JA4DND — 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 JA4DND, decoded by SO8OO in southeastern Poland. 229 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-11-05.
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 229 FT8 messages attributed to JA4DND as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 80 m (28%) and 20 m (7%). Most decodes (100%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-11-05 18:42 UTC
Observed FT8 message patterns
- Attributed sample
- 229 messages
- Active dates
- 20 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -13 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 55, strong (≥ -8 dB) 166.
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 JA4DND 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 JA4DND
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
- PM65 · 72 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,366 km (approx.)
- Last such locator decoded
- 2026-11-05 18:16 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 | JA4DND S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 18:42 | 40m | -2 / - | IW8CLL | -16 / - | 2 | ✓ Closing observed |
| 11-05 18:40 | 40m | - / -8 | R7RC | -10 / - | 3 | ✓ Closing fragment |
| 11-05 18:38 | 40m | - / -10 | EA3EDU | -16 / - | 6 | ✓ Closing fragment |
| 11-05 18:37 | 40m | - / - | LY1DX | +4 / - | 10 | Partial capture |
| 11-05 18:37 | 40m | -1 / -15 | EA2BFM | 0 / -5 | 6 | ✓ Full exchange observed |
| 11-05 18:36 | 40m | - / - | ON6AA | +1 / - | 9 | Partial capture |
| 11-05 18:36 | 40m | -2 / - | US5ZCO | -16 / -12 | 3 | ✓ Closing observed |
| 11-05 18:33 | 40m | - / -7 | R2FEA | 0 / - | 2 | ✓ Closing fragment |
| 11-05 18:33 | 40m | +1 / -14 | SV1AVT | -17 / -16 | 7 | Partial capture |
| 11-05 18:31 | 40m | -2 / - | OM8AKP | - / -16 | 2 | Partial capture |
| 11-05 18:30 | 40m | +1 / -2 | IK4RVY | -12 / -9 | 9 | ✓ Full exchange observed |
| 11-05 18:27 | 40m | - / - | LY1DX | +4 / - | 10 | Partial capture |
| 11-05 18:26 | 40m | - / -13 | SP3DOF | -6 / - | 4 | Partial capture |
| 11-05 18:26 | 40m | - / - | EA5OM | -12 / - | 3 | Partial capture |
| 11-05 18:25 | 40m | -4 / - | CT7BRV | -10 / -15 | 6 | Partial capture |
| 11-05 18:25 | 40m | -6 / - | YO8CVY | - / -8 | 2 | ✓ Closing fragment |
| 11-05 18:25 | 40m | - / -10 | S55A | -8 / - | 4 | ✓ Closing fragment |
| 11-05 18:24 | 40m | - / +2 | DL8GAM | -1 / - | 3 | ✓ Closing fragment |
| 11-05 18:22 | 40m | -10 / - | YO8SDC | - / -5 | 2 | ✓ Closing fragment |
| 11-05 18:20 | 40m | -8 / - | UA3FO | - / -7 | 2 | ✓ Closing fragment |
| 11-05 18:19 | 40m | - / -5 | LY1DY | +7 / - | 3 | ✓ Closing fragment |
| 11-05 18:19 | 40m | - / - | LY2PAD | -4 / - | 13 | Partial capture |
| 11-05 18:12 | 40m | -7 / -6 | C31KC | -8 / - | 9 | Partial capture |
| 11-05 18:08 | 40m | -6 / - | TC0TR | - / -23 | 4 | ✓ Closing fragment |
| 11-05 18:00 | 40m | -8 / -8 | G4IFX | -1 / -7 | 8 | ✓ Full exchange observed |
| 11-05 17:59 | 40m | -7 / -13 | IZ8EDJ | -8 / - | 3 | ✓ Closing observed |
| 11-05 17:59 | 40m | - / -6 | EA5EE | +2 / - | 3 | ✓ Closing fragment |
| 11-05 17:57 | 40m | -2 / -6 | LX1RFJ | -8 / - | 6 | ✓ Closing observed |
| 11-03 21:57 | 40m | +3 / - | R3DQB | - / -15 | 2 | ✓ Closing fragment |
| 11-03 21:56 | 40m | 0 / - | DL6USA | - / -8 | 2 | ✓ Closing fragment |
