RA4HBB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RA4HBB, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-08-28.
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 RA4HBB 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 (100%). In this small sample, the estimated median decoder S/N was -3 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 28 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -3 dB
- Estimated 10th-90th percentile
- -12 to +7 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 20.
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 RA4HBB in decoded directed-looking exchanges:
Most frequent locator attributed to RA4HBB
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
- LO53 · 12 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,036 km (approx.)
- Last such locator decoded
- 2026-06-20 07:09 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 | RA4HBB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-28 11:06 | 20m | -21 / -15 | DD5JC | -3 / -19 | 4 | Partial capture |
| 08-28 10:58 | 20m | - / -15 | PD0PMF | -8 / - | 2 | ✓ Closing fragment |
| 07-15 05:06 | 20m | - / -19 | RK6J | -22 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 050615 -22 2154 RA4HBB RK6J -19 050645 -17 2400 RA4HBB RU3DNN KO96 050645 -21 2154 RA4HBB RK6J -19 105800 -6 679 RA4HBB PD0PMF -15 (x2) 110645 -10 1914 RA4HBB DD5JC -15 (x2) 110730 -21 1915 DD5JC RA4HBB R-19 110745 -1 1914 RA4HBB DD5JC R-15
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee