SP4YB — 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 SP4YB, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-13 and 2026-11-01.
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 28 FT8 messages attributed to SP4YB as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (61%), followed by 40 m (39%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (100%); the estimated median was +5 dB.
Overview
Bands
Last attributed message: 2026-11-01 10:11 UTC
Observed FT8 message patterns
- Attributed sample
- 28 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- +5 dB
- Estimated 10th-90th percentile
- -1 to +12 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 28.
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 SP4YB 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 SP4YB
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
- KO12 · 16 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 297 km (approx.)
- Last such locator decoded
- 2026-11-01 10:09 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 | SP4YB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-01 10:08 | 40m | +1 / - | M0BEW | - / 0 | 4 | ✓ Closing fragment |
| 10-31 18:33 | 80m | +8 / - | LZ26IPA | - / - | 2 | Partial capture |
| 10-31 16:43 | 80m | +8 / -6 | UA3SID | -1 / - | 7 | ✓ Full exchange observed |
| 10-31 16:42 | 80m | +11 / - | R3MDJ | - / -3 | 3 | Partial capture |
| 10-31 14:32 | 80m | +12 / - | RA9AGL | - / - | 2 | Partial capture |
| 10-31 14:25 | 40m | 0 / - | RA9LL | - / -15 | 3 | ✓ Closing fragment |
| 10-10 09:07 | 40m | 0 / - | PE1NAO | - / -8 | 3 | ✓ Closing fragment |
| 10-09 16:19 | 40m | - / - | US3EW | -7 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 161930 -6 2740 SP4YB US3EW KN78 (x2) 090730 +2 684 PE1NAO SP4YB KO12 (x3) 142500 -7 683 RA9LL SP4YB KO12 (x3) 100830 +0 684 M0BEW SP4YB KO12 (x4) 101130 +2 684 GB1RBL SP4YB R-04
UTC dB Audio Message 143200 +16 646 RA9AGL SP4YB KO12 (x2) 164245 +15 647 R3MDJ SP4YB KO12 164315 +5 647 UA3SID SP4YB KO12 (x2) 164400 +0 753 SP4YB UA3SID -06 164415 +10 647 R3MDJ SP4YB R-03 164430 -7 753 SP4YB UA3SID RR73 164445 +7 647 R3MDJ SP4YB R-03 164515 +12 646 UA3SID SP4YB R+22 164600 +3 753 SP4YB UA3SID KO93 164615 +10 647 UA3SID SP4YB +17 183100 +10 647 R4CHN SP4YB KO12 183315 +5 647 LZ26IPA SP4YB KO12 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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