JH1XEF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JH1XEF, decoded by SO8OO in southeastern Poland. 52 FT8 messages attributed to this token as transmitter, on 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-27.
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 52 FT8 messages attributed to JH1XEF as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 52 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -14 dB
- Estimated 10th-90th percentile
- -19 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 5.
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 JH1XEF in decoded directed-looking exchanges:
Most frequent locator attributed to JH1XEF
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 · 32 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,693 km (approx.)
- Last such locator decoded
- 2026-08-23 21:47 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 | JH1XEF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 21:30 | 40m | - / -20 | R3XBS | +2 / - | 2 | ✓ Closing fragment |
| 09-12 20:51 | 40m | - / -15 | OH5KT | -5 / - | 2 | ✓ Closing fragment |
| 09-03 20:28 | 40m | - / - | R3KGN | 0 / - | 2 | ✓ Closing fragment |
| 09-03 20:25 | 40m | - / -16 | LA1KUA | +9 / - | 3 | ✓ Closing fragment |
| 09-03 20:22 | 40m | - / -11 | I2VGW | +8 / - | 4 | ✓ Closing fragment |
| 09-03 20:15 | 40m | - / -15 | TA3NK | -9 / - | 6 | ✓ Closing fragment |
| 09-03 20:15 | 40m | - / - | UT7HX | +14 / - | 2 | ✓ Closing fragment |
| 09-03 20:13 | 40m | - / -18 | LY3CY | +12 / - | 3 | ✓ Closing fragment |
| 09-03 20:12 | 40m | - / - | IK2WRI | +6 / - | 2 | Partial capture |
| 09-03 20:08 | 40m | - / - | OK1UG | +6 / - | 3 | Partial capture |
| 09-03 20:08 | 40m | - / -13 | ON4IQ | +17 / - | 3 | ✓ Closing fragment |
| 09-03 20:04 | 40m | - / -15 | SP5LST | -14 / - | 3 | ✓ Closing fragment |
| 09-03 19:48 | 40m | - / -19 | II7MGML | -2 / - | 2 | Partial capture |
| 08-26 22:01 | 20m | - / -23 | 9A3TY | -11 / - | 2 | ✓ Closing fragment |
| 08-24 22:20 | 20m | - / -2 | DR800WE | +6 / - | 2 | Partial capture |
| 08-23 21:46 | 20m | -11 / - | GW0ARK | +6 / - | 2 | ✓ Closing observed |
| 08-23 21:44 | 20m | - / -10 | EA5W | -6 / - | 3 | ✓ Closing fragment |
| 08-23 21:40 | 20m | -8 / - | LZ1EV | - / - | 2 | Partial capture |
| 08-23 21:12 | 40m | - / -18 | YO4NT | +6 / - | 2 | ✓ Closing fragment |
| 08-21 21:43 | 20m | - / -16 | ON3KJU | -6 / - | 2 | ✓ Closing fragment |
| 08-17 21:46 | 20m | - / -23 | YO4ATW | -4 / - | 2 | ✓ Closing fragment |
| 08-14 21:59 | 20m | - / -18 | SV5BYP | -8 / - | 5 | Partial capture |
| 08-14 21:56 | 20m | - / -13 | F6EKI | -19 / - | 5 | ✓ Closing fragment |
| 08-11 22:29 | 20m | - / -10 | HB9HBY | -2 / - | 2 | ✓ Closing fragment |
| 08-11 22:24 | 20m | - / -18 | EA1N | +6 / - | 2 | ✓ Closing fragment |
| 08-11 21:45 | 20m | - / -12 | CR5VP | -10 / - | 2 | ✓ Closing fragment |
| 08-11 21:36 | 20m | - / -13 | IZ2CPO/QRP | -20 / - | 2 | ✓ Closing fragment |
| 08-09 21:37 | 20m | - / -9 | IN3VVK | +10 / - | 2 | ✓ Closing fragment |
| 08-06 21:48 | 20m | - / -16 | DL3NA | -7 / - | 4 | ✓ Closing fragment |
| 08-05 21:51 | 20m | - / -18 | CT1EEX | -10 / - | 2 | ✓ Closing fragment |
| 07-29 21:42 | 20m | - / -25 | M9TAM | 0 / - | 3 | ✓ Closing fragment |
| 07-22 21:51 | 20m | - / -21 | CT1EDA | -4 / - | 6 | Partial capture |
| 07-16 21:47 | 20m | - / -5 | IS0AEL | +4 / - | 2 | ✓ Closing fragment |
| 07-15 21:06 | 20m | - / -24 | IU0ERZ | -12 / - | 2 | Partial capture |
| 07-15 21:00 | 20m | - / -5 | UR4QWW | -8 / - | 2 | ✓ Closing fragment |
| 07-13 21:28 | 20m | - / -12 | IT9EJW | -18 / - | 2 | ✓ Closing fragment |
| 07-12 12:53 | 20m | - / -15 | ES2AJ | -20 / - | 2 | Partial capture |
| 07-11 22:26 | 20m | - / -15 | IK6VXF | -20 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 201900 +1 743 JH1XEF IK2WRI JN45 202230 +7 240 JH1XEF I2VGW JN45 (x4) 202500 +0 1519 JH1XEF R3KGN KO90 202500 +11 237 JH1XEF LA1KUA JP50 (x3) 202800 +3 1519 JH1XEF R3KGN RR73 (x2) 205130 +0 2604 JH1XEF OH5KT -15 (x2) 213000 +0 1276 JH1XEF R3XBS R-20 (x2)
UTC dB Audio Message 203300 -10 2577 JH1XEF V51WH RR73 202500 -2 739 JH1XEF TA3GO -19
UTC dB Audio Message 214045 -9 440 LZ1EV JH1XEF PM95 (x2) 214400 -9 440 ER3BN JH1XEF 73 214415 -7 1812 JH1XEF EA5W IM97 (x3) 214615 +6 2120 JH1XEF GW0ARK RR73 214630 -11 440 GW0ARK JH1XEF 73 214700 -4 440 F4HTA JH1XEF PM95 222015 +2 2902 JH1XEF DR800WE -02 (x3) 220115 -11 1914 JH1XEF 9A3TY -23 (x2) 222945 -21 1770 DL7JLC JH1XEF R-16
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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