RU9YF — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving RU9YF, decoded by SO8OO in southeastern Poland. 25 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-10-02.
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 25 FT8 messages attributed to RU9YF as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 20 m (48%). Most decodes (56%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (88%); the estimated median was -20 dB.
Overview
Bands
Last attributed message: 2026-10-02 00:33 UTC
Observed FT8 message patterns
- Attributed sample
- 25 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -20 dB
- Estimated 10th-90th percentile
- -24 to -15 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 0.
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 RU9YF 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 RU9YF
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
- NO13 · 9 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 4,104 km (approx.)
- Last such locator decoded
- 2026-10-02 00:33 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 | RU9YF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-19 13:57 | 40m | - / - | 9A4ZM | -4 / - | 2 | Partial capture |
| 10-19 12:30 | 40m | - / - | UW5ESX | -7 / - | 7 | Partial capture |
| 10-06 01:53 | 40m | - / -19 | RN6HK | -16 / - | 3 | ✓ Closing fragment |
| 10-06 01:46 | 40m | - / - | RN6HK | -8 / - | 3 | Partial capture |
| 10-03 20:35 | 40m | - / - | 9A3K | +2 / - | 3 | Partial capture |
| 10-03 20:35 | 40m | - / - | PA3FR | -10 / - | 4 | Partial capture |
| 10-03 20:26 | 40m | - / - | F4BYA | +8 / - | 4 | Partial capture |
| 10-02 00:11 | 40m | -22 / - | RZ4FWA | -17 / -9 | 3 | Partial capture |
| 10-02 00:08 | 40m | -16 / -18 | I2XYI | -2 / - | 6 | ✓ Closing observed |
| 10-02 00:01 | 40m | - / - | I2XYI | -3 / - | 8 | Partial capture |
| 10-01 15:33 | 40m | - / -8 | RU4SS | -14 / - | 2 | ✓ Closing fragment |
| 10-01 15:21 | 40m | - / - | UB4FGK | -10 / - | 2 | Partial capture |
| 10-01 15:20 | 40m | - / -15 | SP8AJC | +2 / - | 2 | Partial capture |
| 08-29 16:30 | 40m | - / -9 | RW3ZC | 0 / - | 2 | ✓ Closing fragment |
| 08-29 16:20 | 40m | - / -5 | R3KLE | -5 / - | 2 | ✓ Closing fragment |
| 08-29 15:56 | 40m | - / -4 | RG3M | -4 / - | 2 | ✓ Closing fragment |
| 08-29 14:19 | 20m | -22 / - | <...> | - / -16 | 2 | Partial capture |
| 08-29 14:10 | 20m | -20 / - | <...> | - / -16 | 2 | Partial capture |
| 08-29 13:56 | 20m | -24 / - | <...> | - / -15 | 2 | Partial capture |
| 08-29 13:49 | 20m | -24 / - | BH9BGW | - / -7 | 3 | Partial capture |
| 08-29 13:29 | 20m | - / -16 | RU3NCW | -6 / - | 2 | Partial capture |
| 08-28 20:09 | 40m | - / -18 | GJ0KYZ | -2 / - | 3 | Partial capture |
| 08-28 20:09 | 40m | - / -15 | R7ZY | +9 / - | 3 | ✓ Closing fragment |
| 08-28 20:04 | 40m | - / -12 | R3YBG | -1 / - | 2 | ✓ Closing fragment |
| 08-28 19:38 | 40m | - / - | YT1DDL | -2 / - | 3 | Partial capture |
| 08-28 19:13 | 40m | - / -13 | OK7PJ | +6 / - | 9 | Partial capture |
| 08-27 17:30 | 20m | - / -16 | R6LQU | +8 / - | 3 | ✓ Closing fragment |
| 08-27 16:59 | 20m | - / - | RZ6ALZ | +9 / - | 2 | Partial capture |
| 08-27 16:48 | 20m | - / - | F4BYA | +1 / - | 3 | Partial capture |
| 08-27 16:48 | 20m | - / - | OE9GWV | +9 / - | 5 | Partial capture |
| 08-27 16:48 | 20m | - / -18 | UA6AFE | +8 / - | 2 | ✓ Closing fragment |
| 08-27 10:15 | 20m | - / - | RW9CC | -22 / - | 3 | ✓ Closing fragment |
| 08-27 09:03 | 20m | - / - | R3DNC | +4 / - | 2 | Partial capture |
| 08-26 20:34 | 40m | - / - | PA3FR | +1 / - | 3 | Partial capture |
| 08-26 20:02 | 40m | - / - | R7ZY | +4 / - | 5 | Partial capture |
| 08-26 19:40 | 40m | -21 / - | R3DNC | - / -6 | 2 | Partial capture |
| 08-26 19:36 | 40m | - / -15 | UA3SNB | -17 / - | 3 | Partial capture |
| 08-26 13:20 | 20m | - / -8 | RW3DBX | -12 / - | 3 | ✓ Closing fragment |
| 08-26 12:59 | 20m | - / - | RA6YCL | -7 / - | 7 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 014730 -7 2537 RU9YF RN6HK LN14 (x4) 191815 -17 2027 RU9YF RZ4FWA LO23 003000 -17 2369 RU9YF RO6G -14 123045 -6 2713 RU9YF UW5ESX KN67 (x7) 135745 -6 2265 RU9YF 9A4ZM JN86 (x2)
UTC dB Audio Message 173030 +6 1583 RU9YF R6LQU KN97 (x3) 132900 -6 2853 RU9YF RU3NCW R-16 (x2) 134945 -23 1594 BH9BGW RU9YF -07 (x3) 135645 -23 1594 <...> RU9YF -15 (x6) 082100 +3 989 RU9YF RM6OS RR73
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee