SP3RK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP3RK, decoded by SO8OO in southeastern Poland. 782 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-09-11.
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 782 FT8 messages attributed to SP3RK 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 (32%), followed by 40 m (30%) and 60 m (14%). Most decodes (63%) 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 (61%); the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-09-11 20:35 UTC
Observed FT8 message patterns
- Attributed sample
- 782 messages
- Active dates
- 18 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -17 to +9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 118, moderate (-15 to -9 dB) 189, strong (≥ -8 dB) 475.
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 SP3RK 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 SP3RK
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
- JO71 · 401 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 508 km (approx.)
- Last such locator decoded
- 2026-09-11 20:33 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 | SP3RK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-11 20:35 | 160m | -4 / - | F4ISR | - / -25 | 2 | Partial capture |
| 09-11 20:30 | 160m | -14 / - | F4ISR | - / -21 | 4 | Partial capture |
| 09-11 20:24 | 160m | -16 / -13 | DO3VE | -4 / -6 | 6 | ✓ Full exchange observed |
| 09-11 20:24 | 160m | -17 / - | DL1KYF/P | - / -15 | 2 | ✓ Closing fragment |
| 09-11 18:53 | 60m | -4 / - | IU2PKC | - / -9 | 2 | ✓ Closing fragment |
| 09-11 18:50 | 60m | -5 / -8 | SP9UOP | +2 / -2 | 3 | ✓ Full exchange observed |
| 09-11 18:46 | 60m | +4 / - | DJ7BU | - / +3 | 2 | ✓ Closing fragment |
| 09-11 18:44 | 60m | +2 / - | DC9JVN | - / -10 | 2 | ✓ Closing fragment |
| 09-11 18:41 | 60m | +2 / -2 | DL7UKM | -2 / +3 | 7 | ✓ Full exchange observed |
| 09-11 18:40 | 60m | -1 / +3 | OM5JG | +2 / +8 | 6 | ✓ Full exchange observed |
| 09-11 18:37 | 60m | -5 / -3 | DL1UDO | -4 / +3 | 5 | ✓ Full exchange observed |
| 09-11 18:37 | 60m | -5 / - | SM6XVI | -15 / -17 | 5 | ✓ Closing observed |
| 09-11 18:35 | 60m | -6 / -4 | DK7UY | +11 / - | 6 | ✓ Full exchange observed |
| 09-11 18:35 | 60m | -4 / - | OH1LI | - / -17 | 2 | ✓ Closing fragment |
| 09-11 18:33 | 60m | -4 / +1 | DK1XAM | -4 / 0 | 5 | ✓ Full exchange observed |
| 09-11 18:31 | 60m | -3 / +8 | PF1B | -7 / -9 | 5 | ✓ Full exchange observed |
| 09-11 18:28 | 60m | -3 / - | M1EPZ | -10 / -1 | 8 | Partial capture |
| 09-11 18:27 | 60m | -4 / -6 | SP1LIS | -10 / -21 | 4 | ✓ Full exchange observed |
| 09-11 18:24 | 60m | -4 / -4 | G4JYU | -4 / -7 | 5 | ✓ Full exchange observed |
| 09-11 18:21 | 60m | -4 / +1 | SM7XON | -10 / +5 | 9 | ✓ Full exchange observed |
| 09-11 18:08 | 60m | - / -1 | OZ1SMB | -7 / - | 4 | ✓ Closing fragment |
| 09-11 18:03 | 60m | -1 / - | DL1NDN | - / -7 | 2 | ✓ Closing fragment |
| 09-11 18:01 | 60m | -4 / - | G7RVH | - / -15 | 2 | ✓ Closing fragment |
| 09-11 18:01 | 60m | -2 / -10 | ES5RY | -8 / +3 | 6 | ✓ Full exchange observed |
| 09-11 17:58 | 60m | +2 / -10 | G6GA | 0 / -2 | 6 | ✓ Full exchange observed |
| 09-11 17:57 | 60m | -4 / - | IU2KNG | - / +5 | 2 | ✓ Closing fragment |
| 09-11 17:57 | 60m | +2 / - | PI4TX | -9 / -9 | 3 | Partial capture |
| 09-11 17:55 | 60m | -4 / -1 | LY8O | -1 / - | 5 | ✓ Full exchange observed |
| 09-07 20:55 | 160m | -9 / -18 | R2EA | +8 / -3 | 4 | ✓ Full exchange observed |
