T77BL — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving T77BL, decoded by SO8OO in southeastern Poland. 689 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-16.
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 689 FT8 messages attributed to T77BL as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (92%), followed by 10 m (8%). Most decodes (98%) fell within the six-hour window 04:00-10:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was -1 dB.
Overview
Bands
Last attributed message: 2026-08-16 06:14 UTC
Observed FT8 message patterns
- Attributed sample
- 689 messages
- Active dates
- 25 UTC dates
- Estimated median S/N
- -1 dB
- Estimated 10th-90th percentile
- -10 to +6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 85, strong (≥ -8 dB) 594.
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 T77BL 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 T77BL
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
- JN63 · 119 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 979 km (approx.)
- Last such locator decoded
- 2026-08-16 06:13 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 | T77BL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 05:59 | 20m | - / -21 | G0ODP | -10 / - | 4 | Partial capture |
| 08-23 05:53 | 20m | - / -15 | RY3F | -10 / - | 2 | ✓ Closing fragment |
| 08-23 05:52 | 20m | - / -8 | KJ4QVJ | 0 / - | 2 | ✓ Closing fragment |
| 08-23 05:48 | 20m | - / -14 | VK1HW | -18 / - | 3 | ✓ Closing fragment |
| 08-23 05:47 | 20m | - / - | EB7HQE | -15 / - | 2 | ✓ Closing fragment |
| 08-23 05:47 | 20m | - / -13 | RO6OT | -4 / - | 7 | ✓ Closing fragment |
| 08-23 05:46 | 20m | - / - | G0ODP | -9 / - | 17 | Partial capture |
| 08-23 05:46 | 20m | - / -12 | UA3ROJ | -8 / - | 2 | ✓ Closing fragment |
| 08-23 05:46 | 20m | - / -25 | KB3CCJ | -7 / - | 2 | Partial capture |
| 08-23 05:45 | 20m | - / +3 | F4AYI | +9 / - | 3 | ✓ Closing fragment |
| 08-23 05:45 | 20m | - / - | F4BYA | -2 / - | 4 | Partial capture |
| 08-23 05:39 | 20m | - / -16 | G8GDS | -6 / - | 4 | Partial capture |
| 08-23 05:33 | 20m | - / -19 | VE3EY | -12 / - | 8 | ✓ Closing fragment |
| 08-23 05:28 | 20m | - / - | LZ3CB | +12 / - | 4 | Partial capture |
| 08-23 05:27 | 20m | - / - | VE3EY | -12 / - | 2 | Partial capture |
| 08-16 06:14 | 20m | 0 / - | UA1AOF | - / -10 | 2 | ✓ Closing fragment |
| 08-16 06:11 | 20m | -10 / - | SH0JPO | - / -8 | 4 | ✓ Closing fragment |
| 08-16 06:10 | 20m | - / - | I0CNR | -22 / - | 6 | Partial capture |
| 08-16 06:10 | 20m | +3 / - | DC9JVN | - / -15 | 2 | ✓ Closing fragment |
| 08-16 06:08 | 20m | +4 / - | SP3IPA | - / -12 | 2 | ✓ Closing fragment |
| 08-16 06:07 | 20m | - / - | F4BHK | -9 / - | 6 | Partial capture |
| 08-16 06:07 | 20m | +3 / - | UA6HGM | - / -9 | 2 | ✓ Closing fragment |
