DK3NU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO40

Receiver-side FT8 activity involving DK3NU, decoded by SO8OO in southeastern Poland. 616 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 41 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-14.

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 616 FT8 messages attributed to DK3NU as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (50%), followed by 40 m (27%) and 80 m (23%). Most decodes (71%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

616
Messages attributed
41
UTC dates decoded
122
Active 15-min windows
-7 dB
Estimated median S/N

Bands

80m · 139 40m · 168 20m · 307 10m · 2
First attributed message: 2026-06-06
Last attributed message: 2026-09-14 08:30 UTC

Observed FT8 message patterns

Attributed sample
616 messages
Active dates
41 UTC dates
Estimated median S/N
-7 dB
Estimated 10th-90th percentile
-17 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 81, moderate (-15 to -9 dB) 180, strong (≥ -8 dB) 355.

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 DK3NU 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 DK3NU

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
JO40 · 187 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
911 km (approx.)
Last such locator decoded
2026-09-14 08:21 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 UTCBandDK3NU S/NCounterpartCounterpart S/NMsgsCapture
09-14 08:29 40m -12 / - GW6OHV - / +2 3 Partial capture
09-14 08:29 40m - / - HA9OA -2 / - 2 Partial capture
09-14 08:28 40m -13 / +2 LA8ENA -20 / 0 4 ✓ Full exchange observed
09-14 08:25 40m -17 / - TK5NJ - / +8 3 ✓ Closing fragment
09-14 08:20 40m -12 / - K2UO - / - 3 Partial capture
09-14 08:17 40m -12 / - EC3A - / -2 2 ✓ Closing fragment
09-14 08:16 40m -8 / - DF1ZN -18 / - 4 ✓ Full exchange observed
09-13 15:47 40m 0 / - UF6V/UA5D - / +1 2 Partial capture
09-13 15:32 40m -1 / - UA3AKO - / +3 3 Partial capture
09-13 15:27 40m 0 / - UA3AKO - / - 2 Partial capture
09-12 19:12 80m -7 / - DK2HM - / - 4 Partial capture
09-12 19:08 80m -11 / - DA6NEL -11 / +10 7 ✓ Full exchange observed
09-12 19:06 80m -14 / - DL2YBG - / - 3 ✓ Closing fragment
09-12 19:02 80m +4 / - DK2HM - / +3 5 Partial capture
09-11 14:03 40m -5 / - SP9CXN - / - 2 ✓ Closing fragment
09-11 14:01 40m -6 / - PA3EWP -1 / - 2 ✓ Closing observed
09-10 18:05 80m -1 / +5 DL2EH -3 / - 4 Partial capture
09-10 17:41 40m -3 / -17 DG7NFX +10 / -5 7 ✓ Full exchange observed
09-10 11:53 40m -8 / - 5Q1X - / +4 2 ✓ Closing fragment
09-10 11:48 40m -9 / - WB8YJF/4 - / +1 2 Partial capture
09-10 11:45 40m -11 / - IN3OWY -5 / +8 4 ✓ Full exchange observed
09-10 11:35 40m -8 / -18 LX1FP -19 / -12 9 Partial capture
09-10 11:34 40m -6 / - GB50PUNK - / +5 2 Partial capture
09-09 19:29 80m +3 / - UX5UO - / +4 5 Partial capture
09-09 19:28 80m - / - UA4FKT +5 / - 2 Partial capture
09-09 19:27 80m -1 / -9 EA3HMM -9 / 0 5 ✓ Full exchange observed
09-09 19:25 80m +1 / - F5OYA/P - / -6 3 Partial capture
09-09 19:16 80m 0 / - UX5UO - / +9 8 Partial capture
09-09 18:16 80m -6 / - DL1RWN - / - 2 Partial capture
09-09 09:46 40m -22 / - DG7NFX - / - 2 Partial capture
09-09 09:44 40m -23 / +2 OK2VCR -2 / +5 5 ✓ Full exchange observed
09-09 09:41 40m -21 / - DG7NFX - / - 3 Partial capture
09-09 09:39 40m - / - DL1AXX 0 / - 2 ✓ Closing fragment
09-09 09:35 40m -9 / +3 DL7DL -22 / -4 5 ✓ Full exchange observed
09-08 17:57 80m - / -16 DL9GCG -1 / - 4 Partial capture
09-08 16:34 80m -6 / - UX5UO - / - 3 Partial capture
09-08 16:33 80m +4 / -13 UR5SG +16 / +2 4 ✓ Full exchange observed
09-08 16:31 80m 0 / - UX5UO - / - 3 Partial capture
09-08 16:28 40m - / -21 UA4FEN -1 / - 3 Partial capture
09-08 16:27 40m -8 / -1 G0RVY -4 / - 4 ✓ Full exchange observed
09-08 16:23 40m -6 / -9 IW0FGX 0 / +6 5 ✓ Full exchange observed
09-08 16:14 40m -2 / -16 DL9GCG +3 / -15 9 Partial capture
09-08 12:34 40m -19 / -17 DG8YFM -20 / - 2 Partial capture
09-08 12:31 40m - / -11 DF0AWG -9 / - 2 ✓ Closing fragment
09-08 12:27 40m -18 / - G8KHF - / - 2 ✓ Closing fragment
09-06 08:02 40m -17 / - DL1AX - / - 3 Partial capture
09-05 18:28 40m +3 / - IU3WOH +7 / +2 3 ✓ Closing observed
08-31 19:11 80m -11 / - LZ1GC - / - 6 Partial capture
08-31 19:09 80m - / - DO7NHK -12 / - 2 ✓ Closing fragment
08-31 19:08 80m - / - LZ2VQ -9 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
082045 -13  799  K2UO DK3NU JO40 (x3)
082530 -15 1437  TK5NJ DK3NU +08 (x3)
082815 -14 1437  LA8ENA DK3NU +00
082830 -22 1743  DK3NU LA8ENA R+02
082845 -12 1437  LA8ENA DK3NU RR73
082900 -18 1744  DK3NU LA8ENA 73
082900  -3 2988  DK3NU HA9OA KN08 (x2)
082930 -14 1437  GW6OHV DK3NU +02 (x3)
80m 
UTC    dB Audio  Message
190630 -13  844  DL2YBG DK3NU +16 (x2)
190845 -16  844  DK3NU DA6NEL JO60
190900  -9  844  DO9BAU DK3NU RR73
190915  -9  844  DK3NU DA6NEL JO60 (x2)
191000 -12  844  DL0RDG DK3NU RR73
191015 -18  844  DK3NU DA6NEL JO60
191030 -11  844  DA6NEL DK3NU +10
191045  -6  844  DK3NU DA6NEL R+20 (x2)
191215  -6  733  DK2HM DK3NU JO40 (x4)
20m 
UTC    dB Audio  Message
175515  -6 1679  DK3NU DL3MIB -15 (x3)
175930  +9 1108  BG8HNC DK3NU JO40 (x3)
180130  +4 1107  4L6EZ DK3NU JO40
180200  +3 1107  YO9CX DK3NU JO40 (x2)
180330  -9  854  TA6MMI DK3NU JO40 (x6)
10m 
UTC    dB Audio  Message
110845 -24 1684  OE5HHR DK3NU 73
111100 -12 1685  DK3NU S59MA JN76 (x4)
101200 -13 1169  DK3NU IK2JYT R+20 (x2)
163300 -11  531  9Y4DG DK3NU -07
090630 -13 1824  DK3NU LZ4VR KN13 (x4)

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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