R4FCK — 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 R4FCK, decoded by SO8OO in southeastern Poland. 994 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 50 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-11-03.
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 994 FT8 messages attributed to R4FCK 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 (49%), followed by 20 m (43%) and 10 m (6%). Most decodes (77%) fell within the six-hour window 12:00-18:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.
Overview
Bands
Last attributed message: 2026-11-03 15:35 UTC
Observed FT8 message patterns
- Attributed sample
- 994 messages
- Active dates
- 50 UTC dates
- Estimated median S/N
- -12 dB
- Estimated 10th-90th percentile
- -20 to -4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 289, moderate (-15 to -9 dB) 444, strong (≥ -8 dB) 261.
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 R4FCK 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 R4FCK
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 · 611 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,639 km (approx.)
- Last such locator decoded
- 2026-11-03 15:35 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 | R4FCK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-03 16:08 | 40m | - / -3 | PD0MNO | -15 / - | 2 | Partial capture |
| 11-03 16:03 | 40m | - / -9 | DL3FSC | +2 / - | 4 | Partial capture |
| 11-03 15:49 | 40m | - / -22 | PD1DTH | -8 / - | 5 | ✓ Closing fragment |
| 11-03 15:40 | 40m | - / -9 | 5B4AAB | +2 / - | 2 | ✓ Closing fragment |
| 11-03 15:27 | 40m | -12 / - | YO5OHT | - / -9 | 4 | Partial capture |
| 11-03 15:22 | 40m | -22 / - | R0XAJ/1 | - / - | 3 | Partial capture |
| 11-03 15:20 | 40m | -12 / - | HA0AA | - / - | 2 | Partial capture |
| 11-03 15:17 | 40m | -12 / -5 | DK2CC | -8 / -13 | 4 | ✓ Full exchange observed |
| 11-01 15:09 | 40m | -24 / -13 | OM2IB | -1 / - | 3 | ✓ Closing observed |
| 11-01 15:08 | 40m | - / -12 | RA6BL | -6 / - | 2 | ✓ Closing fragment |
| 11-01 15:04 | 40m | - / -6 | PD1B | -7 / - | 3 | ✓ Closing fragment |
| 11-01 14:56 | 40m | - / -2 | OH6KP | -14 / - | 2 | Partial capture |
| 11-01 14:50 | 40m | - / - | RN6LRA | -6 / - | 4 | ✓ Closing fragment |
| 11-01 14:49 | 40m | - / -6 | R1MA | +4 / - | 2 | ✓ Closing fragment |
| 11-01 14:27 | 40m | -23 / -15 | YT3BL | +3 / -17 | 4 | ✓ Full exchange observed |
| 11-01 14:24 | 40m | - / -7 | RM7M | -14 / - | 2 | ✓ Closing fragment |
| 10-31 15:40 | 40m | - / -14 | IV3XPP | +4 / - | 2 | ✓ Closing fragment |
| 10-31 15:32 | 40m | - / -16 | LZ26IPA | -6 / - | 2 | Partial capture |
| 10-31 15:23 | 40m | - / -15 | RD7O | -12 / - | 3 | ✓ Closing fragment |
| 10-31 15:22 | 40m | - / -16 | RC3D | -2 / - | 7 | ✓ Closing fragment |
| 10-31 15:10 | 40m | - / 0 | RU3DNN | -7 / - | 4 | ✓ Closing fragment |
| 10-31 15:08 | 40m | -19 / - | LY8O | - / - | 3 | Partial capture |
| 10-26 15:44 | 40m | -10 / - | R6ACD | - / - | 2 | Partial capture |
| 10-26 15:40 | 40m | -12 / - | R6AA | - / - | 2 | Partial capture |
| 10-26 15:38 | 40m | -12 / - | R8AKS | - / +2 | 2 | ✓ Closing fragment |
