Author: Alan, 5B4AHJ


Argentina uses the first letter of the suffix to specify the area the station is located in.
If the first letter of the suffix is 'Z', the station is located in one of the Antarctic entities.


In the case of callsigns with a two-letter suffix, the Antarctic entity is then specified by the second letter of the suffix, as follows:


Antarctica: B, D, E, F, H, J, K, L, N, P, Q, R, U, V, W, X
South Orkney: A, G, M
South Sandwich Is: Y
South Shetland Is: C, I, O, S, T


The callsign possibilities are summarised below:


ADIF Entity Name ADIF DXCC Code Callsigns
Antarctica 13 L[O-W][0-9]Z[B, D, E, F, H, J, K, L, N, P, Q, R, U, V, W, X]
South Orkney Is 238 [AY, AZ, L[O:W]][0:9]Z[A, G, M]
South Sandwich Islands 240 [AY, AZ, L[O:W]][0:9]ZY
South Shetland Islands 241 [AY, AZ, L[O:W]][0:9]Z[C, I, O, S, T]


The above information is taken from the DX NEWS-SHEET, No. 193, dated 1965-11-30, published by Geoff Watts.


Club Log maps all the above callsign possibilities by a set of software rules.
Callsign exceptions are therefore not required for callsigns conforming to these rules.

Because the mapping is performed by a software rule, the above mappings are not reflected in cty.xml.


CQ Magazine, dated March, 1962, has more detailed information:

Suffix Base DXCC Entity
ZA, ZG, ZM Laurie Island South Orkney
ZC, ZI, ZO Deception Islans South Shetlands
ZB, ZH, ZN Observatory Island, Melchior Antarctica
ZE, ZK, ZQ Almirante Brown Antarctica
ZF, ZL, ZR, ZU, ZV Bahia Esperanza Antarctica
ZW General Belgrano, Terra del Coats Antarctica
ZY

South Sandwich


There is a small number of exceptions to the above rules, which Club Log handles in the usual way.
Known exceptions are:


Some callsigns only have a single letter (ie Z only) suffix. 
There is also a small number of callsigns with a three-letter suffix, e.g. LU1ZAB.
Club Log maps these by default to Antarctica.


The callsign possibilities are summarised below:


Default ADIF Entity Name ADIF DXCC Code Callsigns
Antarctica 13 [AY, AZ, L[O:W]][0:9]Z
Antarctica 13 [AY, AZ, L[O:W]][0:9]Z[A:Z][A:Z]


Club Log uses callsign exceptions to map callsigns with one or three letter suffices if they are not in Antarctica.


Acknowledgements

CQ Magazine

DX News Sheet, published by Geoff Watts