UA4PCM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UA4PCM, decoded by SO8OO in southeastern Poland. 9 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-18.
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 9 FT8 messages attributed to UA4PCM as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (89%), followed by 20 m (11%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-18 03:34 UTC
Observed FT8 message patterns
- Attributed sample
- 9 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -15 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 1.
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 UA4PCM in decoded directed-looking exchanges:
Most frequent locator attributed to UA4PCM
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
- LO45 · 6 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,920 km (approx.)
- Last such locator decoded
- 2026-09-18 03:33 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 | UA4PCM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-18 03:34 | 40m | - / - | IU8RFW | -10 / - | 6 | Partial capture |
| 09-18 03:34 | 40m | - / - | RZ5D | -10 / - | 2 | Partial capture |
| 09-18 03:33 | 40m | -17 / - | HG0NPJ | - / - | 2 | ✓ Closing fragment |
| 09-18 01:41 | 40m | -16 / - | EP2AES | - / - | 5 | Partial capture |
| 07-04 05:24 | 20m | - / -15 | I1RJP | -6 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 014215 -15 1472 EP2AES UA4PCM LO45 (x4) 030115 -8 2093 R1BDX UA4PCM -12 033300 -16 2093 HG0NPJ UA4PCM LO45 (x2) 033415 -9 470 UA4PCM RZ5D KN75 033415 -9 2094 UA4PCM IU8RFW JN70 033445 -11 470 UA4PCM RZ5D KN75 033445 -13 2094 UA4PCM IU8RFW JN70 (x5)
UTC dB Audio Message 052415 -8 346 UA4PCM I1RJP JN45 (x2)
UTC dB Audio Message 181100 -6 962 UA4PCM R6TA LN13
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