| 10-26 15:36 | 40m | -13 / -4 | SN9Q | -4 / -11 | 5 | ✓ Full exchange observed |
| 10-26 15:30 | 80m | - / -22 | OK2BUZ | +20 / - | 3 | Partial capture |
| 10-26 15:22 | 80m | -17 / - | UA0ACZ | - / - | 3 | Partial capture |
| 10-26 15:20 | 80m | -11 / - | R4SCQ | - / +3 | 3 | ✓ Closing fragment |
| 10-23 15:25 | 40m | - / -14 | SP9XG | -6 / - | 2 | ✓ Closing fragment |
| 10-23 15:19 | 40m | -9 / -10 | PA2DX | -11 / -7 | 6 | ✓ Full exchange observed |
| 10-23 15:17 | 40m | - / -8 | UB1CCL | -10 / - | 2 | ✓ Closing fragment |
| 10-23 15:14 | 40m | - / -11 | R1WCK | -12 / - | 2 | Partial capture |
| 10-23 15:13 | 40m | -15 / - | RA3LAT | - / - | 3 | ✓ Closing fragment |
| 10-23 15:08 | 40m | -13 / - | R6LI | -4 / -8 | 2 | ✓ Closing observed |
| 10-23 15:01 | 40m | -12 / - | R6ZL | - / -13 | 3 | ✓ Closing fragment |
| 10-23 14:59 | 40m | -13 / -11 | YO4DW | 0 / -5 | 6 | ✓ Full exchange observed |
| 10-23 14:56 | 40m | - / -2 | SV8DCY | 0 / - | 2 | ✓ Closing fragment |
| 10-22 15:33 | 40m | - / -15 | PE1PIX | 0 / - | 3 | ✓ Closing fragment |
| 10-22 15:25 | 40m | -16 / -11 | RY6LAL | -9 / -12 | 3 | ✓ Full exchange observed |
| 10-22 15:18 | 40m | - / -1 | PD7JLP | -5 / - | 3 | ✓ Closing fragment |
| 10-22 15:14 | 40m | -16 / -9 | LB8TG | -16 / -15 | 6 | ✓ Full exchange observed |
| 10-22 15:03 | 40m | - / -19 | M7CCZ | -17 / - | 6 | Partial capture |
| 10-22 14:59 | 40m | -21 / -19 | SM4/DK5ED | -10 / - | 2 | Partial capture |
| 10-22 14:55 | 40m | - / -21 | M7CCZ | -18 / - | 10 | Partial capture |
| 10-22 14:54 | 40m | -14 / - | RT8T | - / +10 | 2 | ✓ Closing fragment |
| 10-22 14:51 | 40m | - / -7 | 9A7BB | -3 / - | 3 | ✓ Closing fragment |
| 10-22 14:47 | 40m | - / -6 | OM3WFH | +9 / - | 2 | ✓ Closing fragment |
| 10-22 14:43 | 40m | - / +3 | YL3ASK | -8 / - | 2 | ✓ Closing fragment |
| 10-22 14:40 | 40m | -23 / -22 | M0OXO | -18 / - | 5 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 154015 +1 970 R4FCK 5B4AAB -09 (x2) 154615 +7 741 R4FCK RV6AVU +02 154915 -7 2673 R4FCK PD1DTH -22 (x5) 160315 +2 1215 R4FCK DL3FSC -09 (x4) 160715 -17 2255 R4FCK G8YPE RR73 160845 -15 1829 R4FCK PD0MNO -03 (x2)
UTC dB Audio Message 163945 -9 2554 RV3X R4FCK 73 164030 +9 2336 R4FCK YO4BXX -10 164045 -13 2336 YO4BXX R4FCK R-02 164100 +3 2336 R4FCK YO4BXX RR73 164115 -15 2336 YO4BXX R4FCK 73 152045 -12 2454 R4SCQ R4FCK LO23 (x3) 152215 -18 2454 UA0ACZ R4FCK LO23 (x3) 152445 -16 2452 UR5SG R4FCK LO23 153000 +19 2752 R4FCK OK2BUZ -22 (x3)
UTC dB Audio Message 155445 -9 2209 R4FCK SP4LO KO13 (x2)
UTC dB Audio Message 145900 -20 1579 R4FCK RU3X KO73 (x4) 151530 -24 1645 R4FCK R7AW -18 151730 -22 2042 R4FCK UA4PPQ LO54 (x2)
UTC dB Audio Message 053345 -5 2181 R4FCK UN0GY RR73 134630 -15 1523 R4FCK F4MOA -20 (x8) 135200 -16 2282 R4FCK RD0L -08 135330 -1 2580 R4FCK R6DOB/M -19 140500 -17 1764 R4FCK EX7CQ -22 150615 +4 409 UB0SMX/P R4FCK LO23 150815 -10 1957 LZ3DIV R4FCK LO23 (x2)
UTC dB Audio Message 105200 +1 793 R4FCK E70SZ JN84 (x2) 144430 -11 735 R4FCK RU4I -11 075545 -16 2325 R4FCK RZ6L 73
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.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee