Talk:Call sign

Untitled
This article has been renamed as the result of a move request. From Call Letters to call sign. Call Letters was obviously wrong. If we need to decide between call sign and callsign, we can propose another move and then discuss between those two apparently equally correct options. –Hajor 19:38, 13 October 2005 (UTC)

See below.

WOWT
In the American exceptions section isn't WOWT Omaha reaching also Lincoln further west then the San Antonio station? — Preceding unsigned comment added by 95.49.209.18 (talk) 15:45, 19 January 2013 (UTC)


 * San Antonio is still a little farther west than Lincoln. But it wouldn't matter anyway - It's the city of license which counts, not the farthest reaches of where the signal can normally be received.  87.114.54.197 (talk) 16:09, 6 May 2014 (UTC)

Preferred name
In U.S. dictionaries, the term is two words: call sign. Furthermore, the preferred term in dictionaries is call letters. I propose this article be moved to Call letters, and that Callsign and Call sign be redirected to Call letters. Kingturtle 18:37 May 10, 2003 (UTC)

Or is this article about ham radio licenses? Kingturtle 18:38 May 10, 2003 (UTC)


 * Well, it seems to be about both. And never heard Call Letters used in reference to an amateur radio designation. Also, Google finds a million and a half uses of callsign and only 237,00 uses of "call sign".  It also offers to correct call sign to callsign. OTOH, the form prefered by the American Radio Relay League is call sign.  Still, I'd counsel leaving things as they are. Bill 15:41 6 Jun 2003 (UTC)


 * I really prefer tactical designation to tactical callsign. Uniqueness is an important characteristic of a callsign. Unless there's strong objection, I'm going to rewrite the article to observe this distinction. Bill 16:16 6 Jun 2003 (UTC)

Move proposal: Callsign (radio) &rarr; Call sign
Call sign was an unnecessary disambig page. I merged it with Callsign (radio) which had the bulk of the content. I think the main article should be at Call sign. (If someone strongly prefers Callsign, I won't argue much.) -- agr 21:50, 28 Feb 2005 (UTC)
 * I prefer callsign. (Why would I call a sign?)  – radiojon 04:29, 2005 Mar 1 (UTC)
 * Support (I prefer call sign)   &mdash;User:Mulad (talk) 07:15, Mar 2, 2005 (UTC)
 * Neutral: It is fair to note that www.dictionary.com redirects "call sign" to "call letters". (My last vote on RM, since i'm not wasting my time finding stuff on talk pages...relish it folks...don't say I didn't warn you!) &mdash;ExplorerCDT 17:45, 2 Mar 2005 (UTC)
 * Support I don't believe that "callsign" is a word. &mdash;Michael Z. 2005-03-14 00:42 Z 

Looks like an old copy/paste move from callsign to callsign (radio). Page histories need to be merged but they both use block-compression. Listed on WP:RM.violet/riga (t) 00:28, 5 Mar 2005 (UTC)
 * Temporary fix done. violet/riga (t) 21:00, 18 Mar 2005 (UTC)

OK, I have done a permanent fix. This was somewhat complicated by the fact that since then, someone had done yet another cut and past move on the article. So, in a personal first, I merged three different histories into one! Sigh, now I discover that there were three separate talk pages, too. OK, I already merged one in, guess it's time to fold in the last one. Noel (talk) 03:26, 30 September 2005 (UTC)

Requested move
I have noted on the moves page that the proper title of this article should be Call sign, not Call letters (couldn't make the move myself -- got caught up in a tangle of redirects I didn't know how to deal with). The reasoning is that "call letters" are a special case of a general "call sign", mostly as applied to broadcast radio and TV stations in North America. In any case, there are other uses of the term "call sign" mentioned in this article that have nothing to do with letters, making the title of the article misleading. Haikupoet 04:20, 28 September 2005 (UTC)


