YO8RFS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YO8RFS, decoded by SO8OO in southeastern Poland. 87 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-09.
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 87 FT8 messages attributed to YO8RFS as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (82%), followed by 40 m (18%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-08-09 18:22 UTC
Observed FT8 message patterns
- Attributed sample
- 87 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -20 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 44.
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 YO8RFS in decoded directed-looking exchanges:
Most frequent locator attributed to YO8RFS
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
- KN37 · 29 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 468 km (approx.)
- Last such locator decoded
- 2026-08-09 18:22 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 | YO8RFS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-20 10:17 | 10m | - / - | IZ2CPP | -22 / - | 2 | ✓ Closing fragment |
| 08-14 18:02 | 20m | - / - | EA5HM | -12 / - | 3 | Partial capture |
| 08-14 16:54 | 20m | - / - | EX8ABQ | -16 / - | 2 | ✓ Closing fragment |
| 08-13 18:37 | 20m | - / -14 | PA7RW | -20 / - | 3 | Partial capture |
| 08-12 17:27 | 10m | - / -25 | PH2M | -13 / - | 2 | ✓ Closing fragment |
| 08-09 18:21 | 40m | - / -5 | R3ZBY | -12 / - | 2 | Partial capture |
| 08-09 18:20 | 40m | -18 / - | YO9ADN | - / -17 | 3 | ✓ Closing fragment |
| 08-09 18:18 | 40m | -15 / - | SQ8V | - / -19 | 3 | ✓ Closing fragment |
| 08-09 18:17 | 40m | -19 / - | PD4HC | - / -19 | 2 | Partial capture |
| 08-09 18:14 | 40m | -10 / - | R2BIU | - / -18 | 2 | Partial capture |
| 08-09 18:14 | 40m | -16 / - | R3KMI | - / -22 | 2 | ✓ Closing fragment |
| 08-09 18:14 | 40m | - / - | YO7ARY | -22 / - | 2 | Partial capture |
| 08-09 18:10 | 40m | - / - | RA6ZD | -18 / - | 2 | Partial capture |
| 08-09 17:51 | 20m | -10 / - | PD4HC | - / -10 | 2 | ✓ Closing fragment |
| 08-09 17:49 | 20m | -12 / - | OX3LX | - / -16 | 2 | ✓ Closing fragment |
| 08-09 17:46 | 20m | +1 / - | C91RU | - / -21 | 3 | Partial capture |
| 08-09 17:41 | 20m | +3 / - | R1AE | - / -16 | 3 | ✓ Closing fragment |
| 08-09 17:38 | 20m | +4 / - | UT4QM | -18 / -2 | 4 | ✓ Closing observed |
| 08-09 17:37 | 20m | 0 / - | RJ3DC | - / -4 | 2 | ✓ Closing fragment |
| 08-09 17:34 | 20m | 0 / - | HA3GX | - / -13 | 3 | ✓ Closing fragment |
| 08-09 17:33 | 20m | -2 / - | SP6AMI | - / -1 | 2 | ✓ Closing fragment |
| 08-08 08:38 | 20m | - / -6 | PD1ADA | -20 / - | 2 | Partial capture |
| 08-08 08:31 | 20m | - / -7 | UA9SHH | -19 / - | 2 | ✓ Closing fragment |
| 08-08 08:26 | 20m | - / -1 | F1PBZ | -4 / - | 3 | ✓ Closing fragment |
| 08-08 08:26 | 20m | -15 / +4 | R5AV | -2 / +3 | 3 | ✓ Full exchange observed |
| 08-07 19:48 | 20m | - / -13 | M0URL | -4 / - | 4 | ✓ Closing fragment |