| 11-03 21:55 | 40m | +2 / - | YO2MKE | - / -14 | 2 | ✓ Closing fragment |
| 11-03 21:55 | 40m | - / - | M1FCV | -14 / - | 2 | Partial capture |
| 11-03 21:54 | 40m | +2 / -10 | R6FFB | +5 / -12 | 5 | ✓ Full exchange observed |
| 11-03 21:54 | 40m | - / - | F4MID | -4 / - | 2 | Partial capture |
| 11-03 21:53 | 40m | +2 / - | YO8AJG | - / -13 | 2 | ✓ Closing fragment |
| 11-03 21:52 | 40m | +2 / - | SQ2BXI | - / -18 | 2 | ✓ Closing fragment |
| 11-03 21:51 | 40m | -1 / - | BH3FZG | - / +3 | 2 | ✓ Closing fragment |
| 11-03 21:50 | 40m | 0 / - | RY0LAC | - / +2 | 2 | ✓ Closing fragment |
| 11-03 21:49 | 40m | 0 / - | YO2MKE | - / -13 | 2 | Partial capture |
| 11-03 21:47 | 40m | -2 / - | SP9Q | - / -16 | 2 | ✓ Closing fragment |
| 11-03 21:46 | 40m | -4 / - | IU8WQW | -5 / -13 | 2 | Partial capture |
| 11-03 21:45 | 40m | -2 / - | OK2VCR | - / -12 | 2 | ✓ Closing fragment |
| 11-03 21:44 | 40m | 0 / -3 | I8OHQ | -5 / -10 | 3 | ✓ Full exchange observed |
| 11-03 21:43 | 40m | -1 / - | DN2MM | - / -9 | 2 | ✓ Closing fragment |
| 11-03 21:42 | 40m | 0 / - | BI1AFK | - / -4 | 2 | ✓ Closing fragment |
| 11-03 21:38 | 40m | -1 / - | 5R8IC | - / -15 | 7 | ✓ Closing fragment |
| 11-03 21:34 | 40m | -2 / - | 5R8IC | - / - | 4 | Partial capture |
| 11-03 21:16 | 80m | -2 / - | EA1IOK | -14 / -18 | 4 | ✓ Closing observed |
| 11-03 21:11 | 80m | 0 / -8 | LA9GX | 0 / -15 | 10 | ✓ Full exchange observed |
| 11-03 21:09 | 80m | -2 / - | GI7LOU | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 184015 -17 1256 JA4DND EA3EDU R-10 184045 +5 2526 JA4DND LY1DX KO24 184045 -18 1256 JA4DND EA3EDU 73 184115 +7 2526 JA4DND LY1DX KO24 184115 -18 1256 JA4DND EA3EDU 73 184145 +4 1899 JA4DND ON6AA JO11 184145 +5 2526 JA4DND LY1DX KO24 184200 -2 832 IW8CLL JA4DND RR73 184215 -10 912 JA4DND R7RC -08 184215 +1 1900 JA4DND ON6AA JO11 184215 +2 2526 JA4DND LY1DX KO24 184215 -16 832 JA4DND IW8CLL 73 184245 -10 911 JA4DND R7RC RR73 184245 +2 1900 JA4DND ON6AA JO11 184245 +1 2526 JA4DND LY1DX KO24
UTC dB Audio Message 220300 -2 475 JA4DND S51XA JN75
UTC dB Audio Message 211130 +1 2110 JA4DND LA9GX R-08 211145 +2 2877 LA9GX JA4DND -19 211200 +2 2110 JA4DND LA9GX R-08 211215 -1 2877 LA9GX JA4DND -19 211230 -9 2903 JA4DND OH7WB KP31 211300 -4 2110 JA4DND LA9GX R-09 211315 +4 2877 LA9GX JA4DND RR73 211330 +5 2110 JA4DND LA9GX 73 211345 +3 2876 LA9GX JA4DND RR73 211400 -18 1614 JA4DND SP5ILO KO02 211500 -8 2904 JA4DND OH7WB KP31 211615 -2 2877 EA1IOK JA4DND -18 (x2) 211800 -14 1048 JA4DND EA1IOK 73 211845 +0 2877 EA1IOK JA4DND RR73
UTC dB Audio Message 200345 +4 2044 JA4DND YO2MTG KN05 200345 -10 401 JA4DND F4GGS IN78 192700 -11 3006 JA4DND PE0JBE JO32 (x5) 212945 -4 1041 JA4DND DM2SP JO62 (x3) 212230 -3 2156 JA4DND IZ8FWN -17 (x2) 212430 +7 2603 JA4DND E73S -12 (x2) 212700 -10 510 JA4DND F4HAB JN03
UTC dB Audio Message 210330 -4 2768 JA4DND SP1LON RR73 210330 -11 1015 JA4DND RR73; DL1UDO <...> -06 210330 +5 424 JA4DND EB3JT JN01 210430 -4 1457 JA4DND E77FN JN93 210500 +1 424 JA4DND PD7BDN JO22 210500 -5 1457 JA4DND E77FN R-15 210515 -9 424 E77FN JA4DND RR73 210530 -2 1457 JA4DND E77FN 73 210630 +6 424 JA4DND EB3JT JN01 (x3) 221300 -9 320 JA4DND EI5KO 73 221430 -12 2217 JA4DND GM4CXM R-13 (x2) 200630 -3 2154 JA4DND M8KKH JO01
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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