · Channel 8

Full-power stations are the main licensed broadcasters in a market. They may run the highest power from the tallest towers and are protected from interference, so they set the core of what you can receive.

At 3.5 kW effective radiated power, KUAM-TV runs more power than 2% of full-power TV stations nationwide (median: 273 kW). Stations on VHF channels are licensed at much lower power than UHF stations to cover the same area, so a low figure does not always mean a weak signal.

Its antenna sits 304 m above the average surrounding terrain, higher than 29% of full-power stations. Taller antennas see farther: this one's radio horizon is roughly 52 miles, beyond which the signal fades quickly.

We estimate a fair-or-better signal out to about 25 miles with an outdoor antenna. That area includes 22 cities and towns in our guide with about 184,000 residents, as far as Yigo Village, GU (14 miles).

KUAM-TV shares its transmitter site with K28HS-D, K32GB-D, K30HB-D and K36GJ-D. One antenna aimed at this site picks up all of them.

The nearest other NBC station in our data is KHNL in Honolulu, HI, 3,791 miles away. Viewers between the two can sometimes receive both.

NBC is one of the four big commercial broadcast networks. Local NBC affiliates carry the national morning show, evening news and primetime lineup, plus Sunday Night Football and, in Olympic years, the Games.