SP5JMA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP5JMA, decoded by SO8OO in southeastern Poland. 2,588 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 54 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-12.
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 2,588 FT8 messages attributed to SP5JMA as the transmitting token by decoded message structure across 54 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (92%), followed by 80 m (4%) and 40 m (2%). Most decodes (81%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was +3 dB.
Overview
Bands
Last attributed message: 2026-10-12 20:16 UTC
Observed FT8 message patterns
- Attributed sample
- 2,588 messages
- Active dates
- 54 UTC dates
- Estimated median S/N
- +3 dB
- Estimated 10th-90th percentile
- -8 to +10 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 178, strong (≥ -8 dB) 2,363.
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 SP5JMA 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 SP5JMA
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
- KO02 · 1,450 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 290 km (approx.)
- Last such locator decoded
- 2026-10-12 20:16 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 | SP5JMA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-14 04:42 | 60m | - / -14 | LZ2HN | +4 / - | 2 | ✓ Closing fragment |
| 10-12 20:05 | 60m | - / -5 | MM0JTV | -8 / - | 2 | Partial capture |
| 10-12 20:04 | 60m | - / -6 | IW3HXR | 0 / - | 2 | ✓ Closing fragment |
| 10-12 20:00 | 60m | - / -10 | HB9FWB | -8 / - | 2 | ✓ Closing fragment |
| 10-12 19:56 | 60m | - / -12 | 9A9N | -2 / - | 2 | ✓ Closing fragment |
| 10-12 19:48 | 60m | - / -16 | PC9K | -17 / - | 3 | ✓ Closing fragment |
| 10-12 19:31 | 60m | - / -9 | BD8ENU | -7 / - | 2 | ✓ Closing fragment |
| 10-09 23:42 | 60m | -11 / - | A92AE | - / - | 9 | Partial capture |
| 10-09 23:39 | 60m | -5 / - | VO1NC | - / -16 | 5 | ✓ Closing fragment |
| 10-09 23:38 | 60m | -6 / -2 | 5B4AMX | -8 / -3 | 5 | ✓ Full exchange observed |
| 10-09 20:21 | 60m | -13 / - | A92AE | - / - | 4 | Partial capture |
| 10-09 19:27 | 60m | +2 / -13 | SQ7BFC | -15 / -12 | 6 | ✓ Full exchange observed |
| 10-09 19:24 | 60m | -3 / - | SV8DUU | - / -20 | 3 | ✓ Closing fragment |
| 10-09 19:21 | 60m | -8 / +5 | F4HSB | -19 / - | 7 | ✓ Closing observed |
| 10-09 19:17 | 60m | - / -11 | PA3FET | -14 / - | 3 | Partial capture |
| 10-09 19:13 | 60m | +1 / -10 | EA7GXD | -10 / -7 | 8 | ✓ Full exchange observed |
| 10-09 19:06 | 60m | +3 / -4 | 9K2GR | -8 / -2 | 13 | ✓ Full exchange observed |
| 10-09 18:26 | 60m | +7 / -6 | 9A7R | +9 / -9 | 4 | ✓ Full exchange observed |
| 10-09 18:20 | 60m | +4 / -16 | 5B4AAB | -9 / - | 9 | ✓ Closing observed |
| 10-09 18:15 | 60m | +4 / - | 5B4AAB | - / - | 2 | Partial capture |
| 10-09 16:49 | 60m | +3 / - | A92AE | - / - | 7 | Partial capture |
| 10-09 16:42 | 60m | +6 / -15 | DL1IP | -10 / -5 | 5 | ✓ Full exchange observed |
| 10-09 16:41 | 60m | +10 / - | SN5MV | - / - | 2 | Partial capture |
| 10-09 16:39 | 60m | +6 / -3 | 4O/DL1FDH | -8 / -5 | 5 | Partial capture |
| 10-08 19:34 | 60m | +4 / - | PA3DTR | -11 / -17 | 4 | ✓ Closing observed |
| 10-08 19:30 | 60m | -1 / -14 | EA6LU | -17 / -16 | 10 | ✓ Full exchange observed |
| 10-08 19:27 | 60m | +1 / +6 | OH3KRH | -21 / -10 | 7 | ✓ Full exchange observed |
| 10-08 19:24 | 60m | -7 / 0 | S51DI | -2 / -6 | 5 | ✓ Full exchange observed |
| 10-08 19:20 | 60m | -1 / -4 | DF7RG | +11 / -1 | 7 | ✓ Full exchange observed |
