RX4D — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RX4D, decoded by SO8OO in southeastern Poland. 10 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-18.
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 10 FT8 messages attributed to RX4D as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (90%), followed by 40 m (10%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-07-18 05:58 UTC
Observed FT8 message patterns
- Attributed sample
- 10 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -18 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 0.
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:
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 |
|---|---|---|---|---|---|---|
| 07-18 05:57 | 10m | -10 / -14 | SV2CLJ | -7 / -14 | 6 | ✓ Full exchange observed |
| 07-18 05:52 | 10m | -20 / - | EW4DX | - / - | 2 | ✓ Closing fragment |
| 07-18 05:43 | 10m | -14 / - | OM8FR | - / -8 | 2 | ✓ Closing fragment |
| 07-18 05:28 | 20m | - / -17 | R6FX | -20 / - | 2 | ✓ Closing fragment |
| 07-18 05:24 | 20m | - / -11 | YO4NF | 0 / - | 2 | Partial capture |
| 07-18 04:53 | 40m | - / 0 | R2SN | -12 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 054330 -14 995 OM8FR RX4D -08 (x2) 054730 -20 1872 BG0AYW RX4D -10 055200 -21 1614 EW4DX RX4D RR73 (x2) 055400 -15 1023 BG8HNC RX4D -13 055715 -18 2184 UA9MKA RX4D RR73 055730 -11 737 RX4D SV2CLJ KN10 055745 -10 737 SV2CLJ RX4D -14 055800 -2 736 RX4D SV2CLJ KN10 055815 -9 737 SV2CLJ RX4D -20 055830 -6 736 RX4D SV2CLJ R-14 (x2)
UTC dB Audio Message 052400 +0 1056 RX4D YO4NF -11 (x2) 052815 -23 1598 RX4D R6FX R-17 (x2)
UTC dB Audio Message 042945 -22 1459 R6AAF RX4D 73 045330 -8 2438 RX4D R2SN +00 (x2)
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