HB9CFU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving HB9CFU, decoded by SO8OO in southeastern Poland. 44 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-07-23.
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 44 FT8 messages attributed to HB9CFU as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (75%), followed by 10 m (25%). Several six-hour UTC windows tied for the largest share (50%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-07-23 11:00 UTC
Observed FT8 message patterns
- Attributed sample
- 44 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -14 to +6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 32.
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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with HB9CFU 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 HB9CFU
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
- JN46 · 32 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,020 km (approx.)
- Last such locator decoded
- 2026-07-23 11:00 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 | HB9CFU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-14 16:25 | 20m | -24 / -15 | 7Z1BM | -24 / -13 | 2 | Partial capture |
| 07-14 16:10 | 20m | -8 / - | IS0CDO | - / +3 | 3 | Partial capture |
| 07-06 15:30 | 20m | -14 / - | CN2DX | - / - | 4 | Partial capture |
| 06-30 08:51 | 10m | -5 / - | YB7WW | - / - | 6 | Partial capture |
| 06-30 08:47 | 10m | -6 / -13 | UN0GY | -11 / -16 | 7 | ✓ Full exchange observed |
| 06-30 07:42 | 20m | +6 / +3 | PD5MVH | 0 / -4 | 5 | ✓ Full exchange observed |
| 06-26 17:45 | 20m | +7 / - | BA7SAY | - / -12 | 3 | ✓ Closing fragment |
| 06-26 17:43 | 20m | -5 / -10 | G4YLJ | -10 / -3 | 6 | ✓ Full exchange observed |
| 06-26 17:41 | 20m | -3 / - | BG2ATH | - / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 074230 +0 2519 HB9CFU PD5MVH +03 074245 +6 2519 PD5MVH HB9CFU R-04 074300 +0 2519 HB9CFU PD5MVH RR73 074315 +3 2520 PD5MVH HB9CFU 73 153045 -14 1781 CN2DX HB9CFU JN46 (x4) 153415 -16 1558 BG5CNL HB9CFU JN46 161045 -2 2540 IS0CDO HB9CFU R+03 (x3) 162530 -24 1856 7Z1BM HB9CFU R-13 162615 -24 1856 HB9CFU 7Z1BM -15 110045 -16 1735 A71CT HB9CFU JN46
UTC dB Audio Message 084700 -6 2246 YB7WW HB9CFU JN46 084730 -7 2507 UN0GY HB9CFU JN46 084745 -11 2507 HB9CFU UN0GY -13 084800 -8 2507 UN0GY HB9CFU JN46 084815 -13 2507 HB9CFU UN0GY -13 084830 -1 2507 UN0GY HB9CFU R-16 084845 -10 2507 HB9CFU UN0GY RR73 084900 -9 2507 UN0GY HB9CFU 73 085130 -10 2240 YB7WW HB9CFU JN46 (x6)
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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