Rowridge transmitting station
Channels listed by frequency -- Analogue and digital television
Table:
Frequency

UHF

kW

Service

System

471.25 MHz

21

500

Channel 4

PAL System I

489.833 MHz

23-

20

BBC (Mux 1)

DVB-T

495.25 MHz

24

500

BBC Two

PAL System I

513.833 MHz

26-

20

Arqiva (Mux C)

DVB-T

519.25 MHz

27

500

ITV1

PAL System I

530.000 MHz

28

20

Digital 3&4 (Mux 2)

DVB-T

546.000 MHz

30

20

SDN (Mux A)

DVB-T

551.25 MHz

31

500

BBC One

PAL System I

562.166 MHz

32+

20

BBC (Mux B)

DVB-T

570.166 MHz

33+

20

Arqiva (Mux D)

DVB-T

735.25 MHz

54

2

Solent TV

PAL System I

Using the following table and the supplementary paragraphs listed below.

Answer the following question: All of the services broadcasting at 500 kW sent how many frames per second ? Respond with the correct answer (omit explanations) in JSON format as {"answer": "YOUR ANSWER"}. Base your answer solely on the given information.

The hertz ( symbol : Hz ) is the derived unit of frequency in the International System of Units ( SI ) and is defined as one cycle per second . It is named after Heinrich Rudolf Hertz , the first person to provide conclusive proof of the existence of electromagnetic waves . Hertz are commonly expressed in multiples : kilohertz ( 103 Hz , kHz ) , megahertz ( 106 Hz , MHz ) , gigahertz ( 109 Hz , GHz ) , terahertz ( 1012 Hz , THz ) , petahertz ( 1015 Hz , PHz ) , exahertz ( 1018 Hz , EHz ) , and zettahertz ( 1021 Hz , ZHz ) . Some of the unit 's most common uses are in the description of sine waves and musical tones , particularly those used in radio- and audio-related applications . It is also used to describe the clock speeds at which computers and other electronics are driven . The units are sometimes also used as a representation of energy , via the photon energy equation ( E=hν ) , with one hertz equivalent to h joules .
Channel 4 is a British public-service free-to-air television network headquartered in Leeds , United Kingdom . The channel was established to provide a fourth television service to the United Kingdom in addition to the licence-funded BBC One and BBC Two , and the single commercial broadcasting network ITV . It began transmission on 2 November 1982 . Although largely commercially self-funded , it is ultimately publicly owned ; originally a subsidiary of the Independent Broadcasting Authority ( IBA ) , the station is now owned and operated by Channel Four Television Corporation , a public corporation of the Department for Digital , Culture , Media and Sport , which was established in 1990 and came into operation in 1993 . In 2010 , Channel 4 extended service into Wales and became a UK-wide television channel .
Phase Alternating Line ( PAL ) is a colour encoding system for analogue television used in broadcast television systems in most countries broadcasting at 625-line / 50 field ( 25 frame ) per second ( 576i ) . It was one of three major analogue colour television standards , the others being NTSC and SECAM . Almost all of the countries using PAL are currently in the process of conversion , or have already converted standards to DVB , ISDB or DTMB . This page primarily discusses the PAL colour encoding system . The articles on broadcast television systems and analogue television further describe frame rates , image resolution and audio modulation .
The British Broadcasting Corporation ( BBC ) is a British public service broadcaster . Its headquarters are at Broadcasting House in Westminster , London . It is the world 's oldest national broadcaster , and the largest broadcaster in the world by number of employees . It employs over 22,000 staff in total , more than 16,000 of whom are in public sector broadcasting . The total number of staff is 35,402 when part-time , flexible , and fixed-contract staff are included . The BBC is established under a Royal Charter and operates under its Agreement with the Secretary of State for Digital , Culture , Media and Sport . Its work is funded principally by an annual television licence fee which is charged to all British households , companies , and organisations using any type of equipment to receive or record live television broadcasts and iPlayer catch-up . The fee is set by the British Government , agreed by Parliament , and used to fund the BBC 's radio , TV , and online services covering the nations and regions of the UK . Since 1 April 2014 , it has also funded the BBC World Service ( launched in 1932 as the BBC Empire Service ) , which broadcasts in 28 languages and provides comprehensive TV , radio , and online services in Arabic and Persian . Around a quarter of BBC 's revenue comes from its commercial subsidiary BBC Studios ( formerly BBC Worldwide ) , which sells BBC programmes and services internationally and also distributes the BBC 's international 24-hour English-language news services BBC World News , and from BBC.com , provided by BBC Global News Ltd . In 2009 , the company was awarded the Queen 's Award for Enterprise in recognition of its international achievements . From its inception , through the Second World War ( where its broadcasts helped to unite the nation ) , to the 21st century , the BBC has played a prominent role in British life and culture .
