Editing SECAM (section)

=== Broadcast systems L, B/G, D/K, H, K, M ===
There are six varieties of SECAM, according to each of the [[Broadcast television systems#ITU standards|broadcast system]] it was used with:
* '''SECAM-[[CCIR System L|L]]''': Used only in [[France]], [[Luxembourg]] (only [[RTL9]] on channel 21 from [[Dudelange Radio Tower|Dudelange]]) and [[TMC (TV channel)|Télé Monte-Carlo]] transmitters in the south of France.
* '''SECAM-[[CCIR System B|B]]/[[CCIR System G|G]]''': Used in parts of the [[Middle East]], former [[East Germany]], [[Greece]] and [[Cyprus]]
* '''SECAM-[[CCIR System D|D]]/[[CCIR System K|K]]''': Used in the [[Commonwealth of Independent States]] and most parts of [[Central and Eastern Europe]] (this is simply SECAM used with the D and K monochrome TV transmission standards) although most Central and Eastern European countries have now migrated to other systems.
* '''SECAM-[[CCIR System H|H]]''':  Around 1983–1984 a new color identification standard ("Line SECAM or SECAM-H") was introduced in order to make more space available inside the signal for adding [[teletext]] information (originally according to the [[Antiope (teletext)|Antiope]] standard). Identification bursts were made per-line (like in PAL) rather than per-picture. Very old SECAM TV sets might not be able to display colour for today's broadcasts, although sets manufactured after the mid-1970s should be able to receive either variant.
* '''SECAM-[[CCIR System K|K]]''': The standard used in [[Overseas France|France's overseas possessions]] (as well as African countries that were once ruled by France) was slightly different from the SECAM used in [[Metropolitan France]]. The SECAM standard used in Metropolitan France used the SECAM-L and a variant of the channel information for VHF channels 2–10. French overseas possessions and many [[African French|French-speaking African]] countries use the SECAM-[[CCIR System K#System K1|K<sup>1</sup>]] standard and a mutually incompatible variant of the channel information for VHF channels 4-9 (not channels 2–10).
* '''SECAM-[[CCIR System M|M]]''': Between 1970 and 1991, SECAM-M was used in [[Cambodia]],<ref>{{cite book |url=https://www.cisco.com/c/dam/en/us/solutions/service-provider/industry/cable/pdfs/broadband-data-book.pdf |title=Broadband Data Book |date=August 2019 |publisher=Cisco |pages=31 |access-date=17 January 2024 |archive-url=https://web.archive.org/web/20230321004717/https://www.cisco.com/c/dam/en/us/solutions/service-provider/industry/cable/pdfs/broadband-data-book.pdf |archive-date=21 March 2023 |url-status=live}}</ref> [[Laos]], and [[Vietnam]] ([[Hanoi]] and other northern cities).