| 10-08 19:17 | 60m | 0 / -14 | M0SSK | -10 / -18 | 7 | ✓ Full exchange observed |
| 10-08 19:16 | 60m | +3 / - | DL2CW | - / -20 | 3 | ✓ Closing fragment |
| 10-08 19:14 | 60m | +1 / - | PI4TX | - / - | 2 | Partial capture |
| 10-08 19:12 | 60m | -1 / +1 | DL5BTE | -7 / +2 | 6 | ✓ Full exchange observed |
| 10-08 19:10 | 60m | 0 / -4 | G0ABI | +2 / -2 | 8 | ✓ Full exchange observed |
| 10-08 19:08 | 60m | +4 / +2 | ES5MG | -7 / -5 | 5 | ✓ Full exchange observed |
| 10-08 04:57 | 60m | - / -5 | F4LRA | -12 / - | 2 | ✓ Closing fragment |
| 10-08 04:55 | 60m | - / -17 | SV9BMG | -18 / - | 2 | ✓ Closing fragment |
| 10-08 04:52 | 60m | - / +1 | DL2KBX | +8 / - | 2 | ✓ Closing fragment |
| 10-08 04:50 | 60m | - / -5 | SV1YH | -3 / - | 2 | ✓ Closing fragment |
| 10-08 04:48 | 60m | - / -9 | E74K | +2 / - | 2 | ✓ Closing fragment |
| 10-07 19:55 | 60m | - / +7 | 9A3NF | -7 / - | 2 | ✓ Closing fragment |
| 10-07 19:39 | 60m | - / +6 | ON1ACB | -2 / - | 2 | ✓ Closing fragment |
| 10-07 19:26 | 60m | - / -17 | PH2M | +4 / - | 2 | ✓ Closing fragment |
| 10-07 19:24 | 60m | - / -14 | IZ0RPS | -1 / - | 2 | ✓ Closing fragment |
| 10-07 19:21 | 60m | - / -11 | IK4POB | 0 / - | 2 | ✓ Closing fragment |
| 10-07 19:19 | 60m | - / -4 | RK9S | -12 / - | 2 | ✓ Closing fragment |
| 10-07 18:24 | 60m | -10 / +9 | OZ6FH | -4 / - | 3 | ✓ Closing observed |
| 10-07 18:21 | 60m | -6 / - | PE1NLQ | - / - | 4 | Partial capture |
| 10-07 18:19 | 60m | 0 / - | GU4YBW | - / -14 | 2 | Partial capture |
| 10-06 20:21 | 60m | -9 / -8 | F6BBQ | -4 / -5 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 194815 -18 2037 SP5JMA PC9K -16 (x3) 195045 -9 811 SP5JMA M0DSK 73 195615 -2 896 SP5JMA 9A9N -12 (x2) 200015 -10 2336 SP5JMA HB9FWB -10 (x2) 200445 +0 1364 SP5JMA IW3HXR -06 200515 -8 619 SP5JMA MM0JTV -05 200515 +0 1396 SP5JMA IW3HXR RR73 200545 -7 618 SP5JMA MM0JTV IO75 201645 -16 2473 A92AE SP5JMA KO02 044215 +5 1608 SP5JMA LZ2HN -14 (x2)
UTC dB Audio Message 222330 -4 1696 SP5JMA EW8AAC -10 222345 -1 965 EW8AAC SP5JMA R-06 222400 -4 1696 SP5JMA EW8AAC RR73 222415 -5 965 EW8AAC SP5JMA 73 214900 -2 479 LB6MJ SP5JMA R-04 (x2) 215000 -8 479 OH3GBW SP5JMA KO02 215030 -6 479 DO9POL SP5JMA KO02 (x2) 215200 -8 480 ON3VZ SP5JMA KO02 (x2) 215245 -17 1053 SP5JMA ON3VZ -16 215300 -9 479 ON3VZ SP5JMA R-12 215315 -9 1053 SP5JMA ON3VZ RR73 215330 -5 479 ON3VZ SP5JMA 73
UTC dB Audio Message 212715 -12 425 IK6BSN SP5JMA KO02 212815 -17 425 RI1FJZ SP5JMA KO02
UTC dB Audio Message 193930 -22 1347 SP5JMA 9A170TESLA -10 193945 -9 494 HF7CATS SP5JMA R-08 194200 -11 493 ZS6NL SP5JMA KO02 (x6) 095430 -11 1864 SP5JMA SQ9M -03 132200 -23 1975 SP5JMA UW7CN KN59 132415 -22 1912 SP5JMA SP9XG RR73 133400 -18 1047 DL1RTS SP5JMA R-04 133415 -16 2289 SP5JMA DL1RTS RR73 210630 -18 2185 SP5JMA 4O/IK3BNO -07 211130 -5 1128 SP5JMA HB10GBT +11
UTC dB Audio Message 091300 +6 485 SP5JMA DN9BT JO40 (x2) 091900 -2 1440 SP5JMA IK7IMK +14 (x2) 092345 -20 1752 SP5JMA DK5ON +15 (x2) 092845 -20 2032 SP5JMA DK2CC RR73 114900 -15 813 SP5JMA SV6DBG RR73 165315 -8 2288 SP5JMA IK1ZOV +01 (x2) 120045 -9 983 SP5JMA SV1CQN +21 (x2) 121945 -19 1383 SP5JMA LZ2IP +01
UTC dB Audio Message 171130 -2 583 BD8FOD SP5JMA KO02 (x2) 171230 +2 582 S21VHF SP5JMA KO02 (x2) 171330 +2 583 Z33F SP5JMA KO02 (x3) 171845 +4 530 YB3CUG SP5JMA KO02 (x5) 172145 +5 529 JA1BJY SP5JMA KO02 (x3)
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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