R3LDK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving R3LDK, decoded by SO8OO in southeastern Poland. 4,979 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 93 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-06.
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 4,979 FT8 messages attributed to R3LDK as the transmitting token by decoded message structure across 93 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (45%), followed by 20 m (26%) and 80 m (17%). Most decodes (76%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (69%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-10-06 17:42 UTC
Observed FT8 message patterns
- Attributed sample
- 4,979 messages
- Active dates
- 93 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -15 to +6.9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 444, moderate (-15 to -9 dB) 1,124, strong (≥ -8 dB) 3,411.
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 R3LDK 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 R3LDK
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
- KO64 · 2,731 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 915 km (approx.)
- Last such locator decoded
- 2026-10-06 17:41 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 | R3LDK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-06 17:40 | 40m | -4 / - | F/DK5UR/P | - / -9 | 5 | Partial capture |
| 10-06 17:35 | 40m | +5 / - | RW6AP | - / - | 7 | Partial capture |
| 10-06 17:29 | 40m | -4 / -24 | U1BD | -14 / -17 | 11 | ✓ Full exchange observed |
| 10-06 17:27 | 40m | -5 / - | R3PBA | - / - | 4 | Partial capture |
| 10-06 17:25 | 40m | 0 / - | RA1QCX | - / +1 | 2 | ✓ Closing fragment |
| 10-06 17:23 | 40m | -2 / +5 | DB2OE | +6 / -7 | 5 | ✓ Full exchange observed |
| 10-06 17:21 | 40m | -4 / - | R4HOH | - / -5 | 3 | ✓ Closing fragment |
| 10-06 17:19 | 40m | +1 / - | R4UBL | - / - | 4 | Partial capture |
| 10-06 17:16 | 40m | -1 / - | R5VCR | - / -15 | 3 | ✓ Closing fragment |
| 10-06 17:14 | 40m | -3 / - | R6AEB | - / -15 | 3 | ✓ Closing fragment |
| 10-06 17:13 | 40m | -2 / -12 | UA3VVA | -12 / +9 | 3 | ✓ Full exchange observed |
| 10-06 17:06 | 40m | -10 / 0 | R5MA | -13 / - | 6 | ✓ Closing observed |
| 10-06 17:03 | 40m | -10 / - | RJ9M | - / -11 | 4 | ✓ Closing fragment |
| 10-06 16:59 | 40m | -6 / - | UB8SII | - / -18 | 2 | Partial capture |
| 10-06 16:55 | 40m | -10 / - | R4CI | - / - | 6 | Partial capture |
| 10-05 19:21 | 160m | -12 / -10 | G0OIL | -15 / -14 | 5 | ✓ Full exchange observed |
| 10-05 19:18 | 160m | -6 / +7 | R1NW | -9 / -10 | 5 | ✓ Full exchange observed |
| 10-05 19:15 | 160m | -6 / -2 | SQ3RX | -2 / -10 | 5 | ✓ Full exchange observed |
| 10-05 19:10 | 160m | -9 / - | LZ2IP | - / - | 5 | Partial capture |
| 10-05 19:07 | 80m | +12 / - | R2BPS | - / - | 2 | Partial capture |
| 10-05 19:04 | 80m | -4 / - | R2BPS | - / -14 | 2 | Partial capture |
| 10-05 18:59 | 80m | 0 / -14 | DC5IMM | +5 / -5 | 8 | ✓ Full exchange observed |
| 10-05 18:55 | 80m | +5 / -2 | OZ1A | -4 / -7 | 5 | ✓ Full exchange observed |
| 10-05 18:52 | 80m | +2 / - | RA4APF | - / -10 | 4 | Partial capture |
| 10-05 18:50 | 80m | +4 / - | R3KLE | +1 / +4 | 5 | ✓ Full exchange observed |
