R4FDW — 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 R4FDW, decoded by SO8OO in southeastern Poland. 15,583 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 71 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-18.
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 15,583 FT8 messages attributed to R4FDW as the transmitting token by decoded message structure across 71 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%), followed by 40 m (0%) and 10 m (0%). The busiest six-hour window was 14:00-20:00 UTC, containing 41% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13.1 dB.
Overview
Bands
Last attributed message: 2026-09-18 02:44 UTC
Observed FT8 message patterns
- Attributed sample
- 15,583 messages
- Active dates
- 71 UTC dates
- Estimated median S/N
- -13.1 dB
- Estimated 10th-90th percentile
- -21 to -3.2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5,742, moderate (-15 to -9 dB) 5,947, strong (≥ -8 dB) 3,894.
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 R4FDW 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 R4FDW
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
- LO23 · 7,394 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,639 km (approx.)
- Last such locator decoded
- 2026-09-12 23:35 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 | R4FDW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 14:21 | 10m | - / -17 | EI9FVB | -2 / - | 2 | Partial capture |
| 10-23 14:07 | 10m | - / -12 | 4X1UF | -2 / - | 2 | ✓ Closing fragment |
| 10-23 05:11 | 40m | - / -11 | R2SDZ | -4 / - | 2 | ✓ Closing fragment |
| 10-23 04:52 | 40m | - / -17 | RA3DAD | -12 / - | 4 | ✓ Closing fragment |
| 10-21 23:40 | 40m | - / -15 | IK0CHU | -6 / - | 4 | Partial capture |
| 10-14 05:36 | 40m | - / -10 | OH5VT | -5 / - | 5 | Partial capture |
| 10-14 04:28 | 40m | - / -2 | UR5LAK | +4 / - | 2 | ✓ Closing fragment |
| 10-12 05:58 | 40m | - / -18 | R7ZY | -9 / - | 2 | ✓ Closing fragment |
| 10-11 22:26 | 40m | - / -18 | S58N | +18 / - | 3 | ✓ Closing fragment |
| 10-10 00:39 | 40m | - / -11 | ON6WDL | -2 / - | 5 | Partial capture |
| 10-09 21:43 | 40m | - / -21 | SQ2RAD | -6 / - | 2 | Partial capture |
| 10-09 21:33 | 40m | - / -15 | DL5RMH | -2 / - | 2 | ✓ Closing fragment |
| 10-09 20:54 | 40m | - / -11 | IK2JYT | -2 / - | 4 | Partial capture |
| 10-07 21:04 | 40m | - / -18 | EX7CQ | -7 / - | 2 | ✓ Closing fragment |
| 10-06 19:07 | 80m | - / - | 9A4ZM | +14 / - | 2 | Partial capture |
| 10-06 19:07 | 80m | - / - | YU65AEC | +7 / - | 4 | ✓ Closing fragment |
| 10-06 04:07 | 40m | - / -20 | RA6ATZ | -14 / - | 2 | ✓ Closing fragment |
| 10-06 04:04 | 40m | - / -16 | ES2DR | -18 / - | 2 | ✓ Closing fragment |
| 10-06 00:21 | 40m | - / -20 | I3LID | -5 / - | 3 | Partial capture |
| 10-03 03:07 | 40m | - / -20 | RK6OU | +4 / - | 2 | ✓ Closing fragment |
| 10-03 02:50 | 40m | - / -13 | RD3FY | -3 / - | 3 | ✓ Closing fragment |
| 10-02 23:07 | 40m | - / - | DG5PW | -19 / - | 3 | Partial capture |
| 10-01 02:45 | 40m | - / -16 | UA9CR | -10 / - | 2 | ✓ Closing fragment |