 * Call sign sounds good. –Hajor 20:27, 28 September 2005 (UTC)
 * Is Call sign correct? Wouldn't it be Callsign? I would Support Callsign. (note mine -->) -- N5UWY/9 - plaws 01:07, 29 September 2005 (UTC)
 * I'd say it comes down to a matter of personal preference. I do think one should be a redirect to the other, whichever way it goes. Haikupoet 01:40, 29 September 2005 (UTC)
 * Hey, I used to have one of those... A quick check of their front-page websites (uh... "web sites"?) shows the ARRL using "call sign" and the RSGB using "callsign". ITU's Termite database seems to prefer "call sign". I'd prefer the two-word version, but either would be better than the current location, with its capital and all. –Hajor 02:15, 29 September 2005 (UTC)
 * I'd be willing to go along with the ITU! It should be noted that there are well over 500 links to the various previous flavors, so we may need help from an experienced Wikipedians (of which I am not) --N5UWY/9 - plaws 02:22, 29 September 2005 (UTC)
 * Here's some data on the usage levels of various terms, from a web search:
 * about 2,550,000 for "callsign"
 * about 2,370,000 for "call sign"
 * about 801,000 for "call letters"
 * IMO Call Letters is out, it doesn't follow the Wikipedia standard for article titles (no capital letters unless it's a proper name, which this isn't). Noel (talk) 02:46, 30 September 2005 (UTC)


 * Call Letters is wrong per wikipedia convention, which is why someone proposed moving it to Call letters ... HOWEVER, as we've all noted, it should be Call sign (ITU form) or Callsign (apparently most popular form). Everything else (and a bunch more) will redirect to whatever we decide. --N5UWY/9 - plaws 19:18, 30 September 2005 (UTC)
 * Well, I'd say in this case ITU usage trumps everything else, as they're the ones responsible for allocating the damn things anyway. Haikupoet 18:01, 1 October 2005 (UTC)
 * There's some background reading on the callsign vs. call sign phenomenon at English compound. See also Talk:Copy editing (wrt copy editors, copy-editors, and copyeditors) and here for thoughts on website vs. web site. Essentially, there's pressure on such compounds to join up, and that pressure's at its highest among the initiates (hams with callsigns, webmasters with websites); conversely, the process tends to be less far along among the general lay public (and actively resisted by the Competent Authorities). –Hajor 19:27, 4 October 2005 (UTC)


 * As I've said, I don't much care one way or the other (call sign or callsign), and I have two ... but Call letters is wrong.  I say let's just move it!  -- N5UWY/9 - plaws 01:36, 5 October 2005 (UTC)

Discussion
moved from WP:RM:
 * I would go so far as to suggest moving it back to Call sign or Callsign -- it's a more general term (call letters being a special case of call signs; not all call signs are call letters per se). Call letters should be a redirect -- I tried to make the move myself but got caught up in a morass of redirects. Haikupoet 04:15, 28 September 2005 (UTC)
 * Should be Callsign. --N5UWY/9 - plaws 01:23, 29 September 2005 (UTC)

richard english is so whitty —Preceding unsigned comment added by 128.163.165.168 (talk) 21:34, 19 July 2010 (UTC)
 * callsign is most proper. Using any capital letters is the title is absolutely completely wrong.  Using "call letters" is really only apropos if there are no numerals, and the use of that term may have originated in North American broadcasting (i.e. CBFT, WABC, KCBS, XERF), where only letters are used for main stations.  Therefore "sign" is better than "letters".  A space in the middle is at least tolerable, but "callsign" gives 2,730,000 responses in Google, whereas "call sign" gives 1,780,000.  –radiojon 19:11, 13 October 2005 (UTC)

Aussie Callsigns
Can i ask where the information about "VL" being part of radio call letters in AU came from? 210.49.196.232 11:42, 17 Aug 2003 (UTC)

Yes, I'd like to know this too. It has the ring of authenticity to it, but I've spent a fair amount of effort milking google to find some evidence for it, without any result so far. Bill 19:42, 23 Oct 2003 (UTC)

VL is one of the international callsign prefixes assigned to Australia, and the one which the government assigned to broadcast stations. (VK is still used for amateur radio licences.) The history of Radio Adelaide, which began with callsign VL5UV (now just 5UV), can be found by searching Google for "VL5UV". Apparently, since Australia has no neighbouring countries, the ABA (Australian Broadcasting Authority) has allowed stations to drop the VL since then. –radiojon 00:33, 2003 Oct 24 (UTC)

