WAP DDR-Ø1 and WAP DEU-Ø3, why two references for Georg Forster Station?

Just a bit of clarification to answer some questions arose recently by WAP readers:
After the German reunification on Oct. 3, 1990 Georg Forster Station became WAP-DEU-Ø3 for a while.
For this reason, Y88POL and Y9ØANT after Oct. 3, 1990 are WAP DEU-Ø3, while before Oct. 3, 1990 these callsign were WAP DDR-Ø1 as Georg Forster Station did belong to the German Democratic Republic.
In addition, after the German reunification at Oct. 3, 1990 it was decided later that the further German Antarctic research activities would have been focused at Neumayer II Base (WAP DEU-Ø2) and its surroundings. So, in the years 1994, 1995 and 1996 the entire Georg Forster Station had been dismantled and disposed of.

A commemorative plaque was left at this place. The former Georg Forster Base was included into the ATS list of historic sites in Antarctica with No. 87.

List of all Antarctic historic sites: https://documents.ats.aq/recatt/att596_e.pdf

In the summer season 1987-1988 at Georg Forster Station of the German Democratic Republic in Antarctica, a completely new radio station was built. Georg Forster did get the marine Call Y3ZA and the land-based Call Y3G. The radio system was a very powerful and reliable: KSS-1300 with 1 KW, able to operate in CW, SSB and SITOR Telex, several EKD-500 receivers, an extremely good working 2x85m V-Beam, a corner reflector antenna, a diversity antenna, a vertical antenna and several wire antennas».

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HAM Radio activities from Georg Forster were:
1988-1989  Y88POL   (op: DL8JDX picture below)
1989-1991  Y90ANT  (op: DK1BT)
1990-1992  Y88POL   (op: DL8JDX)

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The Georg Forster Base had 5 overwintering teams:
Antarctic Expedition (AE) 1987-1989 with 8 members (including Volker, DL8JDX, as electronic engineer)
AE 1988-1990 with 8 members
AE 1989-1991 with 8 members
AE 1990-1992 with 4 members (including Volker, DL8JDX, as electronic engineer, radio officer and post officer)
AE 1991-1993 with 1 member

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TNX Volker, DL8JDX