| 09-30 22:48 | 40m | - / - | F4BYA | +12 / - | 4 | Partial capture |
| 09-30 22:40 | 40m | - / -15 | GM6URC | -20 / - | 3 | ✓ Closing fragment |
| 09-30 21:13 | 40m | - / -14 | IK4DCW | +11 / - | 2 | ✓ Closing fragment |
| 09-30 04:15 | 40m | - / -17 | US3EW | -16 / - | 2 | ✓ Closing fragment |
| 09-30 02:14 | 40m | - / -24 | IT9IJF | -11 / - | 10 | Partial capture |
| 09-30 01:55 | 40m | - / -20 | A41KB | -9 / - | 2 | Partial capture |
| 09-29 23:47 | 40m | - / -22 | IW8RPQ | -20 / - | 2 | ✓ Closing fragment |
| 09-29 05:03 | 40m | - / -14 | RM3ZK | -15 / - | 2 | ✓ Closing fragment |
| 09-29 03:56 | 40m | - / -12 | R6OP | -2 / - | 2 | ✓ Closing fragment |
| 09-29 03:54 | 40m | - / -13 | R6OAF | -7 / - | 3 | Partial capture |
| 09-29 03:44 | 40m | - / -23 | EK/RX3DPK | -6 / - | 2 | Partial capture |
| 09-29 02:27 | 40m | - / -16 | F6HUK | +7 / - | 3 | ✓ Closing fragment |
| 09-21 19:50 | 40m | - / -24 | 9A60CBM | +6 / - | 2 | Partial capture |
| 09-20 10:08 | 40m | - / -6 | RA3ZOM | -14 / - | 2 | ✓ Closing fragment |
| 09-18 01:04 | 40m | - / -14 | SP3IBS | -15 / - | 2 | ✓ Closing fragment |
| 09-18 00:37 | 40m | - / - | TA4SSK | -11 / - | 5 | Partial capture |
| 09-17 23:28 | 40m | - / -18 | G8KHF | +10 / - | 2 | ✓ Closing fragment |
| 09-17 22:11 | 40m | - / -16 | IK3ERN | -1 / - | 3 | Partial capture |
| 09-17 22:05 | 40m | - / -18 | SP5EXA | -20 / - | 3 | Partial capture |
| 09-13 03:53 | 40m | - / -12 | RA3LBK | +6 / - | 2 | ✓ Closing fragment |
| 09-13 03:43 | 40m | - / -12 | RO3ZR | -14 / - | 2 | ✓ Closing fragment |
| 09-12 21:50 | 40m | - / -17 | UD6X | -18 / - | 2 | ✓ Closing fragment |
| 09-12 20:45 | 40m | - / -15 | OH5KT | -4 / - | 2 | ✓ Closing fragment |
| 09-11 04:01 | 40m | - / -10 | UR4LRG | +4 / - | 2 | ✓ Closing fragment |
| 09-11 03:59 | 40m | - / -22 | RZ6L | +9 / - | 4 | ✓ Closing fragment |
| 09-11 03:27 | 40m | - / -16 | RZ6ALZ | -8 / - | 3 | ✓ Closing fragment |
| 09-11 03:20 | 40m | - / - | YL2KF | -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 103130 -10 1378 R4FDW DL5MR JO60 (x2) 090700 -12 2295 R4FDW UA0SR R-12 140730 -4 253 R4FDW 4X1UF R-12 (x2) 142145 -1 669 R4FDW EI9FVB R-17 (x2)
UTC dB Audio Message 234000 -2 1328 R4FDW IK0CHU R-15 (x4) 044800 -6 1322 R4FDW RA3DAD KO95 044930 -17 1147 R4FDW R5VCW 73 045200 -6 1322 R4FDW RA3DAD KO95 (x4) 050100 -9 658 R4FDW R6ZS R-08 051100 -4 1599 R4FDW R2SDZ R-11 (x2) 051200 -9 1248 R4FDW RU3DNN R-22 051600 -16 1904 R4FDW UA3PAB/QRP R-13
UTC dB Audio Message 064545 -3 2885 R4FDW LA7DFA R-16
UTC dB Audio Message 190230 +5 1696 R4FDW SQ5PTZ KO02 190730 +4 2279 <R4FDW> YU65AEC 73 190730 +12 588 R4FDW 9A4ZM JN86 190800 +13 2279 R4FDW YU65AEC 190800 +15 587 R4FDW 9A4ZM JN86 190830 +7 2279 R4FDW YU65AEC (x2)
UTC dB Audio Message 061215 -10 1942 S57ESG R4FDW -18 061300 -13 1942 UT0IN R4FDW -04 (x9) 061915 -13 1942 CQ R4FDW LO23 (x2) 062830 -6 1822 R6OH R4FDW -08 (x2) 063830 -1 1809 R7FN R4FDW -14
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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