RX4D — 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 RX4D, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-18 and 2026-10-30.
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 21 FT8 messages attributed to RX4D 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 (57%), followed by 10 m (43%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-10-30 19:43 UTC
Observed FT8 message patterns
- Attributed sample
- 21 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -15 dB
- Estimated 10th-90th percentile
- -21 to -9 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 2.
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 RX4D in decoded directed-looking exchanges:
Most frequent locator attributed to RX4D
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
- LO21 · 5 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,636 km (approx.)
- Last such locator decoded
- 2026-10-30 19:41 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 | RX4D S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-30 19:41 | 40m | -8 / - | BG4UCZ | - / -19 | 3 | ✓ Closing fragment |
| 10-30 19:37 | 40m | -19 / - | OH/DL8DTL | - / -3 | 2 | Partial capture |
| 10-30 19:34 | 40m | -12 / - | SP5MXZ | - / - | 3 | ✓ Closing fragment |
| 10-30 19:31 | 80m | - / -19 | R1CBW | -10 / - | 3 | ✓ Closing fragment |
| 10-30 19:27 | 80m | - / -7 | YL3NU | -19 / - | 3 | Partial capture |
| 10-30 19:26 | 80m | - / -6 | ES2AJ | -3 / - | 2 | ✓ Closing fragment |
| 10-30 19:22 | 80m | - / - | RA3VX | -10 / - | 2 | Partial capture |
| 10-30 19:16 | 80m | - / -14 | R7BO | -1 / - | 2 | ✓ Closing fragment |
| 10-30 19:14 | 80m | - / -14 | RM5F | -4 / - | 3 | ✓ Closing fragment |
| 10-30 15:54 | 40m | -16 / -11 | 9A4ZM | -11 / - | 5 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 155400 -14 2426 CQ RX4D LO21 155445 -4 2422 RX4D 9A4ZM R-11 (x4) 155700 -16 2421 9A4ZM RX4D RR73 193445 -9 2115 SP5MXZ RX4D LO21 (x3) 193715 -17 2115 OH/DL8DTL RX4D LO21 (x2) 194100 -10 1191 BD8ELZ RX4D LO21 194130 -11 2198 BG4UCZ RX4D LO21 (x3)
UTC dB Audio Message 191445 -6 955 RX4D RM5F KO85 (x3) 191645 -1 1373 RX4D R7BO -14 (x2) 192215 -11 962 RX4D RA3VX LO06 (x2) 192615 -4 1636 RX4D ES2AJ -06 192715 -21 1870 RX4D YL3NU R-07 192715 -2 1553 RX4D ES2AJ RR73 192745 -15 1870 RX4D YL3NU R-07 (x2) 193115 -6 1833 RX4D R1CBW -19 (x3)
CW
No CW receptions recorded for this callsign in the last 30 days.
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