Television vs Radio
Does anyone know of any reason why Television call sign diverts here? Australia has a very different Television call sign format than radio call sign. --Chuq 01:40, 2 Mar 2004 (UTC)


 * Probably because most countries that assign callsigns to television stations don't. 20:41, 15 Oct 2004 (UTC)

The description of Australian television callsigns doesn't match what my older references show. When did the system change? (My old references, like the '94 WRTH, show callsigns in the "FM radio" format, so that the TEN station in Perth might by 6TEN, etc.) 18.26.0.18 07:26, 1 Jan 2005 (UTC)
 * Interesting.. I've read a lot of sites covering Australian TV history and none of them show or use any format such as 6TEN.  Can you post a more complete list?  I'll go googling for details! -- Chuq 00:43, 2 Jan 2005 (UTC)
 * I just checked my '94 WRTH and it shows the format you describe. So either I was utterly confused, or I'm remembering something I saw in the '88 WRTH, which I don't have a copy of.  18.26.0.18 05:29, 5 Jan 2005 (UTC)

US Television Callsigns
Can someone please explain the rules for broadcast television callsigns in this "Callsign" article? For example, some television stations in the US have multiple numbers, while some have none. Again, for example, KHOU in Houston has no numbers, while W63AU has two numbers. --64.128.27.82 (talk) 19:00, 7 August 2012 (UTC)
 * The TV callsigns incorporating numbers are for translator stations, a.k.a. repeaters or relays, which simply receive a signal from a main station and rebroadcast it. The numbers are assigned based upon the output channel of the translator, with a leading zero if necessary to make two digits.  Thus W63AU is a translator for some other transmitter which rebroadcasts on channel 63, while K05AA would be a translator rebroadcasting on channel 5.   87.114.54.197 (talk) 21:34, 5 May 2014 (UTC)

Maritime Radio
Doesn't ships have callsigns, too? Scriberius 18:19, 2005 May 6 (UTC)
 * Some do, but not all. The smallest ships in the U.S. (some pleasure craft) don't have to even have radios. The big ones have broadcast-style 4-letter callsigns.Stereorock (talk) 14:13, 7 May 2014 (UTC)

Why????
This article doesn't seem to answer my question: why do U.S. stations have these ugly names when we get on fine without them in the UK? What is the point? Who made the decisions that led to this state of affairs and why? They aren't exactly snappy marketing tools. Please explain in the ariticle. &mdash;The preceding unsigned comment was added by 82.35.34.11 (talk • contribs) 02:15, 28 July 2005.
 * Law. And way, way more of them than the UK has - some areas could have 7 or 8 terrestrial stations (although the combined programming quality would barely touch BBC1 alone...) --Kiand 15:09, 30 November 2005 (UTC)
 * Try 30 to 50&mdash;or 90–100 in the top three markets, for a nationwide total of over 12,000. 121a0012 02:14, 23 February 2006 (UTC)
 * That doesn't really answer the question very clearly I'm afraid and there is still nothing in the article. 62.31.55.223 11:20, 12 May 2006 (UTC)
 * Because many American radio stations tend to use the same frequencies throughout the country.  Our country is large enough to where we can have multiple stations in the same country use any arbitrary frequency (Say 105.1) and they won't interfere with each other in other markets.  A radio station simply can't be named "105.1" in the U.S. because 105.1 would be WGVX in Minneapolis/Saint Paul, WWPR in New York City, KCQQ in the Quad Cities and WMGC in Detroit.  Those call letters are to differentiate between the stations, since there are only so many frequencies on the radio dial that the stations in this country can use.


 * In the UK, if you were to have 2 stations on the same frequency trying to serve different markets, they'd clash with each other, since markets in the UK are so close together. Stateside, major markets are very far away from each other.  Also, the concept of "local radio" here is needed much more due to our more extreme weather and other warnings.  An announcement for a Tornado or a Severe Thunderstorm warning over a national network would simply take up too much time and only affect a minor part of the TV's audience.  With a local station, they can warn the appropriate demographic.

