MHz Networks is a Northern Virginia based independent, non-commercial educational broadcaster operated by Commonwealth Public Broadcasting Corporation that covers the city of Washington DC and the surrounding area. The legal broadcast callsigns for the two stations of MHz Networks are WNVC (channel 24) and WNVT (channel 30). Rebranded as MHz Networks, WNVC is licensed toFairfax, Virginia with studios in Falls Church, Virginia  and WNVT is licensed in Goldvein, Virginia, and shares TV studio facilities in Falls Church.

History 
WNVT first signed on March 1, 1972 on Channel 53 as a public broadcasting independent of Public Broadcasting Service (PBS). On June 6, 1981 Channel 56 signed on as a similar station (as WIAH) and in 1982, changed its call letters to WNVC. Since channel 56 signed on, the two stations were operated from the same Northern Virginia studios, and were run as sister stations. The WNVT studios were originally at Northern Virginia Community College. When the station was under construction, the school offered an associate of arts in broadcast engineering technology. Prior to WNVT, channel 53 had a brief experimental transmission from somewhere in downtown Washington, D.C.

In 2001, the two stations became known as MHz Networks, with WNVC becoming MHz and WNVT becoming MHz2. In 2003, WNVT became digital-only on channel 30. On September 1, 2008, WNVC ceased broadcasting in analog permanently and took the digital broadcast silent to perform technical modifications. WNVC has a construction permit (now on-air) to relocate its digital signal to channel 24, after WUTB in Baltimore vacated its analog signal on June 12, 2009.
In 2010 they started offering a Video on Demand service with paid premium and free service through the Roku Digital Video player.

In July 2009, Washington, D.C. TV stations became a test market for Mobile DTV, and WNVT was one of the participating stations.

Like all of the DC-area Mobile DTV broadcasters, WNVC-TV commenced ATSC-M/H broadcasting on February 27, 2011. WNVC-TV also has two Mobile DTV feeds, one of subchannel 30.1 (MHz Worldview), labelled "MHz 1", and a feed of sister station WNVT's 30.7 (France 24, showing up as 30.2), labelled "MHz 7", broadcasting at 3.67 Mbit/s.

Programming 
Channel numbers given are digital virtual channels, with six being transmitted by each station. Both stations feature international programming 24 hours daily.

WNVC
MHz1 (30.1): MHz Dc (in English or with English subtitles)
MHz2 (30.2): NHK World (in Japanese and English)
MHz3 (30.3): CCTV News (in English)
MHz4 (30.4): RT (in English)
MHz5 (30.5): Al Jazeera English
MHz6 (30.6): CCTV Documentary (in English and with English subtitles if possible)

WNVT
MHz7 (30.7): France 24 (in English)
MHz8 (30.8): RT en Español (in Spanish)
MHz9 (30.9): Arirang (in English)
MHz10 (30.10): Ethiopian Television (in Amharic)
MHZ 11 (30.11): VTV4 (in Vietnamese)
MHZ 12 (30.12): MHz WorldView
Services formerly offered 
These digital subchannels are no longer offered:
MHz3 (30.3): Metro Chinese Network; replaced by CCTV News.
MHz5 (57.3): Beste van Vlaanderen en Nederland (in Dutch and English); replaced by Al Jazeera English.
MHz8 (57.4): Macroview TV  ; replaced by Nigerian Television Authority.
MHz8 (30.8): Nigerian Television Authority ; replaced by Ethiopian Television.

MHz8 (30.8): Ethiopian Television ; replaced by RTV Spanish and later returned to MHz10
MHz6 (30.6): SABC News International ; replaced by MHz Native
MHz6 (30.6): MHz Native'; replaced by CCTV Documentary
MHz9 (30.9): VTV4 (in Vietnamese); replaced by Arirang; moved to a 12-hour slot on MHz6
MHz10 (30.10): Euronews (in English); replaced by Ethiopian Television; moved to a 12-hour