S52D — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving S52D, decoded by SO8OO in southeastern Poland. 7,026 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 110 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-05.
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 7,026 FT8 messages attributed to S52D as the transmitting token by decoded message structure across 110 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (40%), followed by 40 m (38%) and 80 m (14%). The busiest six-hour window was 19:00-01:00 UTC, containing 49% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was +0.8 dB.
Overview
Bands
Last attributed message: 2026-10-05 04:41 UTC
Observed FT8 message patterns
- Attributed sample
- 7,026 messages
- Active dates
- 110 UTC dates
- Estimated median S/N
- +0.8 dB
- Estimated 10th-90th percentile
- -11.8 to +12 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 283, moderate (-15 to -9 dB) 937, strong (≥ -8 dB) 5,806.
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 S52D 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 S52D
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
- JN76 · 4,455 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 631 km (approx.)
- Last such locator decoded
- 2026-10-05 04:25 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 | S52D S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-05 04:24 | 40m | -10 / - | SM/W9YK | - / - | 3 | Partial capture |
| 10-05 01:56 | 40m | +4 / - | N4FIG | - / -15 | 3 | ✓ Closing fragment |
| 10-05 01:30 | 40m | -10 / - | NA4GB | - / - | 2 | Partial capture |
| 10-05 01:21 | 40m | -1 / - | PY4CRC | - / -18 | 4 | ✓ Closing fragment |
| 10-04 23:02 | 80m | +4 / - | SP5DFK/QRP | - / - | 4 | Partial capture |
| 10-04 22:59 | 80m | +12 / - | RO2E/M | - / - | 2 | Partial capture |
| 10-04 22:42 | 80m | +15 / -7 | BD8BTP | -13 / -21 | 4 | ✓ Full exchange observed |
| 10-04 22:27 | 80m | +9 / - | SP5DFK/QRP | - / -6 | 2 | Partial capture |
| 10-04 19:45 | 160m | - / - | SQ3RX | -2 / - | 2 | Partial capture |
| 10-04 19:44 | 160m | +6 / - | UD4F | - / - | 3 | Partial capture |
| 10-04 19:44 | 160m | +8 / +7 | F4BPO | +1 / -2 | 8 | ✓ Full exchange observed |
| 10-04 19:13 | 160m | +1 / - | SM1NJC | - / - | 3 | Partial capture |
| 10-04 16:41 | 80m | - / -1 | RO2E/M | -13 / - | 2 | Partial capture |
| 10-04 16:40 | 80m | +22 / - | RK3YWS/P | - / -14 | 4 | Partial capture |
| 10-04 16:08 | 80m | +8 / - | R3DPZ | - / - | 4 | Partial capture |
| 10-04 15:43 | 80m | +17 / - | RO2E/M | - / -13 | 2 | Partial capture |
| 10-04 05:49 | 40m | +4 / - | F4HSB | -20 / -5 | 7 | ✓ Full exchange observed |
| 10-04 05:43 | 40m | +13 / -5 | YL3VN | -3 / -14 | 5 | ✓ Full exchange observed |
| 10-04 05:11 | 80m | +10 / - | C5R | - / - | 4 | Partial capture |
| 10-04 04:58 | 80m | +9 / - | C5R | - / - | 4 | Partial capture |
| 10-04 04:33 | 80m | +7 / - | C5R | - / - | 4 | Partial capture |
| 10-04 04:26 | 80m | +20 / - | VE2XEN | - / -20 | 5 | ✓ Closing fragment |
| 10-04 03:30 | 80m | +9 / - | C5R | - / - | 4 | Partial capture |
| 10-04 03:28 | 80m | +10 / - | OD5XX | - / - | 2 | Partial capture |
| 10-04 03:04 | 80m | +15 / - | C5R | - / - | 2 | Partial capture |
| 10-04 02:44 | 80m | +14 / - | C5R | - / - | 3 | Partial capture |
| 10-04 02:31 | 80m | +6 / - | C5R | - / - | 2 | Partial capture |
| 10-04 02:25 | 80m | +14 / - | LB5UK | - / -24 | 11 | Partial capture |
