R3UDU — 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 R3UDU, decoded by SO8OO in southeastern Poland. 742 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 50 UTC dates in the available aggregate history. Observed between 2026-08-16 and 2026-10-22.
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 742 FT8 messages attributed to R3UDU as the transmitting token by decoded message structure across 50 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (75%), followed by 20 m (25%). Most decodes (76%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13.8 dB.
Overview
Bands
Last attributed message: 2026-10-22 17:58 UTC
Observed FT8 message patterns
- Attributed sample
- 742 messages
- Active dates
- 50 UTC dates
- Estimated median S/N
- -13.8 dB
- Estimated 10th-90th percentile
- -20.7 to -5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 277, moderate (-15 to -9 dB) 275, strong (≥ -8 dB) 190.
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 R3UDU 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 R3UDU
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
- LO07 · 444 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,510 km (approx.)
- Last such locator decoded
- 2026-10-22 17:57 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 | R3UDU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 17:57 | 40m | -6 / -6 | M1DBW | -1 / -8 | 5 | ✓ Full exchange observed |
| 10-22 17:45 | 40m | -4 / - | M1DBW | - / - | 2 | Partial capture |
| 10-22 17:44 | 40m | -12 / - | 7Z1AV | - / -3 | 2 | ✓ Closing fragment |
| 10-22 17:40 | 40m | -18 / -3 | PA/DK4DAX | -7 / - | 2 | Partial capture |
| 10-22 17:06 | 40m | - / -16 | OE2CAL | -2 / - | 3 | ✓ Closing fragment |
| 10-22 16:44 | 40m | -19 / -7 | R1BRS | 0 / - | 2 | ✓ Closing observed |
| 10-22 16:13 | 40m | - / -8 | DK2AM | -9 / - | 3 | ✓ Closing fragment |
| 10-22 16:05 | 40m | -15 / - | UN2NC | - / -12 | 3 | Partial capture |
| 10-22 15:54 | 40m | - / -15 | DM2HK | +1 / - | 14 | Partial capture |
| 10-22 15:53 | 40m | - / -10 | RV6HE | -12 / - | 2 | ✓ Closing fragment |
| 10-22 15:50 | 40m | -22 / -14 | M0OXO | -6 / -8 | 5 | ✓ Full exchange observed |
| 10-22 15:36 | 40m | - / +10 | PD7JLP | -4 / - | 2 | ✓ Closing fragment |
| 10-22 15:34 | 40m | -4 / - | OZ6MM | - / -8 | 3 | ✓ Closing fragment |
| 10-22 15:32 | 40m | -18 / - | OH3BYZ | - / +10 | 2 | Partial capture |
| 10-22 15:31 | 40m | - / - | 9A4ZM | -2 / - | 2 | Partial capture |
| 10-22 15:30 | 40m | - / -3 | R6LFO | -14 / - | 2 | Partial capture |
| 10-22 15:29 | 40m | -6 / - | R4ADJ | - / +9 | 3 | ✓ Closing fragment |
| 10-22 15:27 | 40m | -6 / - | RA6YZ | -9 / 0 | 5 | ✓ Closing observed |
| 10-21 16:53 | 40m | -16 / -8 | LZ2WP | +8 / -11 | 5 | ✓ Full exchange observed |
| 10-21 13:05 | 40m | - / -8 | OM2IB | +2 / - | 4 | ✓ Closing fragment |
| 10-20 16:48 | 40m | -16 / -10 | UC6B | -12 / -10 | 5 | ✓ Full exchange observed |
| 10-19 14:06 | 40m | -17 / -7 | R3RAA | -12 / - | 2 | ✓ Closing observed |