Hope that helps. ColdRedRain (talk) 20:31, 17 July 2008 (UTC)
 * Plus, in the 1920s, didn't all countries use callsigns of one form or another. I imagine there was a policy change at the ITU which allowed stations to not use callsigns. But, remember in the U.S., our radio history has more of an emphasis on local stations rather than, say, the U.K., which only had the BBC-a network for a majority of the time. NBC Red didn't own WJAR in Providence, Rhode Island, but WJAR was still an affiliate. The BBC as I understand it was the only game in town so without local opt-outs, IDing all of the stations on the network would be cumbersome. I assume there was a policy change at the ITU but since in the golden age of radio, callsigns were much a part of a station's identity as the network (not all stations were part of a network either. Some educational stations like KUOM were locally programmed) so there was a reason to retain them. The F.C.C. has never done away with that requirement and I hope they never do. It allows for a different form of identity than, say, all A.M. stations being called "News/Talk XXX0" like a lot of U.K. F.M.s seem to be "Something F.M." (which I find to be ugly, boring names). Had the U.K. had a similar history (say the Beeb remained a commercial broadcaster), with several networks but not providing around the clock coverage and stations having to air some local content, then there's a possibility that the flagship of the BBC to this day might be GBBC, MBBC or 2BBC; a competitor, say the English Broadcasting Company, would be GEBC or MEBC or 2EBC. The U.K. has more callsign blocks allocated to it than we do in the U.S. (you have G, M, 2 and parts of other series like V & Z) which amateur, ship & other stations use.Stereorock (talk) 14:27, 7 May 2014 (UTC)

Transmitters for long range navigation systems
Why did and do transmitters for long-range navigation systems (LORAN, DECCA, Alpha, Omega) not require callsigns? &mdash;The preceding unsigned comment was added by 85.74.40.27 (talk • contribs) 22:19, 9 August 2005.


 * I can think of a couple of reasons.


 * 1) The navigation (or other information) signal format is fixed and does not have provision for inserting a call sign into the middle of the data stream.
 * 2) The specifics of the signal transmitted are fixed for a given transmitter, and distinct from that of all other transmitters in the service, so the identity of the transmitter is clear without the need for a call sign.
 * I don't have references for this, though a look at the LORAN signal format will show that inserting a call sign into that signal would make for quite a mess... Paul Koning 14:51, 19 March 2007 (UTC)

Double redirects
I haven't fixed the double redirects (both those which point here, as well as to the article) because as the page is likely to be moved, it will be a waste of time (they'll just have to be updated again then). Noel (talk) 03:41, 30 September 2005 (UTC)

removal of excessive inaccurate information
Just to document, I removed: "Excepting this and some specialized uses for VE and VF, only the codes CB, CF, CH, CI, CJ and CK are currently in use." This is because: VE and VA are commonly used by amateur radio operators, with VF and VG used for special events. Additionally, CG is a common airplane prefix. Furthermore, this information is excessive for that section of the article and, perhaps, that whole section should be drastically shortened... 13 examples is far to many! Andrewjuren 19:38, 30 January 2006 (UTC)

Canadian use of call signs starting with CB
To the best of my understanding, the CBC's use of call signs starting with CB is not the result of any international agreement between the governments of Chile and Canada. Rather, Canada unilaterally started using CB... call signs for CBC stations in 1937 — citing a 1932 treaty (the General Radiocommunication Regulations of Madrid) allowing the use of any call letters provided care was taken to avoid confusion. Since Canada is far away from Chile, Canadian officials concluded that there was no realistic possibility of confusion between Canadian and Chilean stations using CB... calls, and that there was therefore no need to get permission from Chile. The only source I can cite at the moment is that I sent an inquiry letter to Industry Canada on this subject in 1995 and got a letter back saying the above; I posted the details to the rec.radio.broadcasting USENET newsgroup on June 10, 1995. Richwales 19:06, 18 February 2006 (UTC)

Richwales's post should be visible here on Google groups. Andrewjuren 21:06, 8 March 2006 (UTC)

