K4CVL — 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 K4CVL, decoded by SO8OO in southeastern Poland. 17 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-10-17.
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 17 FT8 messages attributed to K4CVL as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (82%), followed by 80 m (12%) and 40 m (6%). In this small sample, the estimated median decoder S/N was -5 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-10-17 23:54 UTC
Observed FT8 message patterns
- Attributed sample
- 17 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -5 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 14.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with K4CVL in decoded directed-looking exchanges:
Most frequent locator attributed to K4CVL
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
- EL87 · 12 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,675 km (approx.)
- Last such locator decoded
- 2026-10-17 23:54 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 | K4CVL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 04:01 | 160m | - / -19 | SV2BWY | -4 / - | 3 | ✓ Closing fragment |
| 10-19 04:09 | 60m | - / -13 | EB1LA | -2 / - | 2 | ✓ Closing fragment |
| 10-19 03:56 | 60m | - / -12 | 5P6MJ | +8 / - | 2 | ✓ Closing fragment |
| 10-17 23:54 | 80m | -18 / - | SN2JOTA | - / - | 2 | Partial capture |
| 08-12 22:30 | 20m | - / -13 | DL3MIB | +7 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 040130 -3 2378 K4CVL SV2BWY -19 (x3) 040400 +6 701 K4CVL SX37VER -21
UTC dB Audio Message 035630 +9 2037 K4CVL 5P6MJ -12 (x2) 040930 -2 788 K4CVL EB1LA -13 (x2)
UTC dB Audio Message 235415 -14 451 SN2JOTA K4CVL EL87 (x2)
UTC dB Audio Message 223015 +8 1119 K4CVL DL3MIB JN57 (x3) 223245 -10 303 K4CVL RA3ZH KO81 223245 -20 1896 K4CVL R2ZCA KO81
CW
No CW receptions recorded for this callsign in the last 30 days.
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