UK Amateur Radio Call Signs (callsigns)
US Callsign Questions
This New Ham Query will return the issued amateur radio call signs which have been granted in the last month. These are new hams or hams who received a sequential call sign as the result of an upgrade and do not have any previously assigned call. You can sort them by call sign, name or zip code and can limit the search to a specific zip code area. To limit your results, enter a zip code or partial zip code. This allows you to open the file in Excel. However, the file is actually formatted internally as an html file or web page.
Information for amateur radio licensees
In broadcasting and radio communications , a call sign also known as a call name or call letters —and historically as a call signal —or abbreviated as a call is a unique designation for a transmitter station. The use of call signs as unique identifiers dates to the landline railroad telegraph system. Because there was only one telegraph line linking all railroad stations , there needed to be a way to address each one when sending a telegram. In order to save time, two-letter identifiers were adopted for this purpose. This pattern continued in radiotelegraph operation; radio companies initially assigned two-letter identifiers to coastal stations and stations aboard ships at sea.
They consist of from 3 to 9 letters and digits, with their composition determined by a station's service category. AM, FM, TV and shortwave broadcasting stations can request their own call letters, as long as they are unique. The FCC policy covering broadcasting stations limits them to call signs that start with a "K" or a "W", with "K" call signs generally reserved for stations west of the Mississippi River, and "W" limited to stations east of the river.