WIOB

WIOB
Mayagüez, Puerto Rico;
Broadcast area	Puerto Rico area
Frequency	97.5 MHz (HD Radio)
Branding	Zeta 93
Programming
Format	Spanish Tropical
Subchannels	HD2: WRXD simulcast (Adult Contemporary); HD3: Viva 95 FM (Spanish variety format)
Ownership
Owner	Spanish Broadcasting System; (HD3 and W238CR leased to Aurio A. Matos Barreto); (Spanish Broadcasting System Holding Company, Inc.);
Sister stations	WRXD, WNVI, WTCV, WVOZ-TV, WVEO, WZNT, WZMT, WODA, WNOD, WMEG, WEGM
History
First air date	1956
Former call signs	WORA-FM (1956–1977); WIOA (1977–1985)
Technical information
Facility ID	8153
Class	B
ERP	50,000 watts
HAAT	853.0 meters (2,798.6 ft)
Transmitter coordinates	18°19′33.00″N 67°10′13.00″W / 18.3258333°N 67.1702778°W
Translator(s)	95.5 W238CR (Mayagüez, relays HD3)
Links
Website	www.zeta93.fm

WIOB (97.5 FM), branded on-air as Zeta 93, is a radio station broadcasting a Spanish Tropical format. Licensed to Mayaguez, Puerto Rico, the station serves the Puerto Rico area. WIOB was founded in 1956 by Alfredo Ramírez de Arellano y Bartoli as WORA-FM, the first FM radio station established in Puerto Rico. The station is currently owned by Spanish Broadcasting System Holding Company, Inc.^[1] WIOB's programming is also heard on booster station, WIOB-FM1 in San Germán.

WIOB broadcasts in the HD Radio format, and carries additional programming on two of the station's HD subchannels. In addition, WIOB-HD3's programming is simulcast on translator station W238CR 95.5 FM in Mayagüez, which is owned by Aurio A. Matos Barreto.

On February 1, 2018, WIOB left the Estereotempo Network after 41 years and switched to the repeater of the Zeta 93 Salsa Network.