DD4JN — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving DD4JN, decoded by SO8OO in southeastern Poland. 477 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-31.
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 477 FT8 messages attributed to DD4JN as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (87%), followed by 40 m (11%) and 80 m (2%). The busiest six-hour window was 08:00-14:00 UTC, containing 49% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.2 dB.
Overview
Bands
Last attributed message: 2026-10-31 14:33 UTC
Observed FT8 message patterns
- Attributed sample
- 477 messages
- Active dates
- 18 UTC dates
- Estimated median S/N
- -10.2 dB
- Estimated 10th-90th percentile
- -17 to -2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 89, moderate (-15 to -9 dB) 220, strong (≥ -8 dB) 168.
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 DD4JN 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 DD4JN
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
- JO31 · 302 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,054 km (approx.)
- Last such locator decoded
- 2026-10-31 14:33 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 UTC | Band | DD4JN S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-30 08:52 | 40m | - / -8 | ON1DGN | -19 / - | 4 | Partial capture |
| 10-30 08:50 | 40m | - / - | DL1BBO | -8 / - | 2 | Partial capture |
| 10-30 08:43 | 40m | - / -12 | ON3ANY | -10 / - | 3 | ✓ Closing fragment |
| 10-30 08:35 | 40m | - / -12 | DH2NJS | -8 / - | 6 | ✓ Closing fragment |
| 10-30 08:35 | 40m | - / - | F4BYA | +2 / - | 4 | Partial capture |
| 10-20 12:30 | 40m | - / - | DL2ROB | -17 / - | 6 | Partial capture |
| 10-15 20:59 | 80m | - / -3 | ON4MAP | -18 / - | 3 | ✓ Closing fragment |
| 10-15 20:54 | 80m | - / -21 | PE0FK | 0 / - | 2 | ✓ Closing fragment |
| 10-15 20:45 | 80m | - / -20 | DO8JB | -9 / - | 5 | Partial capture |
| 10-15 19:25 | 40m | -14 / - | M9TEY | - / -3 | 2 | ✓ Closing fragment |
| 10-15 19:20 | 40m | -9 / - | R7CD | - / - | 2 | Partial capture |
| 10-15 19:12 | 80m | - / -8 | DO1UKR | 0 / - | 2 | ✓ Closing fragment |
| 10-15 19:04 | 80m | - / -13 | DO9KB | +10 / - | 10 | ✓ Closing fragment |
| 10-15 19:01 | 80m | - / -6 | DM5KM | +16 / - | 2 | ✓ Closing fragment |
| 10-15 18:56 | 80m | - / -21 | M9DNC | -11 / - | 3 | Partial capture |
| 10-15 18:35 | 80m | - / -2 | DJ3HW | +6 / - | 2 | ✓ Closing fragment |
| 10-15 17:44 | 40m | - / -23 | ES2AJ | -2 / - | 2 | Partial capture |
| 10-15 17:20 | 40m | - / -9 | DL2RPN | -10 / - | 2 | ✓ Closing fragment |
| 10-15 17:08 | 40m | - / -10 | OK7BB | 0 / - | 2 | Partial capture |
| 10-15 16:55 | 40m | -10 / -6 | DM4ZUL | +17 / - | 4 | ✓ Closing observed |
| 10-15 16:54 | 40m | -8 / - | S58M | - / - | 2 | Partial capture |
| 10-15 16:49 | 40m | - / -15 | DK5RL | +8 / - | 2 | ✓ Closing fragment |
| 10-15 16:32 | 40m | - / -8 | RM1B | +1 / - | 2 | ✓ Closing fragment |
| 10-15 16:13 | 40m | - / -3 | OK1UG | +10 / - | 2 | ✓ Closing fragment |
| 10-15 16:11 | 40m | - / +3 | DL3BQV | 0 / - | 2 | ✓ Closing fragment |
