KPAM (860 kHz) is an AM radio station broadcasting a News/Talk format. Licensed to Troutdale, Oregon, USA, it serves the Portland metropolitan area. The station is owned by Pamplin Broadcasting-Oregon, Inc., part of the Pamplin Media Group, which also owns the Portland Tribune newspaper, as well as other publications and radio station 1550 AM KKOV. Studios and offices are on Southeast Lake Road in Portland and the transmitter is in the Parkway East neighborhood of Vancouver, Washington, across the Columbia River from Portland.
KPAM broadcasts at 50,000 watts non-directional by day, the highest power permitted by the Federal Communications Commission. But because 860 kHz is a Canadian clear channel frequency, KPAM must reduce power to 15,000 watts at night, and use a directional antenna pattern, to avoid interfering with CJBC Toronto, the Class A station on the frequency. Source