DWMA-TV explained

PTV-4 Naga
Callsign:	DWMA-TV
City:	Naga City
Branding:	PTV-4 Bicol
Analog:	4 (VHF)
Digital:	46 (UHF) (ISDB-T) (Test Broadcast)
Virtual:	4
Subchannels:	See list
Affiliations:	PTV
Founded:	1972
Location:	Naga, Camarines Sur
Owner:	People's Television Network, Inc.
Callsign Meaning:	DWMA
Former Affiliations:	KBS/RPN (1972-1986)
Former Channel Numbers:	8 (1972-2012)
Licensing Authority:	NTC
Power:	Analog: 5,000 watts Digital: 1,000 watts
Website:	www.ptni.gov.ph

DWMA-TV, channel 4, is a regional television station of Philippine television network In Southern Luzon Owned Operated People's Television Network. Its transmitter is located at Pacol Road, Brgy. San Felipe, Naga, Camarines Sur.^[1]

History

1972 - DWMA-TV channel 8 was launched by Kanlaon Broadcasting System.
1975 - KBS was formally re-launched as RPN, the acronym for its franchise name, Radio Philippines Network.
1986 - Following the People Power Revolution on which it was taken over by pro-Corazon Aquino, the station was reopened as People's Television (PTV).
March 26, 1992 - President Cory Aquino signed Republic Act 7306 turning PTV Network into a government corporation known formally as People's Television Network, Inc. (PTNI).
July 16, 2001 - Under the new management appointed by President Gloria Macapagal Arroyo, PTNI adopted the name National Broadcasting Network (NBN) carrying new slogan "One People. One Nation. One Vision." for a new image in line with its new programming thrusts, they continued the new name until the Aquino administration in 2010.
October 6, 2011 - People's Television Network, Inc. (PTNI) became a primary brand and the branding National Broadcasting Network was retired.
2012 - PTV Naga moved its frequency to channel 4.
2019 - PTV 4 Naga started digital test broadcasts on UHF Channel 46.

UHF Channel 46 (665.143 MHz)

Channel	Video	Aspect	Short name	Programming	Note
4.01	1080i (sometimes 720p)	(sometimes 4:3)	PTV HD1	PTV Naga (Main DWMA-TV programming)	Test Broadcast
4.02			PTV HD2	PTV
4.03			PTV HD3	Blackscreen
4.04			PTV 1seg		1seg