| 10-17 18:21 | 40m | - / -19 | GI3PXT | -6 / - | 3 | Partial capture |
| 10-17 18:09 | 40m | - / -14 | RT7B | -6 / - | 2 | ✓ Closing fragment |
| 10-17 17:23 | 40m | -12 / - | F6CCS | - / - | 2 | Partial capture |
| 10-17 17:04 | 40m | -12 / - | R2EN | - / - | 2 | Partial capture |
| 10-16 16:52 | 40m | -22 / +3 | UN0GY | -11 / -6 | 2 | Partial capture |
| 10-14 14:22 | 40m | -18 / - | UB9UZA | - / -16 | 4 | Partial capture |
| 10-14 14:17 | 40m | - / +5 | R9LY | 0 / - | 2 | ✓ Closing fragment |
| 10-14 14:15 | 40m | - / -1 | YO3JW | -6 / - | 2 | ✓ Closing fragment |
| 10-14 14:11 | 40m | -24 / -1 | YO3JW | -5 / - | 4 | Partial capture |
| 10-13 16:44 | 40m | -17 / - | BG0FQU | - / - | 2 | Partial capture |
| 10-13 16:34 | 40m | -15 / +6 | DL9FA | -8 / -13 | 4 | ✓ Full exchange observed |
| 10-13 16:28 | 40m | -6 / -9 | YO9IAB | +13 / -9 | 13 | ✓ Full exchange observed |
| 10-13 16:07 | 40m | - / +1 | UA3SAO | -9 / - | 2 | ✓ Closing fragment |
| 10-13 16:02 | 40m | -6 / +5 | R3PA | 0 / -3 | 5 | ✓ Full exchange observed |
| 10-13 16:00 | 40m | -7 / -3 | DL8OH | +19 / - | 6 | ✓ Full exchange observed |
| 10-13 15:55 | 40m | -15 / - | R6AO | -15 / -1 | 4 | Partial capture |
| 10-13 15:52 | 40m | -9 / +4 | R4HNT | -8 / - | 3 | ✓ Closing observed |
| 10-13 15:48 | 40m | -10 / -8 | HA5VZ | +2 / -11 | 5 | ✓ Full exchange observed |
| 10-13 15:45 | 40m | -9 / -4 | YO9XC | 0 / - | 4 | Partial capture |
| 10-13 15:37 | 40m | - / +4 | R4YF | -16 / - | 2 | ✓ Closing fragment |
| 10-13 15:35 | 40m | - / - | HB9ELE | +11 / - | 3 | Partial capture |
| 10-13 15:34 | 40m | -12 / - | UB3BHW | - / - | 3 | ✓ Closing fragment |
| 10-13 15:32 | 40m | - / -16 | RZ3DAB | -9 / - | 2 | Partial capture |
| 10-13 15:19 | 40m | -6 / - | UA4CGR | - / -6 | 2 | Partial capture |
| 10-12 18:32 | 40m | -20 / -18 | LZ1ZF | +2 / - | 4 | Partial capture |
| 10-12 18:30 | 40m | - / -11 | LB6OJ | -10 / - | 2 | ✓ Closing fragment |
| 10-12 18:04 | 40m | -16 / - | YO4NF | +4 / -6 | 5 | ✓ Closing observed |
| 10-12 17:54 | 40m | -9 / - | RK6ADN | - / -10 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 170745 -2 1258 R3UDU OE2CAL -16 (x2) 173800 -6 748 R3UDU 2E0FHM -02 174000 -18 992 PA/DK4DAX R3UDU LO07 174015 -7 992 R3UDU PA/DK4DAX -03 174200 -23 1538 7Z1AV R3UDU LO07 (x3) 174530 -2 2779 M1DBW R3UDU LO07 (x3) 175715 +0 2781 R3UDU M1DBW -06 175730 -5 2779 M1DBW R3UDU R-08 175745 -2 2781 R3UDU M1DBW RR73 175800 -5 2778 M1DBW R3UDU 73
UTC dB Audio Message 175400 -6 1107 R3UDU RA3UEV -21 (x2)
UTC dB Audio Message 155730 -15 1807 R3UDU TA3STR KM39 155745 -4 1807 TA3STR R3UDU -17 (x2) 155830 -16 1805 R3UDU TA3STR -16 155845 -11 1806 TA3STR R3UDU R-14 155900 -18 1807 R3UDU TA3STR RR73 155915 -7 1807 CQ R3UDU LO07 155930 -3 2215 R3UDU IQ4JO JN63 155945 -10 1806 IQ4JO R3UDU -14 160000 +7 2215 R3UDU IQ4JO R-09 160015 -6 1806 CQ R3UDU LO07 (x2) 160100 +4 2215 R3UDU IQ4JO R-09 160115 -3 1806 CQ R3UDU LO07 (x2)
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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