KNDU (NBC) · Channel 25

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 150 kW effective radiated power, KNDU runs more power than 42% of full-power TV stations nationwide (median: 273 kW).

Its antenna sits 394 m above the average surrounding terrain, higher than 55% of full-power stations. Taller antennas see farther: this one's radio horizon is roughly 58 miles, beyond which the signal fades quickly.

We estimate a fair-or-better signal out to about 65 miles with an outdoor antenna. That area includes 40 cities and towns in our guide with about 421,000 residents, as far as Walla Walla, WA (38 miles).

KNDU shares its transmitter site with K21OT-D, K32KY-D, KBWU-LD (Fox), K06QD-D, KVEW (ABC) and KTNW. One antenna aimed at this site picks up all of them.

The nearest other NBC station in our data is KNDO in Yakima, WA, 72 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.