| 10-04 02:15 | 80m | +3 / - | C5R | - / - | 3 | Partial capture |
| 10-04 02:13 | 80m | +20 / - | DO8JB | - / -3 | 3 | ✓ Closing fragment |
| 10-04 02:09 | 80m | +20 / - | HI6M | - / -22 | 8 | ✓ Closing fragment |
| 10-04 02:02 | 80m | +12 / - | C5R | - / - | 2 | Partial capture |
| 10-04 01:37 | 80m | +19 / - | EW6MP | - / +8 | 3 | ✓ Closing fragment |
| 10-04 01:07 | 80m | +8 / - | C5R | - / - | 3 | Partial capture |
| 10-04 00:55 | 80m | +13 / - | R4HHN | -13 / -7 | 5 | ✓ Closing observed |
| 10-04 00:46 | 80m | +9 / - | C5R | - / - | 12 | Partial capture |
| 10-04 00:38 | 80m | +9 / -4 | IU5HIU | -12 / -15 | 5 | ✓ Full exchange observed |
| 10-04 00:33 | 80m | +9 / - | C5R | - / -23 | 9 | Partial capture |
| 10-03 22:49 | 80m | +12 / - | RW9MZ | - / -21 | 2 | ✓ Closing fragment |
| 10-03 22:45 | 80m | +9 / - | RW9MZ | - / - | 4 | Partial capture |
| 10-03 22:33 | 80m | +12 / -10 | RK3YWS/P | +6 / -3 | 4 | ✓ Full exchange observed |
| 10-03 22:29 | 80m | +10 / - | RK3YWS/P | - / - | 2 | Partial capture |
| 10-03 22:24 | 80m | +8 / - | RW9MZ | - / - | 4 | Partial capture |
| 10-03 21:47 | 80m | +12 / - | RK3YWS/P | - / - | 4 | Partial capture |
| 10-03 21:36 | 80m | +6 / - | RK3YWS/P | - / - | 2 | Partial capture |
| 10-03 20:53 | 80m | +18 / - | JA9RRH | - / - | 3 | Partial capture |
| 10-03 20:19 | 80m | +17 / - | UA4LGX | - / - | 2 | Partial capture |
| 10-03 17:17 | 160m | +14 / - | RA0ADQ | - / - | 5 | Partial capture |
| 10-03 17:15 | 160m | +19 / - | IS0BQE | -24 / -15 | 4 | ✓ Closing observed |
| 10-03 17:13 | 160m | +13 / - | RO2E/P | - / -18 | 6 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 012315 -3 2112 PY4CRC S52D 73 013000 -10 1743 NA4GB S52D JN76 (x2) 014245 +10 2802 N4FIG S52D JN76 (x5) 020430 -14 820 KQ4NYF S52D 73 034900 -18 1748 SP6CA S52D JN76 042100 -4 1512 IT9ACJ/ISUB S52D JN76 042400 -10 1532 SM/W9YK S52D JN76 (x3) 044130 -5 1005 OE/DL6CGU S52D R-16
UTC dB Audio Message 220245 +7 1073 WF2A S52D JN76 221845 +21 314 UB0SMX/P S52D JN76 221915 +15 1074 WF2A S52D JN76 222700 +10 1177 SP5DFK/QRP S52D JN76 (x2) 224200 +15 671 BD8BTP S52D JN76 224215 -13 601 S52D BD8BTP -07 224230 +16 671 BD8BTP S52D R-21 (x2) 225900 +13 2147 RO2E/M S52D JN76 (x2) 230230 +7 1359 SP5DFK/QRP S52D JN76 (x4)
UTC dB Audio Message 191415 +3 1809 SM1NJC S52D JN76 (x2) 194415 +1 1525 S52D F4BPO JN36 194430 +6 1196 UD4F S52D JN76 194445 -1 1525 S52D F4BPO JN36 194500 +3 1196 UD4F S52D JN76 194515 -4 1316 S52D SQ3RX JO81 194530 +10 1196 UD4F S52D JN76 194545 +0 1315 S52D SQ3RX JO81 194545 +2 1525 S52D F4BPO JN36 194600 +7 1594 F4BPO S52D -02 194615 +4 1525 S52D F4BPO R+07 194630 +10 1594 F4BPO S52D RRR 194645 +1 1525 S52D F4BPO 73 194700 +7 1594 F4BPO S52D 73
UTC dB Audio Message 232715 +7 1102 IZ3XBL S52D 73 232730 -14 1246 S52D DL9KM JN68 232745 +2 1257 DL9KM S52D -16 232800 -18 1246 S52D DL9KM R+03 232815 +2 1257 DL9KM S52D RRR 232830 -20 1246 S52D DL9KM 73 232845 +3 1257 DL9KM S52D 73 002130 +3 2461 S52D S57TW +04 (x2) 050830 +16 2758 ZF1EJ S52D JN76 (x4) 232745 -11 367 9T0MD S52D JN76 (x2)
UTC dB Audio Message 201315 +3 2595 <RV9CX/0> S52D R-21 (x15)
UTC dB Audio Message 125900 -5 617 S52D SV2CLJ KN10 (x2) 073700 -8 830 Z32BM S52D JN76 (x7) 075130 -14 2275 R6ZI S52D JN76 081100 -21 1325 UB3BGL S52D JN76 (x3) 081300 -19 1339 SP3DUG S52D JN76
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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