RU4H — 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 RU4H, decoded by SO8OO in southeastern Poland. 24 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-08-21.
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 24 FT8 messages attributed to RU4H as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (75%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 24 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -22 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 2.
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 RU4H in decoded directed-looking exchanges:
Most frequent locator attributed to RU4H
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
- LO53 · 17 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,036 km (approx.)
- Last such locator decoded
- 2026-08-21 10:11 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 | RU4H S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-09 17:17 | 40m | - / -8 | RN3YN | -5 / - | 6 | Partial capture |
| 10-09 17:17 | 40m | - / -12 | EW4DX | +8 / - | 2 | Partial capture |
| 10-09 17:17 | 40m | - / -16 | UB6OAJ | -5 / - | 2 | Partial capture |
| 08-21 10:08 | 20m | -14 / - | OJ0YL | - / - | 6 | Partial capture |
| 08-11 17:28 | 10m | - / -2 | EA8UP | -8 / - | 2 | ✓ Closing fragment |
| 08-10 13:26 | 20m | -20 / - | <...> | - / - | 2 | Partial capture |
| 07-28 15:47 | 20m | -20 / - | TF4M | - / -7 | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 171700 -5 455 RU4H UB6OAJ -16 171700 +4 895 RU4H EW4DX KO23 171730 -12 682 RU4H RN3YN KO73 171730 +11 895 RU4H EW4DX R-12 171830 -5 576 RU4H UB6OAJ -10 171830 -7 682 RU4H RN3YN KO73 (x5) 172200 -12 2337 RU4H R1QF -11
UTC dB Audio Message 154845 -19 2203 TF4M RU4H LO53 (x2) 132615 -18 1678 <...> RU4H LO53 (x2) 165515 -17 1515 CQ RU4H LO53 (x3) 165700 -16 1516 RU4H US1EA KN78 165715 -21 1516 RD0L RU4H RR73 100845 -16 1907 OJ0YL RU4H LO53 (x6)
UTC dB Audio Message 172830 -8 1212 RU4H EA8UP -02 (x2) 101800 -13 1029 RU4H <...> -12
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.
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