![]() Montreal, CBF-1 Senneterre, CBF-2 Mont-Brun, etc.). The call-sign series (example : VUA Ahmadabad, VUA2 Amritsar, VUA3Īllahabad, etc.), an additional station on the same frequency in theįrequency series ( CD55, CD55A, CD55B, etc.) or a relay station (CBF (Of note, the powers of HV2 and HV100 have increased since the call-signsĪ numerical suffix can either indicate an additional station in This format is used in Vatican City on MW. Metres, 3 = 41 metres, 4 = 31 metres, etc.), while the 4 is the In the 2ndĮxample, OEI is the primary call-sign, the 3 indicates the band (2 = 49 While the A is the sequential assignment within that band. Shortwave band (2 = 49 metres, 3 = 31 metres, 4 = 25 metres, etc.), In the first examples, the primary call-sign is OLR, the This format includes coded band information within In the HCEE2 example, this is a TV station in In the first two examples above, 560 kHz and 21.8 MHzĪre the frequencies of the stations with these call-signs, while DMQ-6 This format includes abbreviated frequency information within Today, Russia is the biggest user with its RW stations. Sequential call-signs wereįirst adopted by Switzerland, with HB1 Geneva and HB2 Lausanne as theįirst two licensed stations. Region, type of licence or radio company. ITU prefix, while in others it may be letters assigned to a particular In some countries, this group of letters is simply an ![]() Usually starting with 1 or 20 and advancing sequentially with each new This format consists of a group of letters followed by a number, The 3rd letter signifies a region of the country. One assigned to fixed service (point-to-point) radio stations. This format has been adopted by a few countries and is the same Used in Peru is another example, where OA2XA becomes OAX2A. Than HC2AB, for example, the call-sign appears as HCAB2. Of the amateur service format where characters are transposed. The HC series used in Ecuador for radio stations is a variation Reports, even though the previously "de facto" calls are now "de jure". Is encouraged to continue using the fully prefixed call for international MW DX Truncated calls the official ones, at least in the mediumwave band. Over time, some countries such as Australia *have* actually made the The assumption that these truncated call-signs were the actual official Because of this practice and because of the lack ofĪccess to official publications in the early days of radio, DXers have often made "7LO" and "2RO" were used over the air in lieu of the full They were often truncated, leaving the first one or two letters off.įor instance, in the first few examples "2AB" "2LO" Since these call-signs tended to be moreĬumbersome to use over the airwaves versus simple 3 or 4-letter calls, Number following the prefix usually indicates the region within theĬountry (although in the Italian I2RO example, the 2 indicates the 2nd Stations and is the same one assigned to amateur radio stations. This format was adopted by many countries for their broadcast In CM EA Santa Clara, Cuba, the E indicates Villa Clara Province. The 3rd letter can indicate the region within the country for example For commercial stations, the additional letters were often company abbreviations, such as W BENīuffalo, USA for the Buffalo Evening News newspaper. For government stations, theĪdditional letters assigned were often abbreviations for cities, suchĪs OK P Prague and OK B Brno, Czechoslovakia or 9R LV Leopoldville, Congo. In many cases the additional letters have In the main examples above : K-DKA, LK-A, Z2-AB, The call sign consists of the ITU-assigned country prefix followed by a ![]() ![]() Letter-number or number-letter prefixes also exist. Mexico City, TIRSCLCH Los Chiles, Costa Rica, etc. Some countries allow even longer call-signs such as XEABC The 3-letterįormat dominates in Europe while the 4-letter format dominates in theĪmericas. This is the most common form of call-sign. ![]()
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