HB9EBM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving HB9EBM, decoded by SO8OO in southeastern Poland. 442 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-15.
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 442 FT8 messages attributed to HB9EBM as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (54%), followed by 20 m (22%) and 80 m (20%). Most decodes (76%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (96%); the estimated median was +6.6 dB.
Overview
Bands
Last attributed message: 2026-09-15 21:35 UTC
Observed FT8 message patterns
- Attributed sample
- 442 messages
- Active dates
- 29 UTC dates
- Estimated median S/N
- +6.6 dB
- Estimated 10th-90th percentile
- -4 to +18 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 424.
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 HB9EBM 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 HB9EBM
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
- JN37 · 304 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,116 km (approx.)
- Last such locator decoded
- 2026-09-15 21:35 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 | HB9EBM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-15 21:29 | 40m | +1 / - | PZ5RA | - / - | 6 | Partial capture |
| 09-15 21:24 | 40m | +2 / - | PZ5RA | - / - | 3 | Partial capture |
| 09-13 21:53 | 40m | +2 / - | DU3LA | - / - | 5 | Partial capture |
| 09-13 21:19 | 40m | -7 / - | D2ACE | - / -15 | 4 | ✓ Closing fragment |
| 09-10 08:50 | 40m | -2 / +1 | 9A7BB | -4 / -2 | 4 | ✓ Full exchange observed |
| 09-10 08:43 | 40m | - / -6 | OE1HLB | -10 / - | 2 | ✓ Closing fragment |
| 09-10 08:38 | 40m | -4 / -2 | ON4AOI | -4 / +3 | 4 | ✓ Full exchange observed |
| 09-08 06:32 | 40m | -1 / - | J38DX | - / -17 | 8 | ✓ Closing fragment |
| 09-08 06:08 | 40m | +9 / - | J38DX | - / - | 5 | Partial capture |
| 09-08 06:06 | 40m | +15 / - | AA4JM | - / -16 | 2 | ✓ Closing fragment |
| 09-08 06:02 | 40m | +13 / - | J38DX | - / - | 7 | Partial capture |
| 09-08 05:53 | 40m | +10 / - | J38DX | - / - | 14 | Partial capture |
| 09-07 21:21 | 40m | +15 / -15 | BA4II | -16 / -17 | 6 | ✓ Full exchange observed |
| 09-07 21:21 | 40m | +20 / - | EA8UP | - / - | 2 | Partial capture |
| 09-07 21:09 | 40m | +12 / - | D2ACE | - / - | 4 | Partial capture |
| 09-07 21:06 | 40m | +18 / - | DK8HC | - / -4 | 2 | ✓ Closing fragment |
| 09-07 21:02 | 40m | +12 / - | JA4FKX | -2 / -12 | 11 | ✓ Closing observed |
| 09-07 21:00 | 40m | +16 / - | D2ACE | - / - | 4 | Partial capture |
| 09-07 20:50 | 40m | +12 / - | D44TWO | - / - | 7 | Partial capture |
| 09-07 20:41 | 40m | +11 / - | D44TWO | - / - | 8 | Partial capture |
| 09-05 23:17 | 40m | +10 / - | EG9FMS | - / - | 2 | Partial capture |
| 09-05 23:16 | 40m | +18 / - | HS7WMU | - / - | 2 | Partial capture |
| 09-05 23:11 | 40m | +12 / - | D44TWO | - / - | 5 | Partial capture |
| 09-05 22:59 | 40m | +15 / - | VJ6X | - / -17 | 3 | ✓ Closing fragment |
