C21DA Naoero

C21DA Naoero

DX Operation IOTA OC-031
🇳🇷 C2 — Nauru

VK4MAP is currently active as C21DA from Naoero, Nauru from 23 September to 5 October 2026. The operation counts for IOTA OC-031 (Nauru). Activity is planned on 80m, 40m, 20m, 15m and 10m, SSB. QSL via VK4MAP (direct); direct requests must include a self-addressed envelope (SAE).

SSB10m15m20m40m80m
Updated on 01 Oct 2026
Location: Naoero
QSL via: VK4MAP, direct
CONCLUDED
From23 Sep 2026
To05 Oct 2026
Latest news
C21DA is active from Naoero, with VK4MAP operating. Activity has been mainly on 40m and 10m SSB.
· DX-World.net · full history
Live cluster spots Official website Add to calendar Google Calendar

C21DA Live Spots

11:16:01 UTC
UTC Spotter Frequency Mode Comments Band Age
12:18 02 OctSP3TLJ14241.0SSBup5-10 tnx 73! gl20m11d
12:05 02 OctR9FO14241.0SSBtnx qso up520m11d
12:04 02 OctR9FO14201.0SSBtnx QSO Up 520m11d
12:01 02 OctDK1WP14241.0SSBTNX 5/9 - 5up20m11d
11:56 02 OctVK2RI14241.0SSB+520m11d
11:52 02 OctPD1JN14240.0SSBTNX 73 Split 5/10 UP20m11d
11:52 02 OctG4XNR14240.0SSBqsx 14245.0020m11d
11:42 02 OctEW7GZ14240.0SSBUP 5 TNX20m11d
11:40 02 Oct9A2AJ14240.0SSBdeep qsb, tnx gl up520m11d
11:18 02 OctF4FTA14240.0SSBSplit 5 up SP20m11d
11:15 02 OctDJ4EL14240.0SSBup, OC-03120m12d
11:04 02 OctVK2KET14240.0SSB5-7 Hunter Valley NSW VK Land20m12d
10:58 02 OctON6PL14240.0SSB55 sp20m12d
11:40 01 OctK1XV7166.0SSBunder local ragchewers40m12d
11:31 01 OctLA6RJA10136.0FT8ccc c2* iota oc-03130m12d
11:29 01 OctW7TJ7166.0SSB—40m12d
11:59 30 SepYE1BON7166.0SSBSimplex 5940m13d
11:53 30 SepWB3AVN7166.0SSBSimplex40m13d
11:45 30 SepHL2WA7166.0SSBSimplex, OC-03140m13d
11:39 30 SepJI2FBG7166.0SSB—40m13d
11:37 30 SepUN7LZ7166.0SSBgud sig, smplx40m13d
11:33 30 SepK9MBQ7166.0SSB58 in VA40m13d
11:25 30 SepM7KZO14245.0SSB—20m13d
11:08 30 SepEA4BT14245.0SSB35 in madrid spain20m14d
09:32 30 SepIK4IYC18150.0SSBCCC C2*17m14d

Best time to work — by continent

Busiest band and UTC window per continent, based on cluster spots collected so far for this operation.

ContinentBest bandBest time (UTC)Based on
Europe20m09:00–12:00 UTC42 spots

Source reports

Our sources do not fully agree on the details of this operation. We list what each one reports below and highlight where they differ from our listing.

NG3K ADXO
QSL via: reports VK4MAP Direct (our listing: VK4MAP, direct)
425DXN wcal #1847
QSL via: reports direct to VK4MAP (our listing: VK4MAP, direct)

Update history

Last confirmed on by NG3K ADXO.

  • First reportedNG3K ADXO
    Naoero: Sep 23-30, 2026 -- C21DA -- QSL via: VK4MAP Direct Sep 23-30, 2026 -- Naoero -- C21DA -- QSL: VK4MAP Direct -- Source: OPDX (Sep 24, 2026) -- By VK4MAP fm Meneng District, Naoero (formerly Nauru); 80 40 20 17 15 10m; SSB; holiday style operation; include 4USD w/ QSL request (VKs SASE); end date unclear
  • Update425 DX News
    Operation extended until 5 October 2026. IOTA reference: OC-031.
  • UpdateDX-World.net
    C21DA is active from Naoero, with VK4MAP operating. Activity has been mainly on 40m and 10m SSB.
Last updated on 01 Oct 2026