SV4FFK — 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 SV4FFK, decoded by SO8OO in southeastern Poland. 2,700 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 51 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-23.
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 2,700 FT8 messages attributed to SV4FFK as the transmitting token by decoded message structure across 51 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (76%), followed by 60 m (15%) and 80 m (6%). Most decodes (83%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-10-23 00:40 UTC
Observed FT8 message patterns
- Attributed sample
- 2,700 messages
- Active dates
- 51 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -18 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 503, moderate (-15 to -9 dB) 1,069, strong (≥ -8 dB) 1,128.
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 SV4FFK 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 SV4FFK
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
- KM19 · 2,289 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,164 km (approx.)
- Last such locator decoded
- 2026-10-23 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 | SV4FFK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 16:47 | 160m | - / -11 | YO2OXD | -4 / - | 3 | ✓ Closing fragment |
| 10-23 00:37 | 60m | - / -7 | UN7JX | -5 / - | 3 | ✓ Closing fragment |
| 10-23 00:28 | 60m | -12 / - | VA3DIF | - / -15 | 2 | ✓ Closing fragment |
| 10-23 00:26 | 60m | -10 / - | DG5PW | - / -7 | 2 | ✓ Closing fragment |
| 10-23 00:18 | 60m | -8 / - | SP9TBT | - / -15 | 2 | ✓ Closing fragment |
| 10-23 00:13 | 60m | -11 / - | DL1OBF | -19 / +1 | 6 | ✓ Closing observed |
| 10-23 00:13 | 60m | -11 / - | KB4OLM | - / -17 | 3 | ✓ Closing fragment |
| 10-23 00:12 | 60m | -14 / -3 | PA4PA | +12 / +2 | 8 | ✓ Full exchange observed |
| 10-22 18:12 | 160m | - / -13 | IK4HPW | -20 / - | 4 | ✓ Closing fragment |
| 10-22 01:35 | 80m | - / - | ON4MAP | 0 / - | 4 | Partial capture |
| 10-22 01:33 | 80m | - / -8 | ON1JP | -8 / - | 8 | Partial capture |
| 10-22 01:31 | 80m | - / -16 | EA2DYB | +10 / - | 3 | ✓ Closing fragment |
| 10-22 00:26 | 60m | -6 / - | LZ1BK | - / -5 | 2 | ✓ Closing fragment |
| 10-22 00:26 | 60m | - / -4 | CT7AUT | -11 / - | 5 | ✓ Closing fragment |
| 10-22 00:21 | 60m | -8 / - | KZ4NS | -15 / -16 | 2 | ✓ Closing observed |
| 10-22 00:20 | 60m | -10 / - | IU3VGK | - / -8 | 2 | ✓ Closing fragment |
| 10-21 16:05 | 160m | - / -17 | E73S | +8 / - | 4 | ✓ Closing fragment |
| 10-21 01:18 | 60m | -16 / - | W3BL | - / -13 | 2 | ✓ Closing fragment |
| 10-19 16:39 | 160m | -14 / - | HA6NN | +2 / - | 2 | ✓ Closing observed |
| 10-19 01:11 | 160m | - / - | RW9AW | -10 / - | 2 | Partial capture |
| 10-19 00:23 | 60m | -18 / -12 | CT1FJO | -15 / +2 | 4 | ✓ Full exchange observed |
| 10-18 23:54 | 60m | - / -9 | IW5BT | -12 / - | 2 | ✓ Closing fragment |
| 10-18 23:42 | 60m | -16 / -11 | EB1LA | -2 / -5 | 5 | ✓ Full exchange observed |
| 10-17 00:59 | 60m | -7 / +3 | SP1ZMO | -10 / -5 | 15 | ✓ Full exchange observed |
| 10-17 00:55 | 60m | -5 / - | W3BL | - / -17 | 6 | Partial capture |
| 10-17 00:55 | 60m | - / - | SP1ZMO | -9 / - | 4 | Partial capture |
| 10-17 00:50 | 60m | -6 / - | VP2MAW | - / - | 6 | Partial capture |
