PC4W — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving PC4W, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-30 and 2026-09-16.
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 30 FT8 messages attributed to PC4W as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (83%), followed by 80 m (17%). In this small sample, the estimated median decoder S/N was -10 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-16 19:20 UTC
Observed FT8 message patterns
- Attributed sample
- 30 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -16 to -5 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 10.
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 PC4W 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 PC4W
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
- JO21 · 13 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-09-16 19:18 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 | PC4W S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-16 19:26 | 80m | - / - | DO9BAU | +7 / - | 13 | Partial capture |
| 09-16 19:25 | 80m | - / -18 | YO4NF | +12 / - | 2 | Partial capture |
| 09-16 19:22 | 80m | - / -5 | DK7ZT | -2 / - | 5 | ✓ Closing fragment |
| 09-16 19:22 | 80m | - / - | EA1IOK | -15 / - | 5 | ✓ Closing fragment |
| 09-16 19:18 | 80m | -14 / - | DO7KGB | - / -4 | 5 | Partial capture |
| 08-30 15:07 | 20m | -6 / - | OH3DJP | - / +7 | 3 | ✓ Closing fragment |
| 08-30 14:59 | 20m | -16 / - | EN35UKR | - / -6 | 3 | Partial capture |
| 08-30 13:24 | 20m | -12 / - | OE6HTG | - / - | 2 | Partial capture |
| 08-30 12:27 | 20m | -14 / - | OH1LA | -18 / +10 | 3 | ✓ Closing observed |
| 08-30 12:13 | 20m | -12 / - | <...> | - / -1 | 3 | Partial capture |
| 08-30 11:55 | 20m | -5 / - | AO5FSB | - / +8 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 192530 +8 1419 PC4W YO4NF -18 192600 -8 452 PC4W EA1IOK 73 192600 +9 2502 PC4W DO9BAU JO62 (x13)
UTC dB Audio Message 122600 -9 2034 CQ PC4W JO21 (x2) 122715 -18 2034 PC4W OH1LA KP01 122730 -9 2034 OH1LA PC4W +10 (x2) 122930 -6 866 SQ8GMW PC4W JO21 132415 -12 1765 OE6HTG PC4W JO21 (x2) 145900 -13 2008 EN35UKR PC4W JO21 (x3) 150430 -10 2008 <...> PC4W R-06 150745 -6 818 OH3DJP PC4W JO21 (x3)
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.
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