Although this does not directly answer this question, the CRTC website shows a history of broadcasting in Canada, including: Another site that gives some information is CBC Radio-Canada French Radio Network history. It states: Hope this helps lead someone in the right direction; I'd really like to know the answer to this question! Leave me a message on my User talk page if you discover anything new -> Andrewjuren 21:03, 8 March 2006 (UTC)
 * 1928: The Commission recommends the creation of a Canadian broadcasting network, to be supervised by an independent federal agency.
 * 1932: In response to the Aird Commission's report, Parliament sets up a special committee on broadcasting and acts on its recommendations through the Canadian Radio Broadcasting Act. This legislation, amended in 1936, creates the Canadian Radio Broadcasting Commission (CRBC). The CRBC is to regulate and control all broadcasting in Canada and provide a national broadcasting service.
 * 1936: Amendments to the 1932 Canadian Radio Broadcasting Act create a Crown corporation: the Canadian Broadcasting Corporation (CBC). The CBC is now responsible for providing a national radio service in Canada. The Corporation produces, broadcasts and regulates programming. The CBC replaces the CRBC and takes over the Commission's staff and facilities (8 public stations, 14 private stations).
 * 1937: Through the Minister of Transport, the CBC organizes the Havana Conference attended by the governments of a number of countries in the Americas, including the United States, Mexico and Cuba. They reach an agreement, called the "North American Regional Broadcasting Agreement (Havana Treaty)", on the allocation of frequencies. This will reduce interference. Under the Havana Agreement, Canada obtains six unoccupied frequencies as well as other limited or shared frequencies. These new acquisitions enable Canada to introduce more powerful transmitters and expand its network.
 * 1937:Radio Canada changed its call letters from CRCM to CBF. On December 11, the French language CBF Montreal station was officially opened and it operated on 50,000 watts of power at a frequency of 690 kHz, thereby laying the foundation of the Radio-Canada French language radio network. The federal Minister of Justice, Ernest Lapointe, and the Minister of Transport, C.D. Howe, attended the station's inaugural gala that was marked by a symphonic concert, excerpts from a few legendary operas and a number of traditional sketches. Paradoxically, "CBF" were not radio call letters that had been officially allocated to Canada, but had rather been assigned to Chile. CBF is the acronym for "Canadian Broadcasting French". An agreement had been reached between Chile and Canada regarding the use of these call letters, because there was indeed an "authentic" CBF in Chile, but it was a Chilean Coast Guard radio station.


 * In the 1920s, crown-owed Canadian National Railways introduced radio on its passenger trains, and operated three stations of its own, including CNRO in Ottawa (today's CBO). They also rented time on private stations to broadcast their programming when radio-equipped trains were in the area, operating under "phantom licences" - London's CJGC (later CFPL) would sign off and CNRL would sign on. The CN prefix was used under a special agreement with Morocco. In the Great Depression, CNR had to shut down its radio operations due to lost revenue, and the stations were taken over in 1933 by the CRBC. Call signs starting with CR replaced CN signs, and in 1936-37 in turn, CR was replaced with CB.  So, three consecutive times, Canada's national broadcasting entity used extra-territorial call sign prefixes.


 * Canada's also had one other three-letter call sign: CKO, from 1977 to 1989. It was used for a national all-news network of stations from Vancouver to Halifax. No other national network in Canada has ever existed with its own stations and call sign pattern. GBC 15:41, 6 May 2007 (UTC)

As far as I know, CKO was nominally just a Montréal station and a series of repeaters (CKO-1-FM, CKO-2-FM...). I think the content was the same on all of them. It is very unusual that a station of such recent vintage would have a three-letter callsign, though. --66.102.80.212 (talk) 06:01, 19 March 2009 (UTC)


 * CKO 1470 Montreal was the only AM station in the network with the rest being FM. The network, at least c.1979 when I worked there, was mostly programmed out of Toronto but the Montreal station had a fairly large news staff with at least three reporters/newsreaders that I can recall (Mitch Melnyk, Barry Wilson, and one other whose name escapes me).  Bill Roberts was the ND.  IIRC, they eventually went to all programming (except maybe ads?) originating in Toronto and then ... nothing.  --plaws (talk) 16:54, 22 September 2009 (UTC)