| 08-07 19:36 | 20m | - / - | CT1BFP | -12 / - | 2 | Partial capture |
| 07-30 18:52 | 20m | - / - | M0ANQ | -14 / - | 2 | ✓ Closing fragment |
| 07-29 19:06 | 20m | - / +3 | DH1KU | -8 / - | 2 | Partial capture |
| 07-29 19:05 | 20m | - / -11 | DF2SL | -17 / - | 3 | ✓ Closing fragment |
| 07-29 18:57 | 20m | - / -3 | PD9SD | -17 / - | 3 | Partial capture |
| 07-29 18:44 | 20m | -11 / +8 | F5AYL | +4 / -5 | 4 | ✓ Full exchange observed |
| 07-29 18:42 | 20m | -6 / - | IW5ALZ | - / -14 | 2 | ✓ Closing fragment |
| 07-29 18:41 | 20m | 0 / - | YC1SNI | - / -18 | 2 | ✓ Closing fragment |
| 07-29 18:39 | 20m | +1 / - | UX2QX | - / -17 | 2 | ✓ Closing fragment |
| 07-29 18:38 | 20m | +2 / - | 5P2K | - / -11 | 2 | ✓ Closing fragment |
| 07-29 18:37 | 20m | 0 / - | UA0LQE | - / -12 | 2 | Partial capture |
| 07-29 18:36 | 20m | - / - | UX2QX | -12 / - | 2 | Partial capture |
| 07-29 18:35 | 20m | +1 / - | BH5HFK | - / -12 | 3 | ✓ Closing fragment |
| 07-29 18:34 | 20m | -7 / - | BG5CZW | - / -17 | 2 | ✓ Closing fragment |
| 07-25 15:42 | 10m | - / - | R6DWD | -8 / - | 2 | ✓ Closing fragment |
| 07-24 16:57 | 10m | - / - | DN9AD | -12 / - | 4 | Partial capture |
| 07-24 14:21 | 10m | - / -8 | PD0JLA | -6 / - | 2 | Partial capture |
| 07-24 14:18 | 10m | - / +4 | DN9ZZ | -12 / - | 2 | Partial capture |
| 07-24 14:17 | 10m | - / -7 | TK5K | -7 / - | 2 | ✓ Closing fragment |
| 07-24 14:13 | 10m | - / -19 | TK5K | -3 / - | 3 | Partial capture |
| 07-13 20:32 | 20m | - / -6 | YT3VOL | -22 / - | 2 | Partial capture |
| 07-09 20:39 | 20m | - / - | G4CFS | +4 / - | 2 | ✓ Closing fragment |
| 07-05 09:52 | 10m | - / - | PA2KV | -8 / - | 2 | Partial capture |
| 07-05 09:41 | 10m | - / +4 | DF5AU | +3 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 183745 -15 1865 YO8RFS PA7RW JO22 (x3) 183945 -23 1308 YO8RFS ON1JP -02 190015 -22 1709 YO8RFS PH1UW R-12 190045 -10 2450 YO8RFS DB8DH JO42 190815 -21 1163 YO8RFS DB2LP JO43 165415 -14 1406 YO8RFS EX8ABQ MN72 (x2) 180230 -10 1862 YO8RFS EA5HM IM99 (x3) 181400 -20 1258 YO8RFS MM8WNA IO87 040645 -2 1558 YO8RFS SV9MBH KM25 040745 -12 853 YO8RFS UA4SBZ LO36
UTC dB Audio Message 165700 -12 2369 YO8RFS DN9AD JO52 (x4) 154200 -9 2391 YO8RFS R6DWD +14 (x2) 154600 -16 1203 YO8RFS M0JFG 73 162915 -10 490 YO8RFS IK4LZH 73 152900 -20 1260 YO8RFS PD1HBL JO21 145400 -22 1576 YO8RFS LZ1JZ 73 172700 -13 815 YO8RFS PH2M R-25 (x2) 082315 -7 491 YO8RFS IK4LZH JN54 101745 -24 1662 YO8RFS IZ2CPP JN45 (x2)
UTC dB Audio Message 181515 -9 1526 R2BIU YO8RFS -23 181545 -20 1526 R3KMI YO8RFS RR73 181715 -21 1525 PD4HC YO8RFS -19 (x2) 181815 -15 1525 SQ8V YO8RFS -19 (x3) 181945 -20 1526 CQ YO8RFS KN37 a1 182015 -15 1526 YO9ADN YO8RFS -17 (x3) 182130 -11 2018 YO8RFS R3ZBY -05 182145 -15 1526 CQ YO8RFS KN37 182200 -12 2018 YO8RFS R3ZBY -11 182215 -19 1526 CQ YO8RFS KN37
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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