|Rochester, New York|
|Channels||Digital: 22 (UHF)|
Virtual: 21 (PSIP)
|Affiliations||21.1: PBS (1970–present)|
21.4: PBS Kids
22.7: Classical 91.5
(WXXI Readout Radio on SAP)
|Owner||WXXI Public Broadcasting Council|
|WXXI (AM), WXXI-FM|
First air date
|September 6, 1966|
Former call signs
Former channel number(s)
21 (UHF, 1966–2009)
16 (UHF, 2003–2019)
Call sign meaning
|XXI = Roman numeral 21 (virtual channel)|
|ERP||195 kW (STA)|
273 kW (CP)
|HAAT||132.7 m (435 ft) (STA)|
152 m (499 ft) (CP)
Public license information
WXXI-TV, virtual channel 21 (UHF digital channel 22), is a Public Broadcasting Service (PBS) member television station licensed to Rochester, New York, United States. Owned by the WXXI Public Broadcasting Council, it is a sister station of National Public Radio (NPR) members WXXI (1370 AM) and WXXI-FM (91.5). The three outlets share studios at 280 State Street near downtown Rochester; WXXI-TV's transmitter is located on Pinnacle Hill on the border between Rochester and Brighton.
WXXI-TV entered the digital era in September 2003 when it signed on with Rochester's first full-power digital television signal.
The station's digital signal is multiplexed:
|Channel||Video||Aspect||PSIP Short Name||Programming|
|21.1||1080i||16:9||WXXI-HD||Main WXXI-TV programming / PBS|
(WXXI Readout Radio is on the subchannel's SAP)
Channel 21-4, now PBS Kids since February 1, 2016, was originally a digital standard definition simulcast of WXXI-TV's analog signal but is not currently transmitting, as 21-1 is identical.
WXXI-TV discontinued regular programming on its analog signal, over UHF channel 21, on June 12, 2009, the official date in which full-power television stations in the United States transitioned from analog to digital broadcasts under federal mandate. The station's digital signal remained on its pre-transition UHF channel 16. Through the use of PSIP, digital television receivers display the station's virtual channel as its former UHF analog channel 21.
As part of the SAFER Act, WXXI-TV kept its analog signal on the air until July 10 to inform viewers of the digital television transition through a loop of public service announcements from the National Association of Broadcasters. WXXI-TV had been awarded a $202,498 federal contract for an outreach initiative to help Rochester's over-the-air viewers prepare for the digital transition.
WXXI-TV's national public television productions include A Warrior in Two Worlds, Echoes from the Ancients, Out of the Fire, Albert Paley: Man of Steel and Flight to Freedom. WXXI-TV also produced Assignment: The World, a weekly current-events program for schools, which aired on approximately 100 public television stations nationwide, and was the nation's longest-running instructional television program. Due to funding cuts, it was canceled and its last episode aired on May 23, 2013.
ThinkBright, broadcast from 6 p.m. to 6 a.m. on 21-3 until the digital transition.
- RabbitEars TV Query for WXXI
- "DTV Tentative Channel Designations for the First and the Second Rounds" (PDF). Retrieved 2012-03-24.
- "UPDATED List of Participants in the Analog Nightlight Program" (PDF). Federal Communications Commission. June 12, 2009. Retrieved June 4, 2012.