| 10-17 00:27 | 160m | -11 / -8 | SM1NJC | -5 / - | 4 | ✓ Closing observed |
| 10-16 01:11 | 40m | -12 / - | R8LCA | - / -25 | 4 | ✓ Closing fragment |
| 10-16 01:06 | 40m | - / - | R4FDK | -10 / - | 2 | Partial capture |
| 10-16 00:49 | 160m | -14 / -14 | OH5KNL | +9 / -12 | 6 | ✓ Full exchange observed |
| 10-16 00:49 | 160m | -9 / -19 | OZ9GA | -9 / -22 | 9 | ✓ Full exchange observed |
| 10-16 00:16 | 160m | -16 / - | OH5KNL | - / -16 | 3 | Partial capture |
| 10-16 00:13 | 160m | -18 / -20 | IU3RRX | -5 / -9 | 6 | ✓ Full exchange observed |
| 10-15 16:01 | 160m | - / -19 | OH5KNL | -4 / - | 2 | Partial capture |
| 10-15 01:36 | 60m | - / - | SM3ULU | -14 / - | 2 | Partial capture |
| 10-15 01:32 | 60m | - / -7 | OH2GQC | -10 / - | 3 | ✓ Closing fragment |
| 10-14 01:11 | 160m | - / - | F4EGM | -14 / - | 2 | Partial capture |
| 10-13 01:01 | 40m | - / -14 | EA5FD | -7 / - | 3 | ✓ Closing fragment |
| 10-13 00:21 | 60m | -14 / - | W1NG | - / -22 | 5 | ✓ Closing fragment |
| 10-13 00:07 | 160m | -2 / - | EA4HPY | -8 / -15 | 3 | ✓ Closing observed |
| 10-12 16:31 | 60m | - / - | OZ9FF | -18 / - | 2 | Partial capture |
| 10-12 16:25 | 60m | -19 / -6 | DK3GI | -1 / -15 | 4 | ✓ Full exchange observed |
| 10-12 16:14 | 160m | - / - | RA3BY | -6 / - | 4 | Partial capture |
| 10-12 15:44 | 80m | - / - | RA6ANN | -14 / - | 2 | Partial capture |
| 10-12 15:43 | 80m | - / - | HA6WT | -3 / - | 6 | Partial capture |
| 10-12 01:24 | 160m | - / -4 | F1PBZ | -2 / - | 3 | Partial capture |
| 10-11 16:57 | 160m | -19 / -23 | R3LBK | 0 / - | 3 | ✓ Closing observed |
| 10-11 16:28 | 60m | - / -5 | OK8AW | +1 / - | 4 | ✓ Closing fragment |
| 10-11 04:25 | 160m | -5 / -18 | IK1UGX | -10 / -8 | 4 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 011730 -16 1168 CQ SV4FFK KM19 (x8) 181245 -24 1719 SV4FFK IK4HPW JN54 (x4) 164715 -4 2511 SV4FFK YO2OXD KN05 (x3)
UTC dB Audio Message 003300 -7 988 CQ SV4FFK KM19 (x9) 003745 -5 2563 SV4FFK UN7JX NN19 (x3) 003900 -14 988 CQ SV4FFK KM19 (x3)
UTC dB Audio Message 013345 -5 1268 SV4FFK ON1JP -08 (x2) 013430 -11 1168 CQ SV4FFK KM19 013445 -11 1268 SV4FFK ON1JP -08 013500 -11 1168 CQ SV4FFK KM19 013515 +3 1212 SV4FFK ON4MAP JO20 013515 -11 1268 SV4FFK ON1JP -08 013530 -16 1167 CQ SV4FFK KM19 013545 -8 1268 SV4FFK ON1JP -08 013600 -8 1168 CQ SV4FFK KM19 013615 -5 1268 SV4FFK ON1JP -08 013645 -5 1212 SV4FFK ON4MAP JO20 013645 -10 1268 SV4FFK ON1JP -08 013715 -1 1212 SV4FFK ON4MAP JO20 (x2)
UTC dB Audio Message 235330 -8 878 CQ SV4FFK KM19 (x2) 010115 -2 2433 SV4FFK EA5FD IM99 (x3) 010600 -14 933 CQ SV4FFK KM19 (x2) 010645 -10 934 SV4FFK R4FDK LO23 010700 -13 933 CQ SV4FFK KM19 010715 -11 934 SV4FFK R4FDK LO23 010815 -17 938 SV4FFK RX9WM 73 011100 -12 933 R8LCA SV4FFK -25 (x4)
UTC dB Audio Message 003915 -5 577 SV4FFK F1PBZ -18 003930 -21 1540 CQ SV4FFK KM19 003945 -3 577 SV4FFK F1PBZ -18 011115 -20 2125 SV4FFK 5Z4VJ KI88 (x3) 004845 -9 787 SV4FFK KC8KCM R-17 (x2) 005145 -12 872 SV4FFK KE2CJL FN13 005345 -13 2046 SV4FFK NF3R R-15 005345 -15 871 SV4FFK KE2CJL R-07 005415 -13 2046 SV4FFK NF3R 73
UTC dB Audio Message 074230 -16 951 CQ SV4FFK KM19 a1 (x2) 165445 -6 2635 SV4FFK F1PBZ -13
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