Out of interest by a radio ham
There is a tendency among radio hams to refer to a radio ham in Italy with bad operating practices (it is quite common for Italian radioamateurs to tail-end or even jam transmissions from a DXpedition by constantly calling, even while the DX station is working someone) as an 'IQ zero', although the reason is obvious, I should explain that IQ0 is one of Italy's prefixes commonly allocated to radioamateurs. I bear no malice to the Italians, I just thought this piece of ham radio information might amuse some readers. CMIIW 17:27, 14 May 2006 (UTC)

This is actually used, in my experience, as a term to refer to any amateur radio operator whose low IQ appears to make it impossible for them to understand the rules (both written and unwritten) of their licence. Often found leaving gaps of less than 1 second between overs and not even waiting for the tone on repeaters. (added by MM6YET)


 * Inevitable, I suppose, much like it's seemingly impossible to find a commercial Dominion of Newfoundland VO station without finding a "voice of..." backronym to match. VOAR, VOCM, VOWR thus become "Voice of Adventist Radio", "Voice of Common Man" (or "Voice of Church of Mary") and "Voice of Wesleyan Radio" respectively. The rest of the VO calls are used in amateur service. --66.102.80.212 (talk) 12:42, 18 May 2008 (UTC)
 * Also, the 640kHz CBC station (CBU I think) used to be a VO station as well-VONF.Stereorock (talk) 14:31, 7 May 2014 (UTC)

Removal from 'Aviation' section
I've commented the following section out from the aviation section: "For example a Canadian aircraft initially identified as C-GRTY might then identify as romeo tango yankee but the omission must be initiated by the air traffic services agency, not the pilot. The American aircraft mentioned above might then use seven six quebec." as it doesn't seem to agree with either the CAA Radiotelephony Manual (paragraph 1.8.2 and table 9 being the operative sections) or the [http://www.faa.gov/ATpubs/AIM/Chap4/aim0402.html FAA Radio Communications Phraseology and Techniques] manual. Does anyone know of a manual or some other source that mentions this use, or is it a simple mistake? Oh, and if anyone knows what me at one in the morning has got wrong with that second external link, feel free to fix it. --Scott Wilson 00:40, 18 December 2006 (UTC)


 * The abbreviation to the last three characters of an American registration number is well known and used consistently. I thought I remembered reading that the abbreviation for foreign callsigns is the first and last two characters, but when I went looking, I couldn't back that up. The practice is documented in the Airman's Information Manual published by the FAA. Jay Maynard 04:34, 18 December 2006 (UTC)


 * Is that online anywhere, and can we cite it? It seems to me that the 'N' can only be dropped when used with the aircraft type - both the links above seem to imply that. --Scott Wilson 16:44, 18 December 2006 (UTC)


 * Look at paragraph 4-2-4(a)(2) of the AIM page you cited above:
 * ATC specialists may initiate abbreviated call signs of other aircraft by using the prefix and the last three digits/letters of the aircraft identification after communications are established. The pilot may use the abbreviated call sign in subsequent contacts with the ATC specialist.
 * It's very common usage in the US. Jay Maynard 23:23, 18 December 2006 (UTC)
 * In addition, paragraph 1.8.2 of the CAA manual you link to specifically shows allowing abbreviated callsigns when initiated by ATC, although their abbreviations are different from the US ones (to be expected, since the initial letter over there is not most often N). Jay Maynard 23:31, 18 December 2006 (UTC)


 * Yes, I know that. I'm quite happy with the N1234X -> N34X abbreviation and the N1234X -> Cessna 34X abbreviations - there's plenty of documentation on them, it's the N1234X -> 34X one that I can't find evidence of. -Scott Wilson 02:35, 19 December 2006 (UTC)
 * Re-reading my earlier postings, I hadn't made the above at all clear - sorry, folks. I hope that one does - it's purely the N1234X -> 34X abbreviation I can't verify; I'm happy with everything else. --Scott Wilson 02:39, 19 December 2006 (UTC)


 * That one's informal, not sanctioned officially - but nevertheless, it's quite common, especially in cases where it's just an acknowledgement: "Tiger 446, descend and maintain five thousand." "446." Strictly speaking, the reply should be "Tiger 446, wilco.", but the informal usage is well understood. Jay Maynard 16:51, 19 December 2006 (UTC)

