YO2BTW — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YO2BTW, decoded by SO8OO in southeastern Poland. 595 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-23 and 2026-09-19.
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 595 FT8 messages attributed to YO2BTW as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (85%), followed by 40 m (13%) and 20 m (2%). Most decodes (100%) 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 (90%); the estimated median was +10 dB.
Overview
Bands
Last attributed message: 2026-09-19 22:21 UTC
Observed FT8 message patterns
- Attributed sample
- 595 messages
- Active dates
- 13 UTC dates
- Estimated median S/N
- +10 dB
- Estimated 10th-90th percentile
- -9 to +18 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 533.
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 YO2BTW 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 YO2BTW
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
- KN15 · 317 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 502 km (approx.)
- Last such locator decoded
- 2026-09-19 22:21 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 | YO2BTW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 22:20 | 80m | +15 / - | MW7GQB | - / - | 4 | Partial capture |
| 09-19 22:18 | 80m | +11 / - | UA9D | - / - | 2 | Partial capture |
| 09-19 22:16 | 80m | +11 / - | EW8AAC | - / - | 4 | Partial capture |
| 09-19 22:14 | 80m | +8 / -15 | IZ3ZOF | -8 / -23 | 5 | ✓ Full exchange observed |
| 09-19 22:11 | 80m | +13 / - | R4FDK | -11 / -8 | 10 | Partial capture |
| 09-19 22:10 | 80m | +10 / - | EH3ST | - / -7 | 2 | ✓ Closing fragment |
| 09-19 22:04 | 80m | +22 / -11 | R2DIH | -14 / -12 | 4 | ✓ Full exchange observed |
| 09-19 22:02 | 80m | +18 / -6 | DO4HHK | -20 / -24 | 5 | ✓ Full exchange observed |
| 09-19 22:00 | 80m | +16 / - | RY3F | -5 / -7 | 3 | ✓ Closing observed |
| 09-19 21:58 | 80m | +20 / -14 | UA9SY | -23 / -11 | 6 | ✓ Full exchange observed |
| 09-19 21:57 | 80m | +10 / -15 | DD8BA | -1 / -3 | 6 | ✓ Full exchange observed |
| 09-19 21:56 | 80m | +18 / +9 | DL2AOM | -12 / -9 | 3 | ✓ Full exchange observed |
| 09-19 21:49 | 80m | +14 / -9 | LB4PJ | -9 / -19 | 8 | ✓ Full exchange observed |
| 09-19 21:45 | 80m | +17 / - | DR2A | - / -13 | 6 | ✓ Closing fragment |
| 09-19 21:42 | 80m | +13 / +1 | IW6NEM | +6 / -3 | 5 | ✓ Full exchange observed |
| 09-19 21:39 | 80m | +14 / - | II8IHBC | - / -3 | 2 | Partial capture |
| 09-19 21:38 | 80m | +14 / - | EW8AAC | - / - | 3 | Partial capture |
| 09-19 21:36 | 80m | +8 / -3 | SN40KZE | +5 / -7 | 3 | Partial capture |
| 09-19 21:34 | 80m | +8 / +4 | 9A60CBM | +5 / 0 | 3 | Partial capture |
| 09-19 21:25 | 80m | +13 / - | RI1FJZ | - / - | 7 | Partial capture |
| 09-02 17:57 | 80m | -1 / - | RI1FJL | - / - | 3 | Partial capture |
| 09-02 17:55 | 80m | +9 / - | OE3FVU | - / -12 | 3 | Partial capture |
| 09-02 17:52 | 80m | +6 / -10 | HF5A | +12 / -8 | 5 | ✓ Full exchange observed |
| 09-02 17:52 | 80m | +2 / -17 | UA3ZQN | +7 / -3 | 7 | ✓ Full exchange observed |
| 09-01 22:28 | 80m | +17 / - | GW4HZA | - / - | 3 | Partial capture |
| 09-01 22:22 | 80m | +12 / +4 | DA6LRW | -4 / -12 | 5 | ✓ Full exchange observed |