| 09-07 20:53 | 160m | -11 / -14 | UA4FKT | +6 / -3 | 9 | ✓ Full exchange observed |
| 09-07 20:51 | 160m | -12 / -10 | IK0XBX | -1 / -2 | 6 | ✓ Full exchange observed |
| 09-01 18:54 | 80m | +2 / -21 | SV3SIM | +3 / -5 | 10 | ✓ Full exchange observed |
| 09-01 15:07 | 40m | +4 / - | SA3KAK | - / -9 | 4 | Partial capture |
| 09-01 15:06 | 40m | +4 / - | DJ7XY | - / -10 | 2 | ✓ Closing fragment |
| 08-31 21:00 | 160m | - / +3 | SP3BPU | +18 / - | 4 | ✓ Closing fragment |
| 08-31 20:58 | 160m | -10 / -12 | HB9EFK | +2 / 0 | 4 | ✓ Full exchange observed |
| 08-31 20:54 | 160m | -13 / - | EA4HPY | - / - | 4 | Partial capture |
| 08-31 20:54 | 160m | - / - | SP3BPU | +8 / - | 3 | Partial capture |
| 08-31 20:53 | 160m | -14 / -6 | SP2GJI | -8 / +10 | 4 | ✓ Full exchange observed |
| 08-31 20:44 | 160m | -24 / -19 | UT5ECZ | +6 / - | 4 | ✓ Closing observed |
| 08-31 20:42 | 160m | -21 / -10 | OH5BM | -20 / -7 | 4 | ✓ Full exchange observed |
| 08-31 20:33 | 160m | -18 / - | HA8BE | - / - | 2 | Partial capture |
| 08-31 20:27 | 160m | -12 / - | F9IE | - / - | 2 | Partial capture |
| 08-31 20:24 | 160m | -8 / - | IV3HYD | - / - | 2 | Partial capture |
| 08-31 20:18 | 160m | - / - | OK2USM | -14 / - | 2 | ✓ Closing fragment |
| 08-31 20:18 | 160m | -24 / -4 | SP9UPH | +7 / 0 | 5 | ✓ Full exchange observed |
| 08-31 20:15 | 160m | -18 / +1 | OK1DXR | -2 / +4 | 6 | ✓ Full exchange observed |
| 08-31 20:14 | 160m | -16 / +4 | OZ1ADL | +1 / - | 3 | ✓ Closing observed |
| 08-30 09:02 | 10m | - / -3 | EX8ABR | -13 / - | 2 | ✓ Closing fragment |
| 08-15 16:06 | 40m | -11 / - | M0PFX | - / -21 | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 202530 -11 664 SP3RK DO3VE R-13 202545 -16 2257 DO3VE SP3RK RR73 202600 -3 664 SP3RK DO3VE 73 202615 -19 2257 CQ SP3RK JO71 202715 -14 2256 9A4ZM SP3RK -09 202915 -13 1043 SM2LIY SP3RK JO71 202945 -14 1043 CQ SP3RK JO71 203045 -17 1043 F4ISR SP3RK R-21 (x4) 203245 -18 1043 CQ SP3RK JO71 (x2) 203515 -6 2715 F4ISR SP3RK R-25 (x2)
UTC dB Audio Message 185015 +2 1905 SP3RK SP9UOP R-08 (x2) 185200 -6 1209 CQ SP3RK JO71 (x3) 185330 -2 1208 IU2PKC SP3RK -09 (x2) 185430 +1 1208 CQ SP3RK JO71 (x8)
UTC dB Audio Message 211345 +14 2267 D2UY SP3RK JO71 211530 -21 2269 SP3RK D2UY -16 (x2) 185445 -6 2344 SV3SIM SP3RK JO71 (x3) 185630 +8 2345 SP3RK SV3SIM -21 185645 -1 2345 SV3SIM SP3RK R-05 185700 +7 2345 SP3RK SV3SIM RR73 185715 +7 2345 SV3SIM SP3RK R-05 185730 +0 2345 SP3RK SV3SIM RR73 185745 +1 2345 SV3SIM SP3RK 73 185800 -3 2345 SP3RK SV3SIM 73 190000 +6 851 RA0AF SP3RK JO71 190230 +18 480 <...> SP3RK JO71
UTC dB Audio Message 160430 -11 1039 DF2GW SP3RK -21 (x2) 160600 -15 1039 CQ SP3RK JO71 160630 -14 1039 M0PFX SP3RK -21 (x4) 160930 -13 1039 CQ SP3RK JO71 (x2) 150615 +5 1452 DJ7XY SP3RK -10 (x2) 150715 +5 1452 SA3KAK SP3RK -09 (x4)
UTC dB Audio Message 200430 -15 2115 SP3RK EA5ET IM99 200600 -13 1115 SP3RK S55A JN65 (x4) 161115 -10 2569 SP3RK R2EA -15 164330 -22 1548 SP3RK TA2R KN41 (x2) 170930 +0 1191 SP3RK UA3ZQN KO90 171600 -18 1501 SP3RK US3LX KN89 190315 +3 776 SP3RK Z61DX +25 (x2) 190015 -1 916 SP3RK CT3MD +06 090200 -12 1375 SP3RK EX8ABR -03 (x2)
UTC dB Audio Message 211130 -4 528 SP3RK DL1FLW JO61 211230 -6 529 SP3RK PA2KV R+10 (x2) 211330 -3 528 SP3RK DL1FLW JO61 (x5) 212000 -8 529 SP3RK DB5HA JO31 (x4) 065830 -14 1001 SP3RK MM7CEH IO85 (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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