| KWBY | |
| City: | Woodburn, Oregon |
| Area: | Portland metropolitan area |
| Branding: | La Pantera 940 |
| Frequency: | 940 kHz |
| Airdate: | (as KWRC) |
| Format: | Regional Mexican |
| Power: | 10,000 watts day 200 watts night |
| Class: | D |
| Licensing Authority: | FCC |
| Facility Id: | 165 |
| Coordinates: | 45.1759°N -122.8504°W |
| Former Callsigns: | KWRC (1964–1988) |
| Owner: | Bustos Media |
| Licensee: | Bustos Media Holdings, LLC |
| Webcast: | Listen Live |
| Website: | laradioportland.com |
KWBY (940 AM) is a commercial radio station broadcasting a Regional Mexican format. It is licensed to Woodburn, Oregon, and serves the Portland metropolitan area. It is owned by Bustos Media, through licensee Bustos Media Holdings, LLC.
By day, KWBY is powered at 10,000 watts, using a non-directional antenna. But to protect other stations on 940 AM from interference, at night it greatly reduces power to 200 watts. Programming is heard around the clock on 250-watt FM translator K227DU at 93.3 MHz in Salem.
The station signed on the air on .[1] Its original call sign was KWRC. It began as a daytimer station, powered from dawn to dusk at 250 watts but required to go off the air at night. It aired a middle of the road (MOR) format of popular music, news and sports.
In 1988, it changed its call letters to KWBY. It later switched to Regional Mexican music with Spanish-language programming for Oregon's growing Hispanic population.