RU1Z — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RU1Z, decoded by SO8OO in southeastern Poland. 16 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-20 and 2026-09-21.
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 16 FT8 messages attributed to RU1Z as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (75%), followed by 80 m (25%). In this small sample, the estimated median decoder S/N was -7 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-21 15:58 UTC
Observed FT8 message patterns
- Attributed sample
- 16 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -7 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 16.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with RU1Z in decoded directed-looking exchanges:
Most frequent locator attributed to RU1Z
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
- KP69 · 2 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,256 km (approx.)
- Last such locator decoded
- 2026-09-21 00:40 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 | RU1Z S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-21 15:58 | 80m | -8 / -10 | RX6LG | +4 / -10 | 3 | ✓ Full exchange observed |
| 09-21 15:57 | 80m | -4 / - | UN7CFG | - / -18 | 2 | ✓ Closing fragment |
| 09-21 00:42 | 40m | -6 / - | R9OAK | - / -17 | 2 | ✓ Closing fragment |
| 09-21 00:42 | 40m | - / - | RZ4FWA | -10 / - | 2 | Partial capture |
| 09-21 00:41 | 40m | -8 / -15 | EA5JKT | -10 / -20 | 6 | ✓ Full exchange observed |
| 09-21 00:40 | 40m | -6 / - | R9OON | - / -26 | 3 | ✓ Closing fragment |
| 09-20 23:18 | 40m | -7 / - | RD7O | - / -15 | 2 | ✓ Closing fragment |
| 09-20 23:14 | 40m | -4 / - | TN8GD | - / -23 | 3 | ✓ Closing fragment |
| 09-20 23:09 | 80m | -2 / -13 | EC3A | -10 / - | 5 | ✓ Closing observed |
| 09-20 23:09 | 80m | - / -9 | 4O7CC | +12 / - | 2 | ✓ Closing fragment |
| 09-20 23:07 | 160m | - / -5 | RM5F | -6 / - | 2 | ✓ Closing fragment |
| 09-20 23:04 | 160m | - / -12 | RI1FJZ | -7 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 230900 +9 338 RU1Z 4O7CC R-09 230930 -7 1663 RU1Z EC3A -13 230930 +14 338 RU1Z 4O7CC RR73 231000 -12 1663 RU1Z EC3A -13 (x3) 231115 -2 395 EC3A RU1Z 73 231200 -24 1262 RU1Z RI1FJZ R+20 231230 -24 1262 RU1Z RR73; SV5ADM <...> -08 155730 -6 363 UN7CFG RU1Z -18 (x2) 155815 +6 2681 RU1Z RX6LG -10 155830 -8 363 RX6LG RU1Z R-10 155845 +2 2681 RU1Z RX6LG RR73 155845 +8 363 RU1Z RC1TF +07
UTC dB Audio Message 231815 -7 325 RD7O RU1Z -15 (x2) 004015 -7 476 R9OON RU1Z KP69 (x3) 004130 -9 1216 RU1Z EA5JKT IM99 004200 -10 2028 RU1Z RZ4FWA LO23 004200 -10 1216 RU1Z EA5JKT IM99 004215 -6 476 R9OAK RU1Z -17 004230 -9 2028 RU1Z RZ4FWA LO23 004230 -13 1216 RU1Z EA5JKT IM99 004245 -5 476 R9OAK RU1Z RR73 004315 -8 476 EA5JKT RU1Z -20 004330 -10 1216 RU1Z EA5JKT R-15 004345 -8 476 EA5JKT RU1Z RR73
UTC dB Audio Message 230400 -6 787 RU1Z RI1FJZ -12 (x2) 230500 -11 1508 RU1Z RM5F KO85 (x3)
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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