DC1OA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO43

Receiver-side FT8 activity involving DC1OA, decoded by SO8OO in southeastern Poland. 77 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-21.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 77 FT8 messages attributed to DC1OA as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (71%), followed by 20 m (26%) and 80 m (3%). Most decodes (69%) fell within the six-hour window 10:00-16:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -4 dB.

Overview

77
Messages attributed
15
UTC dates decoded
20
Active 15-min windows
-4 dB
Estimated median S/N

Bands

80m · 2 40m · 55 20m · 20
First attributed message: 2026-06-10
Last attributed message: 2026-09-21 14:23 UTC

Observed FT8 message patterns

Attributed sample
77 messages
Active dates
15 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-16 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 47.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with DC1OA in decoded directed-looking exchanges:

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to DC1OA

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator
JO43 · 36 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
964 km (approx.)
Last such locator decoded
2026-09-21 14:22 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTCBandDC1OA S/NCounterpartCounterpart S/NMsgsCapture
09-21 14:22 40m +7 / - F4NKF - / -15 3 ✓ Closing fragment
09-10 15:58 40m +6 / - EA3HKY - / -18 2 Partial capture
09-10 15:57 40m +1 / - RM1B - / -7 3 ✓ Closing fragment
09-10 15:55 40m +2 / +7 DL6RS +3 / +2 5 ✓ Full exchange observed
09-10 15:55 40m - / - S51PV -10 / - 7 Partial capture
09-10 15:53 40m 0 / - DL3HN -9 / -13 4 ✓ Full exchange observed
09-10 15:52 40m -1 / - DG6MA - / -11 2 ✓ Closing fragment
09-10 15:51 40m +2 / - R1BDX -8 / 0 4 ✓ Closing observed
09-10 15:48 40m +2 / - F1IQH - / -6 2 ✓ Closing fragment
09-10 15:48 40m +5 / -3 RN6MA +8 / -18 6 ✓ Full exchange observed
09-01 16:04 40m -6 / - PE9JAN -13 / -4 3 Partial capture
09-01 16:01 40m -4 / - TK5NJ - / -14 5 ✓ Closing fragment
08-30 10:25 40m -7 / - <...> - / - 9 Partial capture
08-22 15:47 20m -14 / - EC3A -10 / - 3 ✓ Closing observed
08-22 15:46 20m -12 / - <...> - / - 2 Partial capture
08-16 15:47 40m - / -12 <...> -17 / - 3 Partial capture
08-16 15:44 40m -23 / - <...> - / +4 2 Partial capture
08-12 20:55 20m -14 / - NB2A - / - 2 Partial capture
07-26 08:51 40m -16 / - GX3SBL - / -10 2 ✓ Closing fragment
07-25 20:14 40m - / - PF1B -13 / - 2 Partial capture
07-25 20:13 40m -1 / - G7RCQ - / -4 3 ✓ Closing fragment
06-24 10:47 20m -23 / -4 II0RTER -10 / -2 7 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m 
UTC    dB Audio  Message
155730  -8 2224  DC1OA S51PV JN76
155745  +3  792  RM1B DC1OA -07
155800  -9 2223  DC1OA S51PV JN76
155815  +2  792  RM1B DC1OA RR73
155830  -8 2223  DC1OA S51PV JN76
155845  +5  792  EA3HKY DC1OA -18 (x2)
160015  +2  792  CQ DC1OA JO43 (x4)
104500 -17 1067  DC1OA DJ2MS -14
142200  +9  475  F4NKF DC1OA JO43 (x3)
20m 
UTC    dB Audio  Message
104745 -24 1774  II0RTER DC1OA JO43
104800  -9 1773  DC1OA II0RTER -06
104815 -20 1773  II0RTER DC1OA JO43
104830  -9 1773  DC1OA II0RTER -03 (x2)
104915 -24 1774  II0RTER DC1OA R-02
210830 -12  259  DC1OA TN8GD RR73
091430  -3  905  DC1OA EA5AR -04
205500 -15  273  NB2A DC1OA JO43 (x2)
154600 -10 1339  <...> DC1OA JO43 (x2)
154715 -16 1873  EC3A DC1OA JO43
154800 -10 1872  DC1OA EC3A RR73
154815 -12 1873  EC3A DC1OA 73

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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