3A     - Col, MM0NDX and Steve, MM0SAJ will be active again as 3A/MM0NDX and 3A/MM0SAJ from Monte Carlo, Monaco from 30 December to 3 January. Their main focus will be on the low bands using SSB, FT8/FT4 and RTTY. QSL both calls via EB7DX and LoTW. [TNX DX World]

4X     - A Christmas 2025 operation will be conducted from Israel on 25-31 December. Four groups of operators capable of  providing QSOs in FT8, SSB, CW and via satellite will be QRV as  4X25X, 4X25M, 4X25A and 4X25S: https://www.iarc.org/xmas-2025/. QSL via 4X6ZM, bureau or direct.

9Y     - Earl, WA3DX will be active as 9Y9DX from Arouca, Trinidad (SA-011) on 17 December and again on 22-29 December, and from Buccoo, Tobago (SA-009) on 18-22 December. He will operate  mainly FT8 and FT4 on 40-10 metres. QSL via LoTW, or direct to home call. QSOs will be uploaded also to Club Log.

CT     - CS25XMAS is the special callsign for members of the National Association of Portuguese Radio Operators and Radio Amateurs (CS5RP) to celebrate Christmas on 19-25 December. QSL via email. [TNX CT1END]

CT     - To celebrate the 100th anniversary of Rede dos Emissores Portugueses (REP), Portugal's IARU member society, around fifty operators scattered all around the country will use three special callsigns - CS26REP, CR26REP and CR3REP - on 1-7 January. Look for activity on various bands and modes, and via QO-100. Certificates and eQSLs will be available on https://hamaward.cloud/awards.

DL     - The special callsign DB100FT will be active throughout 2026 to celebrate the centenary of the Berlin Radio Tower (Funkturm), one of the city's most iconic landmarks. The 150-metre-high steel lattice tower occupies a prominent place in the history of radio broadcasting in Germany, as it was used to broadcast transmissions starting in 1926. QSL via the bureau, or direct to DO2PZ.

DL     - DARC Team SES will be active as DL25WIKI throughout 2026. The special callsign celebrates the 25th anniversary of  Wikipedia, The Free Encyclopedia, founded in January 2001: "the station  reflects the spirit of free knowledge and international collaboration within the amateur radio community. Wikipedia and amateur radio share common values: openness, education, technical enthusiasm, and worldwide networking". QSL cards will be sent automatically via the bureau; QSOs will also be uploaded to LoTW and the DCL (DARC Community Logbook).

KH0    - Ken, JO1VRK expects to be active as KH0/AJ6VJ from Saipan (OC-086), Mariana Islands from 29 December to 3 January. He will be QRV on 40-10 metres CW and digital modes. QSOs will be uploaded to LOTW, eQSL, and Club Log.

LZ     - LZ2025ZONE  and  LZ2026EURO are two  special callsigns  celebrating Bulgaria's admission into  the Eurozone and adoption of the euro as of 1 January 2026.  QSLs via LZ2VP.  Also look for  LZ1EURO  to  be active on 1-6 January (QSL via LZ3SCO)

SP     - The Dobrzycki Amateur Radio Club (SP3PDO) will use twelve special callsigns during 2026 to honour as many different  Polish saints. The first callsign in the series, SP1894MMK (1-31 January), is for St. Maximilian Maria Kolbe (SP3RN), born on  8 January 1894 and killed at Auschwitz in 1941.
It  will be followed by SP1440SL (February), SP1040SSZ (March), SP1865JML (April), SP1920KW (May), SP1373JA (June), SP1183JO (July), SP1905MFK (August), SP1373AB (September), SP1550SK (October), SP1234KK (November) and SP1835JK (December). QSLs via SP3PDO. See https://radioawards.club/ses/155 for the certificates.

TL8    - Joao, CR7BNW will be active as TL8BNW from Bangui, Central African Republic for six months [425DXN 1804]. During his stay he will be QRV on 40, 20, 15, and 10 metres SSB and FT8. He has already conducted some preliminary tests in preparation for his first activity, which is scheduled for 20-25 December. QSL via LoTW,  QRZ, and via the Portuguese QSL bureau. [TNX CT1END]

VP8_ssh- Ivo, LZ1AAW is heading to the Bulgarian Antarctic Base St. Kliment Ohridski on Livingston Island, South Shetland Islands (AN-010). He plans to be QRV as LZ0A in his spare time between approximately 27 December and 16 February 2026. He will operate SSB and FT8/FT4 on 20 metres and possibly other bands. QSL via the bureau, or direct to LZ1KDP; QSOs will be uploaded to LoTW after the end  of the activity.

W      - N3V is a special callsign for members of the Charles County Amateur Radio Club to commemorate the anniversary of the  first wireless voice transmission, achieved by Reginald Fessenden 125 years ago. Look for activity between 19 and 26 December, and especially on the actual anniversary day (23 December). QSL direct to Michelle Sack, PO Box 1182, Waldorf MD 20604-1182, USA.

XU     - Tom, DL7BO will be active again as XU7GNY from Cambodia between 22 December and 18 January. He will operate CW, SSB and FT8 with a focus on the low bands. QSL via DL4WK, Club Log's OQRS, LoTW. [TNX The Daily DX]