| 09-05 22:56 | 40m | +13 / - | D44TWO | - / - | 4 | Partial capture |
| 09-05 21:29 | 40m | +15 / - | PD0IFI | - / +6 | 2 | ✓ Closing fragment |
| 09-05 21:27 | 40m | +12 / - | D44TWO | - / - | 9 | Partial capture |
| 09-04 23:46 | 80m | -5 / - | ZS6WAB | - / - | 2 | Partial capture |
| 09-03 23:10 | 80m | +3 / - | 9V1YC | - / -19 | 2 | Partial capture |
| 09-03 23:07 | 80m | +5 / - | <...> | - / - | 2 | Partial capture |
| 09-03 21:38 | 40m | +6 / - | D44TWO | - / - | 3 | Partial capture |
| 09-03 21:31 | 40m | +4 / - | D44TWO | - / - | 4 | Partial capture |
| 08-28 21:56 | 80m | +2 / - | VK6JX | - / - | 2 | Partial capture |
| 08-28 21:52 | 80m | +6 / - | VK6JX | - / - | 2 | Partial capture |
| 08-28 21:46 | 80m | +6 / - | VK6JX | - / - | 6 | Partial capture |
| 08-27 17:59 | 80m | 0 / -8 | F4FTV | -11 / - | 3 | ✓ Closing observed |
| 08-27 17:58 | 80m | +2 / - | 9K2HN | - / - | 2 | Partial capture |
| 08-21 01:10 | 80m | +5 / - | LU3CQ | - / -21 | 6 | ✓ Closing fragment |
| 08-19 20:24 | 40m | -3 / - | 5A1AL | - / -16 | 5 | ✓ Closing fragment |
| 08-19 20:20 | 40m | +3 / - | G1BJC | - / +1 | 5 | ✓ Closing fragment |
| 08-19 20:13 | 40m | +5 / - | 5A1AL | - / - | 11 | Partial capture |
| 08-19 19:58 | 40m | +4 / - | 5A1AL | - / - | 4 | Partial capture |
| 08-19 19:49 | 40m | +5 / - | 5A1AL | - / - | 11 | Partial capture |
| 08-19 19:39 | 40m | +6 / - | 5A1AL | - / - | 3 | Partial capture |
| 08-19 19:30 | 40m | +1 / - | 5A1AL | - / - | 3 | Partial capture |
| 08-19 06:54 | 40m | 0 / - | PW8BR | - / - | 2 | Partial capture |
| 08-19 06:52 | 40m | -8 / - | F4FSY | - / -18 | 2 | ✓ Closing fragment |
| 08-19 06:49 | 40m | -8 / - | PV8AJ | - / -14 | 2 | ✓ Closing fragment |
| 08-19 06:45 | 40m | -10 / - | ZL4SY | - / - | 2 | Partial capture |
| 08-18 08:35 | 10m | +12 / - | <...> | - / -12 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 215345 -2 2615 DU3LA HB9EBM JN37 (x5) 212015 +7 2808 PZ5RA HB9EBM JN37 (x10)
UTC dB Audio Message 214645 +9 2926 VK6JX HB9EBM JN37 (x9) 230730 +5 2772 <...> HB9EBM JN37 (x2) 231015 +3 2772 9V1YC HB9EBM R-19 (x2) 234600 -5 2605 ZS6WAB HB9EBM JN37 (x2)
UTC dB Audio Message 132200 -4 2089 HB9EBM DO7DE JN49 132215 -3 2938 IZ8PPI HB9EBM R-06 132315 -3 2937 F5SDD HB9EBM -03 (x2) 132445 +1 2937 M0SCK HB9EBM RR73 132500 -12 2380 HB9EBM DO9BAU JO62 132515 +3 2936 DO9BAU HB9EBM +09 (x2) 081500 -11 2637 HB9EBM IK4IDF R-08 081745 +2 2929 UR9QQ HB9EBM -05 (x2) 083500 +14 2929 <...> HB9EBM JN37 (x3) 102730 -9 431 HB9EBM DF7EF JO30
UTC dB Audio Message 191800 +21 2861 OK2VCR HB9EBM RR73 191900 +20 2860 JE7BKV HB9EBM RR73 202215 -11 2583 BA7SAY HB9EBM -14 202545 -11 2582 BA8BLK HB9EBM R-16 203045 -2 2582 BG7BVI HB9EBM R-14 (x2) 203200 -1 2582 HB9EBM M7LYG IO93 165645 +11 2781 <...> HB9EBM JN37 (x8)
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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