| 10-05 18:47 | 80m | -3 / - | DC5IMM | - / - | 3 | Partial capture |
| 10-05 18:43 | 80m | +4 / - | UB3LBU | -1 / - | 4 | ✓ Closing observed |
| 10-05 18:40 | 80m | -5 / - | R4RJ | - / -9 | 5 | ✓ Closing fragment |
| 10-05 18:36 | 80m | -6 / -3 | SQ5ANT | +9 / - | 7 | ✓ Full exchange observed |
| 10-05 18:31 | 80m | -7 / - | R3KBY | - / +7 | 4 | ✓ Closing fragment |
| 10-05 18:28 | 80m | +6 / - | RN3PB | - / - | 4 | Partial capture |
| 10-05 18:27 | 80m | +8 / - | RA3ZOM | - / +4 | 3 | ✓ Closing fragment |
| 10-05 18:22 | 40m | -2 / - | SQ8GMW | - / - | 4 | Partial capture |
| 10-05 18:10 | 40m | -6 / -7 | IN3JRZ | +4 / - | 3 | ✓ Closing observed |
| 10-05 18:03 | 40m | -15 / - | SP8PLC | - / - | 3 | Partial capture |
| 10-05 18:02 | 40m | -2 / - | HF50HSP | - / -2 | 2 | Partial capture |
| 10-05 17:11 | 40m | -3 / - | F4HSB | -12 / -14 | 8 | ✓ Full exchange observed |
| 10-05 17:10 | 40m | -5 / +2 | DL6MRS | +11 / 0 | 4 | ✓ Full exchange observed |
| 10-05 17:03 | 40m | -1 / - | SP2JAP | - / -6 | 2 | ✓ Closing fragment |
| 10-05 16:57 | 40m | -3 / -18 | DL6UXL | -18 / -5 | 5 | ✓ Full exchange observed |
| 10-05 16:55 | 40m | -3 / - | IN3IBW | +6 / -1 | 4 | ✓ Closing observed |
| 10-05 16:49 | 40m | -10 / - | R9FGJ | - / -13 | 3 | ✓ Closing fragment |
| 10-05 15:32 | 80m | +4 / - | R80SAA | - / - | 2 | Partial capture |
| 10-05 15:31 | 80m | +4 / - | UA4UK | - / - | 2 | Partial capture |
| 10-04 19:33 | 80m | -1 / - | SP2SPP | +2 / - | 5 | ✓ Closing observed |
| 10-04 19:16 | 80m | 0 / - | R3RAO | - / -15 | 2 | ✓ Closing fragment |
| 10-04 19:02 | 80m | +2 / -12 | R3DPZ | 0 / +8 | 8 | ✓ Full exchange observed |
| 10-04 18:59 | 80m | +1 / - | DO6AZ | - / - | 5 | Partial capture |
| 10-04 18:58 | 80m | +8 / - | SP7BRK | -6 / -6 | 3 | ✓ Closing observed |
| 10-04 18:40 | 40m | -6 / - | IU8CEC | - / -17 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 173345 -16 1731 R3LDK U1BD -24 (x2) 173430 -13 1731 U1BD R3LDK R-17 173530 +2 441 RW6AP R3LDK KO64 (x7) 174045 -3 910 F/DK5UR/P R3LDK KO64 (x5)
UTC dB Audio Message 192015 -3 2238 CQ R3LDK KO64 192100 -18 1858 R3LDK G0OIL JO03 192115 -10 2238 G0OIL R3LDK -14 192130 -16 1858 R3LDK G0OIL R-10 192145 -15 2238 G0OIL R3LDK RR73 192200 -11 1858 R3LDK G0OIL 73 192245 -8 2238 CQ R3LDK KO64 (x4) 192530 -13 1834 R3LDK DL7ULA -13 192615 +0 3033 CQ R3LDK KO64 (x4)
UTC dB Audio Message 185615 +6 2057 OZ1A R3LDK 73 185815 +7 2057 SQ8AZT R3LDK KO64 185930 -3 2057 DC5IMM R3LDK KO64 (x4) 190145 +4 1129 R3LDK DC5IMM -14 190200 +0 2057 DC5IMM R3LDK R-05 190215 +6 1129 R3LDK DC5IMM RR73 190230 +3 2057 DC5IMM R3LDK 73 190430 -6 1949 R2BPS R3LDK KO64 (x2) 190630 -7 1946 SQ2DPB R3LDK KO64 190730 +13 754 R2BPS R3LDK KO64 (x2)
UTC dB Audio Message 111600 -13 704 R3LDK PD2FS -19 (x8) 092245 -16 1885 R3LDK S57NA JN65 (x2) 092745 -14 2083 R3LDK IK4UPG +02 (x2) 120700 -13 1447 R3LDK EA7BEM IM66 (x3)
UTC dB Audio Message 074215 +7 2622 R9SEP R3LDK KO64 (x3) 074500 -3 1984 3V8HP R3LDK -14 (x5) 074845 -18 1060 R3LDK R6DZO -05 110515 -2 1733 DB0IPA R3LDK KO64 (x4) 191715 -2 2217 R3LDK F4GRW +08 (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.
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