WMTJ

40.1/26.1: PBS
40.2/26.2: PBS Kids

WMTJ and WQTO
WMTJ: Fajardo–San Juan, Puerto Rico; WQTO: Ponce, Puerto Rico; ;
Channels for WMTJ	Digital: 15 (UHF); Virtual: 40;
Channels for WQTO	Digital: 19 (UHF); Virtual: 26;
Branding	Sistema TV
Programming
Affiliations	40.1/26.1: PBS; 40.2/26.2: PBS Kids;
Ownership
Owner	Ana G. Méndez University; (Sistema Universitario Ana G. Méndez, Inc.);
History
First air date	WMTJ: April 22, 1985; WQTO: August 14, 1986;
Former channel number	WMTJ: Analog: 40 (UHF, 1985–2009); Digital: 16 (UHF, 2002–2018); ; WQTO: Analog: 26 (UHF, 1986–2009); Digital: 25 (UHF, 2002–2019); ;
Former affiliations	Silent (2017–2018)
Call sign meaning	WMTJ: Méndez Television San Juan (station owner);
Technical information
Licensing authority	FCC
Facility ID	WMTJ: 2174; WQTO: 2175;
ERP	WMTJ: 175 kW; 3 kW (DTS); 55 kW (STA); ; WQTO: 700 kW;
HAAT	WMTJ: 854 m (2,802 ft); WQTO: 856 m (2,808 ft);
Transmitter coordinates	18°18′27.8″N 65°47′41.5″W / 18.307722°N 65.794861°W WQTO: 18°4′40.8″N 66°44′54.6″W / 18.078000°N 66.748500°W;
Links
Public license information	WMTJ: Public file; LMS; ; WQTO: Public file; LMS; ;
Website	sistematv.com

WMTJ (channel 40), branded Sistema TV, is a PBS member television station serving San Juan, Puerto Rico that is licensed to Fajardo. The station is owned by Ana G. Méndez University (UAGM). WMTJ's studios are located on UAGM's main campus in the Cupey district of San Juan, and its transmitter is located in the El Yunque National Forest.

WMTJ has one full-service satellite: WQTO (channel 26) in Ponce. WMTJ's digital signal was not on the air until a few months before the transition deadline. Installation of a digital transmitter for WMTJ had been difficult as the transmitter site is located in a remote tropical forest on national park land, requiring USDA Forest Service approvals of any new transmission tower.