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K, W, X, C starting call letters

Ture, but I was just thinking that Spanish speaking countries might have wanted to avoid using K and W as they were not "part of the proper Spanish alphabet."

Also true, but I guess N was already taken.:)

Note that Germany has the "D" series (Deutschland).
Germany had the entire D block until 1947, when they were left with DA-DR. DS-DT are assigned to South Korea, and DU-DZ belong to the Philippines.
 
Let's not forget Haiti, with calls beginning with "4". Religious station 4VEH is probably the best known example, due to its many years on shortwave.

Edit to add: IIRC the individual transmitters of 4VEH actually had their own calls with a different final letter, but 4VEH was the unified branding for the operation. Memory a little fuzzy on that; their SW operation has been gone for several decades.
Haiti has the 4V and HH blocks.
 
Call letters for broadcast stations in Australia are a number followed by two or three letters. The number indicates in which Australian state/territory the station is located.

2-New South Wales
3-Victoria
4-Queensland
5-South Australia
6-Western Australia
7-Tasmania
8-Northern Territory

Some newer stations in the Australian Capital Territory (their equivalent of D.C.) have a "1" as the number.

Back when Papua-New Guinea was an Australian territory, stations there began with a "9".
Originally, Australian broadcast stations had a VL prefix, followed by the number and letters, similar to ham calls (which use VK). Maybe VL is still printed on the licenses, but it isn't announced on-air. Not sure if it ever was.
 
Originally, Australian broadcast stations had a VL prefix, followed by the number and letters, similar to ham calls (which use VK). Maybe VL is still printed on the licenses, but it isn't announced on-air. Not sure if it ever was.
On shortwave, the ABC's Northern Territory Service stations (which launched in the early 1980s and closed in 2017) had the calls of VL8A (Alice Springs), VL8T (Tennant Creek) and VL8K (Katherine).

Decades earlier, the ABC domestic shortwave stations in Brisbane, Sydney, Melbourne and Perth had VL then another letter, then a number. The last of those stations closed in 1993. The number referred to the frequency band, not the state. VLX9 (on 9610 kHz) from Perth was the most distant shortwave station in the world for many U.S. SWLs. I recall it had a comfortably listenable signal into Texas in the 1960s-70s.
 
Didn't the W originally stand for Wireless?
I think that this was an "after the fact" decoration of the meaning... just like WSB in Atlanta became "Welcome South, Brother".
 
Ture, but I was just thinking that Spanish speaking countries might have wanted to avoid using K and W as they were not "part of the proper Spanish alphabet."

Also true, but I guess N was already taken.:)

Note that Germany has the "D" series (Deutschland).
K and W are used in Spanish for words of foreign derivation even though they aren't officially part of the alphabet.
 
And some countries added their own subsets. Ecuador uses 4 letters beginning with "HC" followed by a number where the number indicates the province or group of provinces. HCRM1 would be an Ecuadorian station in the Province of Pichincha, while HCRC2 would be one in Guayas and so on. In that nation, for many years, stations were not allowed to use call letters for identification and required an approved name be attached to the license.
HCJB being a notable exception?
 
Originally, Australian broadcast stations had a VL prefix, followed by the number and letters, similar to ham calls (which use VK). Maybe VL is still printed on the licenses, but it isn't announced on-air. Not sure if it ever was.
Australian stations still do have them. They just don't use them. Station NBN is actually VLNBN. The VL is not used except for international and legal purposes.
 
The W calls were used for ships on the America's west coast. The K calls were used for ships on the East and Gulf coasts.

When commercial stations started they were flipped around so commercial stations on the east used W calls and those out west used K calls.

Later N were used for the navy and AAA-ALZ, were used for Army. This designatin is not followed anymore. I read (but can't find a source) that the rest of the A group was assigned to Germany and then taken from and reassigned to the US after WWI.

Amature call signs can start with K,W,N or A and I they used to use X for experimental stations.
 
The W calls were used for ships on the America's west coast. The K calls were used for ships on the East and Gulf coasts.

When commercial stations started they were flipped around so commercial stations on the east used W calls and those out west used K calls.
But not right away, since KDKA, KQV and KYW were in Pennsylvania and WBAP was in Texas.
 
HCJB being a notable exception?
They predated the more recent regulations, and used the excuse that "HCJB" was just the abbreviation of the station name, "Heralding Christ Jesus' Blessings".

HCJB dates back, IIRC, to 1932.
 
But not right away, since KDKA, KQV and KYW were in Pennsylvania and WBAP was in Texas.
For a while, the "W" prefix extended across the Great Plains, but was then pulled back to the Mississippi River as the demarcation point. In much of Minnesota, they could not quite make up their mind, of course!
 
The W calls were used for ships on the America's west coast. The K calls were used for ships on the East and Gulf coasts.

When commercial stations started they were flipped around so commercial stations on the east used W calls and those out west used K calls.
Three-letter calls, KDA-KZZ were assigned to coastal stations on the west coast, to avoid confusion with ship stations with 4-letter calls in the Atlantic and Gulf of Mexico. The east/Gulf coast coastal stations were assigned WAA-WZZ for the same reason. This was before 1927, when KAA-KCZ were still assigned to Germany.

Commercial and early broadcasting stations were considered the same as coastal stations early-on. There was no permanent assignment policy for broadcasters until 1922.
Later N were used for the navy and AAA-ALZ, were used for Army. This designatin is not followed anymore. I read (but can't find a source) that the rest of the A group was assigned to Germany and then taken from and reassigned to the US after WWI.
The AA-AL block was taken from Germany and assigned to the United States by the ITU at the 1947 WARC. Germany had the entire A-block at one time, but I don't know if the whole thing was taken and split in 1947, or if some of that block had been reassigned at earlier Conferences (1927 or 1938).

The reassignment of German prefixes after both World Wars could be considered "spoils of war," I guess.
Amature call signs can start with K,W,N or A and I they used to use X for experimental stations.
Experimental stations are only assigned 2x3 calls, with the first letter after the digit being X. KB2XYZ would be an experimental license. KB2X and KB2XY are ham calls.

Any other call with X can be used by hams. For example, my ham callsign is W7XTV, which would have been an experimental station prior to about 1948, but has been OK as a ham call since 1978. In fact, pioneer experimental TV stations W2XBS (NBC) and W2XAB (CBS) are now being used by hams. There are probably others as well.
 
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