| 08-16 06:05 | 20m | -1 / - | IZ8XJJ | - / -15 | 3 | Partial capture |
| 08-16 06:03 | 20m | - / -21 | PD3LKN | -9 / - | 3 | ✓ Closing fragment |
| 08-16 06:02 | 20m | - / - | DL2DT | -19 / - | 3 | Partial capture |
| 08-16 05:58 | 20m | -4 / - | YO6BLU | - / +3 | 2 | ✓ Closing fragment |
| 08-16 05:56 | 20m | - / - | IK3ACI | -13 / - | 3 | Partial capture |
| 08-16 05:49 | 20m | - / - | PD3LKN | -6 / - | 2 | Partial capture |
| 08-14 06:41 | 20m | +4 / - | G0ANS | -2 / +4 | 4 | ✓ Full exchange observed |
| 08-14 06:40 | 20m | 0 / - | YO8DHD | - / -7 | 2 | ✓ Closing fragment |
| 08-14 06:39 | 20m | - / - | IW1QBR | -13 / - | 3 | Partial capture |
| 08-14 06:39 | 20m | +1 / - | SP2IQW | - / -17 | 2 | ✓ Closing fragment |
| 08-14 06:38 | 20m | +2 / - | HB9Q | - / -13 | 2 | ✓ Closing fragment |
| 08-14 06:36 | 20m | +2 / - | SV0TOH | - / - | 3 | ✓ Closing fragment |
| 08-14 06:31 | 20m | +2 / -7 | TA3NK | -11 / -10 | 3 | ✓ Full exchange observed |
| 08-14 06:30 | 20m | -1 / -18 | IZ5ILK | -4 / -19 | 22 | Partial capture |
| 08-14 06:30 | 20m | +8 / - | UR3QRP | - / -14 | 3 | Partial capture |
| 08-14 06:29 | 20m | -2 / -17 | F6CAM | -15 / -3 | 8 | ✓ Full exchange observed |
| 08-14 06:29 | 20m | -2 / - | PD3LKN | - / -14 | 2 | Partial capture |
| 08-14 06:25 | 20m | +3 / - | OZ6G | - / -18 | 5 | ✓ Closing fragment |
| 08-14 06:23 | 20m | +4 / -16 | R6LQU | -6 / -6 | 5 | ✓ Full exchange observed |
| 08-14 06:22 | 20m | +3 / - | YO7BPC | - / -1 | 3 | ✓ Closing fragment |
| 08-11 04:46 | 20m | -2 / - | EX8QD | - / -13 | 2 | ✓ Closing fragment |
| 08-11 04:45 | 20m | - / - | DL2JB | +1 / - | 18 | Partial capture |
| 08-11 04:42 | 20m | -8 / - | 4Z1RZ | - / -8 | 4 | ✓ Closing fragment |
| 08-11 04:41 | 20m | -3 / - | RA0ZIH | - / -14 | 2 | ✓ Closing fragment |
| 08-11 04:38 | 20m | +3 / -14 | K9OM | -8 / -8 | 5 | ✓ Full exchange observed |
| 08-11 04:36 | 20m | +6 / -10 | RV6F | -19 / -2 | 4 | ✓ Full exchange observed |
| 08-11 04:32 | 20m | -1 / -9 | DK1UJ | -13 / -11 | 4 | ✓ Full exchange observed |
| 08-11 04:31 | 20m | +2 / - | N7UJJ | - / -12 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 055315 -8 2823 T77BL VK6WX OF85 055315 -9 875 T77BL G0ODP IO80 055345 -8 416 T77BL RY3F -15 055345 -14 875 T77BL G0ODP IO80 055415 -11 416 T77BL RY3F RR73 055415 -11 874 T77BL G0ODP IO80 (x6) 060045 -4 413 T77BL RV3F R-10 060045 -9 874 T77BL G0ODP R-21 (x3)
UTC dB Audio Message 043145 -3 1578 T77BL LZ1VVD KN12
UTC dB Audio Message 111200 -22 1901 T77BL R3IX KO76 111200 -3 377 T77BL DN9ZZ JO32 111200 -16 1568 T77BL DN9TB JO41 111230 -1 377 T77BL DN9ZZ R+12 111230 -15 1568 T77BL DN9TB JO41 111245 -2 374 DN9ZZ T77BL RR73 111300 -4 377 T77BL DN9ZZ 73 111300 -19 1567 T77BL DN9TB JO41 (x4) 121200 -17 1232 T77BL TA5AZ KM67 (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