| 09-01 22:08 | 80m | +10 / -4 | G0DWV | -3 / -9 | 5 | ✓ Full exchange observed |
| 09-01 22:06 | 80m | +15 / 0 | DL4KSD | -3 / -11 | 8 | ✓ Full exchange observed |
| 09-01 22:03 | 80m | +20 / +8 | YO6BGT | +8 / +4 | 4 | ✓ Full exchange observed |
| 09-01 22:02 | 80m | - / +4 | DO9JTR | -7 / - | 2 | Partial capture |
| 09-01 22:01 | 80m | +20 / -4 | IU2VBP | -6 / -8 | 5 | ✓ Full exchange observed |
| 09-01 21:59 | 80m | +19 / -3 | DF2NV | +11 / -1 | 5 | ✓ Full exchange observed |
| 09-01 21:56 | 80m | +18 / - | ZS6WAB | - / -19 | 2 | ✓ Closing fragment |
| 09-01 21:52 | 80m | +16 / -16 | DL9KM | +4 / - | 5 | ✓ Closing observed |
| 09-01 21:51 | 80m | +16 / -16 | OZ1LGJ | -1 / -15 | 5 | ✓ Full exchange observed |
| 09-01 21:49 | 80m | +19 / 0 | F4BYA | -8 / -7 | 5 | ✓ Full exchange observed |
| 09-01 21:45 | 80m | +22 / - | DL6WA | +22 / -2 | 3 | Partial capture |
| 09-01 21:43 | 80m | +17 / +2 | LZ1VVD | 0 / +2 | 4 | ✓ Full exchange observed |
| 09-01 21:38 | 80m | +11 / -2 | F1PBZ | -5 / -8 | 4 | ✓ Full exchange observed |
| 09-01 21:37 | 80m | +20 / -1 | DO2SHJ | -2 / 0 | 4 | ✓ Full exchange observed |
| 09-01 21:34 | 80m | +20 / - | UR3QCB | -4 / -12 | 3 | ✓ Closing observed |
| 09-01 21:34 | 80m | +18 / - | DL1EDR | +14 / -9 | 4 | Partial capture |
| 09-01 21:31 | 80m | +15 / - | ZS6WAB | - / - | 3 | Partial capture |
| 09-01 21:30 | 80m | +19 / -20 | EA1CQ | -10 / -20 | 4 | Partial capture |
| 09-01 21:29 | 80m | +14 / - | YO9BGU | - / -9 | 2 | ✓ Closing fragment |
| 09-01 21:28 | 80m | +17 / - | ZS6WAB | - / - | 2 | Partial capture |
| 09-01 21:27 | 80m | +14 / - | 9A5MP | - / -15 | 2 | ✓ Closing fragment |
| 09-01 21:25 | 80m | +12 / - | RA0SCA | - / - | 2 | Partial capture |
| 08-24 22:12 | 80m | +4 / -14 | EA4HPY | -2 / -1 | 5 | ✓ Full exchange observed |
| 08-24 22:11 | 80m | +4 / -18 | MM0DHQ | -10 / -17 | 4 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 221415 +3 1339 IZ3ZOF YO2BTW KN15 221430 -10 2573 YO2BTW IZ3ZOF -15 221445 +10 1339 IZ3ZOF YO2BTW R-23 221500 -5 2572 YO2BTW IZ3ZOF RR73 221515 +10 1339 IZ3ZOF YO2BTW 73 221615 +8 1339 EW8AAC YO2BTW KN15 (x4) 221845 +11 1339 UA9D YO2BTW KN15 (x2) 222015 +11 1339 MW7GQB YO2BTW KN15 (x4)
UTC dB Audio Message 212345 -5 332 YO2BTW RA3ZDU 73 212400 -6 973 ES5MAH YO2BTW KN15 212545 +7 2784 EW8DG YO2BTW R-12 (x2) 212645 -8 1734 CT1KNL YO2BTW KN15 (x4) 212830 -14 834 YO2BTW IU0TPA JN61 212845 -11 834 IU0TPA YO2BTW -04 212900 -13 834 YO2BTW IU0TPA JN61 212915 -6 833 IU0TPA YO2BTW -07 212930 -13 833 YO2BTW IU0TPA JN61 212945 -7 833 IU0TPA YO2BTW -06 213030 -8 2554 EA8DHH YO2BTW KN15
UTC dB Audio Message 214530 -19 1324 YO2BTW SV7BVM -19 (x4) 214930 +9 1615 YO2BTW OM2WQ JN88 215015 -19 1615 OM2WQ YO2BTW -01
UTC dB Audio Message 172330 -24 1988 VR2KF YO2BTW R-18 172530 -16 1989 YO2BTW R5AV -12 173230 -8 428 YO2BTW T77RN +07 (x2) 174445 -20 1572 EA5ISM YO2BTW 73 180045 -21 1563 YH9GB YO2BTW KN15 180200 -9 2537 JR6AG YO2BTW KN15 (x2) 180445 -10 2516 UN3QA YO2BTW KN15 180715 -16 1778 S21VHF YO2BTW KN15 (x2) 181200 -24 1544 EA8DGI YO2BTW KN15
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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