Three letter prefixes for ham call signs
Just made that change. FWIW, they do exist. I've worked two of them recently in fact - 3XM6JR and 3XD2Z (Serge and Alex in Guinea). Suffixes can also have one letter - N8S, BS7H and 6Y1V are just a few examples. - Ryan 20:08, 4 June 2007 (UTC)

Translators
The section on translators...is that referring to actual translation, or repeaters? 69.243.146.164 (talk) 02:20, 18 July 2008 (UTC)

Large ship call signs?
Titanic's call sign was MGY. Isn't there a list somewhere of other famous ships' call signs? It would be a helpful thing to link to this article. --Ragemanchoo82 (talk) 05:38, 15 April 2009 (UTC)

More Canada
Removed the "rarely" from the Canadian listing as XJ through XO are commonly used for non-broadcast radio systems. The Montreal PD was XJF42 and the Montreal FD was XJJ69, as but two examples. The General Radio Service (CB in most places) used XM as a prefix for years until licenses were dropped from that service. --plaws (talk) 19:24, 5 August 2009 (UTC)

British Army Call Signs
The article says that the CSM's call sign is 33A - that can't be right, as surely that would be the call sign of the commander of 3 section, 3 platoon? Jellyfish dave (talk) 18:18, 8 January 2011 (UTC)

List of callsign letters
I was looking for a list of these callsign letters


 * A - alpha
 * B - bravo
 * C - charlie
 * D - delta
 * E - echo
 * F - foxtrot
 * G - golf
 * H - hotel
 * I - india
 * J - juliet
 * K - kilo
 * L - lima
 * M - mike
 * N - november
 * O - oscar
 * P - papa
 * Q - quebec
 * R - romeo
 * S - sierra
 * T - tango
 * U - uniform
 * V - victor
 * W - whisky
 * X - x-ray
 * Y - yankee
 * Z - zulu — Preceding unsigned comment added by 207.188.75.17 (talk) 17:55, 6 November 2012 (UTC)

JY1 and Callsign Length
Wouldn't JY5 be the shortest callsign since ..... is shorter than .? Nickenzi (talk) 05:56, 29 November 2016 (UTC)

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Central United States
In the central part of the USA, no simple rule will distinguish locations using call letters beginning with "W" from those that start with "K". For instance, the "west of the Mississippi" rule (previously cited in the article) is violated not only by WNAX (Yankton, SD) but also by WOAI (San Antonio, TX), WIBW (Topeka, KS), WHO (Des Moines, IA) and a host of others. — Preceding unsigned comment added by 98.245.92.7 (talk) 19:08, 15 March 2017 (UTC)

Use of "North America"
"In North America, they are used for all FCC licensed transmitters.[1]"

Shouldn't this read "In the United States..."?

I don't believe that the FCC has jurisdiction outside of the US, and I see nothing in the referenced link that suggests otherwise. PartTimeEditor (talk) 03:10, 14 July 2017 (UTC)

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Some further confusion on the page name Callsign
The redirect Callsign was usurped in February 2020 by some (likely undisclosed paid) advertising for a UK company, which I've now moved to Callsign (company), since they're very clearly not WP:PRIMARYTOPIC for the word "callsign". In case anyone is wondering, here's where we stand with "call sign" vs. "callsign" links on Wikipedia, even after some editors spent years "correcting" links which needed no correction because it's clearly a well-used alternative for the same thing, and then that UK company idiocy from February until a few minutes ago caused another rash of "corrections" when really the company page should have been moved: All of those include template transclusions, not just direct use. I mention this in case, years from now, someone else claims that "callsign" isn't a well-established spelling: It's only like that because a few users went through and "corrected" everything they saw, not because other users aren't using "callsign" as a single word. --Closeapple (talk) 07:43, 22 April 2020 (UTC)
 * call sign 16,042 (+43 call signs) (if I clicked on groups of 500 as many times as I think I did)
 * callsign 522 (+70 callsign (radio), +11 callsigns)
 * call letters 272