SP4BB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP4BB, decoded by SO8OO in southeastern Poland. 509 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-29 and 2026-10-01.
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 509 FT8 messages attributed to SP4BB as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (95%), followed by 80 m (5%). Most decodes (88%) fell within the six-hour window 08:00-14:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-10-01 11:15 UTC
Observed FT8 message patterns
- Attributed sample
- 509 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -15 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 195, strong (≥ -8 dB) 274.
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 SP4BB 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 SP4BB
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
- KO13 · 331 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 405 km (approx.)
- Last such locator decoded
- 2026-10-01 11:15 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 | SP4BB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-01 11:05 | 40m | -3 / - | DF3QX | - / -16 | 2 | ✓ Closing fragment |
| 10-01 11:00 | 40m | -8 / - | G1ZHD | - / -15 | 4 | ✓ Closing fragment |
| 10-01 10:57 | 40m | -10 / - | DL6CMF | - / -7 | 2 | ✓ Closing fragment |
| 10-01 10:50 | 40m | -4 / - | DL9KM | -2 / -3 | 4 | ✓ Closing observed |
| 10-01 10:49 | 40m | - / - | SP9DPI | -22 / - | 2 | Partial capture |
| 10-01 10:47 | 40m | -14 / - | SH5RJX | - / -12 | 3 | ✓ Closing fragment |
| 10-01 10:37 | 40m | -8 / - | F4GUK | - / -14 | 3 | ✓ Closing fragment |
| 10-01 10:35 | 40m | -13 / - | UB4FGK | - / -18 | 2 | ✓ Closing fragment |
| 10-01 10:32 | 40m | -10 / - | SQ9RHO | - / -12 | 3 | ✓ Closing fragment |
| 10-01 10:30 | 40m | -6 / +8 | YL3EK | -19 / +3 | 4 | ✓ Full exchange observed |
| 10-01 10:29 | 40m | -10 / -22 | UI4I | -21 / -3 | 3 | ✓ Full exchange observed |
| 10-01 10:25 | 40m | -11 / - | SQ4GXN | - / -4 | 2 | ✓ Closing fragment |
| 10-01 10:20 | 40m | -10 / -5 | US5WE | -12 / +2 | 4 | ✓ Full exchange observed |
| 10-01 10:18 | 40m | -13 / - | DL1BIB | - / -15 | 2 | ✓ Closing fragment |
| 10-01 10:15 | 40m | -10 / - | DF2KD | - / -15 | 2 | ✓ Closing fragment |
| 10-01 10:08 | 40m | -13 / - | DL6FCK | - / -16 | 2 | ✓ Closing fragment |
| 10-01 10:04 | 40m | -14 / - | DK1FIN | - / -17 | 2 | ✓ Closing fragment |
| 10-01 10:02 | 40m | -2 / - | LA2DMA | - / -16 | 2 | ✓ Closing fragment |
| 10-01 09:52 | 40m | -12 / - | PD2GJS | - / -10 | 2 | ✓ Closing fragment |
| 10-01 09:44 | 40m | -9 / -5 | SP5HQZ | +1 / -3 | 5 | ✓ Full exchange observed |
| 10-01 09:40 | 40m | -3 / - | F6BHK | - / -20 | 5 | ✓ Closing fragment |
| 10-01 09:37 | 40m | -10 / - | SP3AVS | - / -5 | 2 | ✓ Closing fragment |
| 10-01 09:31 | 40m | -1 / -12 | ON4KVI | -15 / -13 | 6 | ✓ Full exchange observed |
| 10-01 09:23 | 40m | -16 / -2 | DG3YEV | +2 / 0 | 5 | ✓ Full exchange observed |
| 10-01 09:18 | 40m | -16 / - | RA3LJ | - / -2 | 2 | ✓ Closing fragment |
| 10-01 09:15 | 40m | -14 / +5 | SP9W | -16 / -1 | 4 | ✓ Full exchange observed |
| 10-01 09:10 | 40m | -16 / - | G3XWH | - / -4 | 2 | ✓ Closing fragment |
| 10-01 09:06 | 40m | -16 / -18 | DH1AKG | -7 / -2 | 8 | ✓ Full exchange observed |
| 10-01 09:05 | 40m | - / -10 | F6BEC | -12 / - | 2 | ✓ Closing fragment |
| 10-01 09:03 | 40m | - / - | DH1AKG | -5 / - | 3 | Partial capture |
| 10-01 09:00 | 40m | - / -9 | DL6EL | -14 / - | 3 | ✓ Closing fragment |
| 10-01 08:56 | 40m | - / -24 | R6OBN | -14 / - | 2 | ✓ Closing fragment |
| 10-01 08:50 | 40m | - / -9 | DL5DQZ | -4 / - | 2 | ✓ Closing fragment |
| 10-01 08:47 | 40m | - / - | PA7ZZ | -16 / - | 2 | Partial capture |
| 10-01 08:40 | 40m | -15 / - | DL6REX | -20 / -9 | 8 | ✓ Closing observed |
| 10-01 08:32 | 40m | -17 / - | DL2HRT | -1 / +1 | 6 | ✓ Closing observed |
| 10-01 08:30 | 40m | -14 / -4 | OK1HEH | -11 / 0 | 4 | ✓ Full exchange observed |
| 10-01 08:28 | 40m | -12 / - | IZ5RKH | - / -4 | 2 | ✓ Closing fragment |
| 09-30 14:33 | 40m | -9 / - | R8AU | - / -16 | 8 | Partial capture |
| 09-30 14:32 | 40m | -4 / -1 | SP5KCR | -8 / -10 | 5 | ✓ Full exchange observed |
| 09-30 14:29 | 40m | - / -16 | UB4CJS | -22 / - | 3 | Partial capture |
| 09-30 14:29 | 40m | -10 / - | G7EVY | - / -12 | 2 | Partial capture |
| 09-30 14:25 | 40m | -9 / 0 | YL3AKH | +2 / +1 | 5 | ✓ Full exchange observed |
| 09-30 14:24 | 40m | - / +2 | DK7ZT | -10 / - | 3 | Partial capture |
| 09-30 14:24 | 40m | - / - | HG8LXL | +2 / - | 2 | Partial capture |
| 09-30 14:23 | 40m | -4 / -2 | DL3FSC | +3 / -1 | 5 | ✓ Full exchange observed |
| 09-30 13:33 | 40m | -8 / - | ON8WR | - / -12 | 8 | Partial capture |
| 09-30 13:28 | 40m | -7 / +1 | SP7AAO | +6 / +3 | 5 | ✓ Full exchange observed |
| 09-30 13:24 | 40m | -3 / +2 | DL1SUZ | +5 / -5 | 5 | ✓ Full exchange observed |
| 09-30 13:23 | 40m | - / - | SQ7LQJ | -14 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 110745 -15 1434 CQ SP4BB KO13 (x15)
UTC dB Audio Message 161030 +9 514 SP4BB OE5DML 73 161045 +9 514 CQ SP4BB KO13 161100 +1 2409 SP4BB IQ4JO JN63 161115 +13 514 CQ SP4BB KO13 161130 +6 2409 SP4BB IQ4JO JN63 161145 +12 514 CQ SP4BB KO13 161200 +5 499 SP4BB IQ4JO JN63 161215 +15 514 IQ4JO SP4BB -08 161230 +4 506 SP4BB IQ4JO R-15 161245 +15 514 IQ4JO SP4BB RRR 161300 +5 506 SP4BB IQ4JO 73 161315 +16 514 CQ SP4BB KO13 (x4)
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee