JH1HRJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JH1HRJ, decoded by SO8OO in southeastern Poland. 40 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-06-20.
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 40 FT8 messages attributed to JH1HRJ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (83%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (78%); the estimated median was -12 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 40 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -12 dB
- Estimated 10th-90th percentile
- -15 to -7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 8.
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 JH1HRJ in decoded directed-looking exchanges:
Most frequent locator attributed to JH1HRJ
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
- PM95 · 16 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,693 km (approx.)
- Last such locator decoded
- 2026-06-20 16:31 UTC
Other locator fields attributed to this token: QM05 (7).
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 | JH1HRJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-05 17:12 | 40m | - / -20 | OZ7KJ/P | +4 / - | 2 | ✓ Closing fragment |
| 09-05 17:08 | 40m | - / - | UR4QWW | -2 / - | 4 | Partial capture |
| 09-05 17:07 | 40m | - / -11 | EK/RX3DPK | +2 / - | 2 | ✓ Closing fragment |
| 09-05 17:07 | 40m | - / - | R7DX | 0 / - | 2 | Partial capture |
| 09-05 17:07 | 40m | - / -10 | R1QF | -6 / - | 2 | Partial capture |
| 08-27 11:21 | 10m | - / -10 | ON4IQ | +8 / - | 2 | ✓ Closing fragment |
| 08-27 10:45 | 10m | - / -6 | EA3AKY | -14 / - | 2 | ✓ Closing fragment |
| 08-26 12:53 | 20m | - / - | KC1TRF | -20 / - | 8 | Partial capture |
| 08-15 19:57 | 20m | - / - | G5TV | -4 / - | 2 | Partial capture |
| 08-02 19:09 | 20m | - / -17 | SV5BYP | -7 / - | 3 | ✓ Closing fragment |
| 07-22 16:09 | 40m | - / - | R7DX | -16 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 160945 -18 1877 JH1HRJ R7DX KN84 (x2) 170700 -10 2339 JH1HRJ R1QF -10 170730 -1 1472 JH1HRJ R7DX KN84 170730 +4 2734 JH1HRJ EK/RX3DPK -11 170800 +0 1472 JH1HRJ R7DX KN84 170800 +0 2734 <JH1HRJ> EK/RX3DPK RR73 170830 +1 1576 JH1HRJ UR4QWW KN77 170830 -2 2339 JH1HRJ R1QF -10 170900 -4 1575 JH1HRJ UR4QWW KN77 (x3) 171030 -4 2259 JH1HRJ SP6FME R-15 171245 +6 2417 JH1HRJ OZ7KJ/P -20 (x2)
UTC dB Audio Message 104545 -12 1222 JH1HRJ EA3AKY -06 (x2) 104645 -18 2343 JH1HRJ IQ4JO -09 104715 -10 1841 JH1HRJ F4FSY -20 112100 +8 2509 JH1HRJ ON4IQ -10 (x2) 112230 -16 1968 JH1HRJ F4FSY -11 (x2) 112915 -14 2461 JH1HRJ DL2RUG JN58 113345 -17 1547 JH1HRJ F4LZZ JN09 113415 -18 1991 JH1HRJ DN9OPA JN38
UTC dB Audio Message 190945 -7 1770 JH1HRJ SV5BYP -17 (x3) 132100 +3 2589 JH1HRJ F5HNQ IN98 195700 -3 1628 JH1HRJ G5TV IO93 (x3) 125300 -20 1625 JH1HRJ KC1TRF FN54 (x8)
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