DVB-T is an abbreviation for Digital Video Broadcasting - Terrestrial ; it is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997 and first broadcast in Singapore in February , 1998 . This system transmits compressed digital audio , digital video and other data in an MPEG transport stream , using coded orthogonal frequency-division multiplexing ( COFDM or OFDM ) modulation . It is also the format widely used worldwide ( including North America ) for Electronic News Gathering for transmission of video and audio from a mobile newsgathering vehicle to a central receive point . It is also used in the US by Amateur television operators .
BBC Two is the second flagship television channel of the British Broadcasting Corporation ( BBC ) in the United Kingdom , the Isle of Man and the Channel Islands . It covers a wide range of subject matter , but tends to broadcast more highbrow programmes than the more mainstream and popular BBC One . Like the BBC 's other domestic TV and radio channels , it is funded by the television licence , and is therefore free of commercial advertising . It is a comparatively well-funded public-service network , regularly attaining a much higher audience share than most public-service networks worldwide . Originally styled BBC2 , it was the third British television station to be launched ( starting on 20 April 1964 ) , and from 1 July 1967 , Europe 's first television channel to broadcast regularly in colour . It was envisaged as a home for less mainstream and more ambitious programming , and while this tendency has continued to date , most special-interest programmes of a kind previously broadcast on BBC Two , for example the BBC Proms , now tend to appear on BBC Four instead .
Arqiva /ɑːrˈkiːvə/ is a British telecommunications company which provides infrastructure and broadcast transmission facilities in the United Kingdom and the Republic of Ireland , along with commercial WiFi and smart meter facilities for Scotland and the north of England . The company headquarters is located at Crawley Court in the village of Crawley , Hampshire , just outside Winchester . Its main customers are broadcasters and mobile phone network operators , and its main asset is a network of over 1,000 radio and television transmission sites . It is owned by a consortium of investors led by CPP ( Canada Pension Plan ) and the Australian investment house Macquarie Bank . Arqiva is a patron of The Radio Academy . Through its NOW Digital subsidiary , it operates various local digital radio ensembles .
ITV is a British free-to-air television channel . Previously a network of separate uniquely identifiable regional television channels , ITV currently operates in England , Wales , Scotland , the Isle of Man , and the Channel Islands . From 2001 until 2013 , the primary ITV channel was called ITV1 . In 2004 , Granada Television acquired Carlton Communications to form ITV plc . ITV is the biggest and most popular commercial television channel in the United Kingdom . ITV , and its predecessor channels have contended with BBC One for the status of the UK 's most watched television channel since the 1950s . However , in line with other terrestrial channels , ITV 's audience share has fallen as a result of availability of multi-channel television in the UK .
Digital 3 & 4 is a consortium consisting of ITV plc , STV Group plc and the Channel Four Television Corporation , which operates a multiplex broadcasting from a number of transmitter sites in the United Kingdom , carrying television and radio channels , together with interactive services , from both ITV and Channel 4 . Unlike other multiplexes , the regional ITV broadcaster has control over which services are to be broadcast on their allotted amount of the capacity , leading to small regional differences across the country .
S4C Digital Networks ( SDN ) is a company that operates one of the six multiplexes of channels on digital terrestrial television in the United Kingdom . It is now wholly owned by ITV plc .
BBC One ( or BBC1 and BBC 1 ) is the first and flagship television channel of the BBC in the United Kingdom , Isle of Man and Channel Islands . It was launched on 2 November 1936 as the BBC Television Service , and was the world 's first regular television service with a high level of image resolution . It was renamed BBC TV in 1960 , using this name until the launch of the second BBC channel BBC2 in 1964 , whereupon the BBC TV channel became known as BBC1 , with the current spelling adopted in 1997 . The channel 's annual budget for 2012-13 was £1.14 billion . The channel is funded by the television licence fee together with the BBC 's other domestic television stations , and shows uninterrupted programming without commercial advertising . It is currently the most watched television channel in the United Kingdom , ahead of its traditional rival for ratings leadership , ITV . As of June 2013 [ update ] , the channel is headed by Charlotte Moore , the BBC 's Director of Content .
Solent TV was an independent not-for-profit television channel broadcasting on the Isle of Wight . It was transmitted from the Rowridge transmitter on the Isle of Wight on UHF channel 54 ( 735.25 MHz ) . It began broadcasting in October 2002 but ceased trading on 24 May 2007 .