| 10-15 16:09 | 40m | - / - | R4FDK | -14 / - | 6 | Partial capture |
| 10-15 11:48 | 40m | - / - | OH3MB | -5 / - | 2 | Partial capture |
| 10-15 11:39 | 40m | - / -12 | DM5KM | -11 / - | 2 | ✓ Closing fragment |
| 10-15 11:31 | 40m | - / -12 | DL2VN | -11 / - | 4 | Partial capture |
| 10-15 11:27 | 40m | - / -6 | OH3MB | -11 / - | 2 | Partial capture |
| 10-15 11:24 | 40m | - / - | OH3MB | -8 / - | 2 | Partial capture |
| 10-15 11:20 | 40m | - / -6 | DL2USR | -3 / - | 2 | Partial capture |
| 10-15 11:13 | 40m | - / - | DJ0WJ | -7 / - | 2 | ✓ Closing fragment |
| 10-15 10:53 | 40m | - / +1 | DM5KK | -11 / - | 4 | ✓ Closing fragment |
| 10-15 10:52 | 40m | - / - | 9A7BB | -13 / - | 2 | Partial capture |
| 10-15 10:44 | 40m | - / - | 9A7BB | -12 / - | 2 | Partial capture |
| 10-15 10:21 | 40m | - / -9 | DL3FSC | -1 / - | 3 | ✓ Closing fragment |
| 10-15 10:17 | 40m | - / - | OH3MB | -6 / - | 2 | Partial capture |
| 10-13 12:24 | 40m | - / - | DJ0WJ | -8 / - | 2 | Partial capture |
| 10-13 12:22 | 40m | - / -8 | OT4R | -22 / - | 2 | Partial capture |
| 10-13 12:17 | 40m | - / -2 | DM2PE | -13 / - | 3 | ✓ Closing fragment |
| 10-12 18:18 | 40m | - / -7 | F4MXT/P | -2 / - | 2 | ✓ Closing fragment |
| 10-12 18:11 | 40m | - / -16 | F4JHO | -17 / - | 2 | ✓ Closing fragment |
| 10-12 17:58 | 40m | - / - | OS9T | -2 / - | 2 | ✓ Closing fragment |
| 10-12 17:48 | 40m | - / -15 | F5AKY | +1 / - | 3 | ✓ Closing fragment |
| 10-08 11:07 | 40m | - / -1 | DL0HAM | +1 / - | 9 | ✓ Closing fragment |
| 10-08 10:30 | 40m | - / -15 | IQ2AAH | -16 / - | 2 | ✓ Closing fragment |
| 09-29 21:59 | 60m | - / - | F5RRS | +2 / - | 4 | Partial capture |
| 09-29 21:48 | 80m | -20 / -9 | OE8DDX | +18 / - | 3 | ✓ Closing observed |
| 09-29 21:41 | 80m | - / -11 | F4CTJ | -6 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 084015 -13 793 DD4JN SP6AXW JO80 084330 -11 1174 DD4JN ON3ANY -12 (x3) 085045 -8 2831 DD4JN DL1BBO JO43 (x2) 085215 -24 1338 DD4JN ON1DGN -08 (x3) 085315 -12 857 DD4JN GJ0KYZ RR73 085345 -16 1338 DD4JN ON1DGN -08 143230 +2 1457 DD4JN DL8TV JN49 143330 -16 1276 DD4JN DD2FP JO31 143345 -12 764 CQ DD4JN JO31 143400 -21 2060 DD4JN SM7MDI JO76
UTC dB Audio Message 190745 +10 588 DD4JN DO9KB RR73 (x3) 191215 +2 911 DD4JN DO1UKR R-08 (x2) 204545 -12 902 DD4JN DO8JB JO32 (x5) 205415 +2 500 DD4JN PE0FK -21 (x2) 205915 -15 571 DD4JN ON4MAP R-03 (x3)
UTC dB Audio Message 215915 +1 1777 DD4JN F5RRS JN36 215915 -1 2312 DD4JN F5HNQ IN98 215930 -13 796 CQ DD4JN JO31 215945 +0 1777 DD4JN F5RRS JN36 (x3)
UTC dB Audio Message 184045 -17 997 DD4JN EA4IVO RR73 (x2) 192345 -3 937 DD4JN TA2PCB -08 192730 -10 1118 DD4JN EA5JHE RR73 185200 -5 570 CQ DD4JN JO31 185215 -4 2069 DD4JN RZ4FWA LO23 (x2) 185315 -12 1004 UT7NY DD4JN JO31 185315 -7 2068 DD4JN RZ4FWA LO23 (x2) 185500 -9 1115 G0FHT DD4JN JO31 185630 -10 1115 CQ DD4JN JO31 185745 -1 1119 DD4JN UT4QM KN77 190730 -5 542 PE1PBQ DD4JN JO31 190830 -2 542 CQ DD4JN JO31
UTC dB Audio Message 114645 -5 490 DD4JN IK4LZH R-01 (x2)
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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