JF1FSR — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving JF1FSR, decoded by SO8OO in southeastern Poland. 81 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-21 and 2026-10-16.
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 81 FT8 messages attributed to JF1FSR as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (53%), followed by 80 m (47%). 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 -10 dB.
Overview
Bands
Last attributed message: 2026-10-16 20:54 UTC
Observed FT8 message patterns
- Attributed sample
- 81 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -19 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 33, strong (≥ -8 dB) 34.
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 JF1FSR 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 JF1FSR
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 · 13 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,693 km (approx.)
- Last such locator decoded
- 2026-10-16 20:54 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 | JF1FSR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-16 20:58 | 80m | - / -17 | ON4IQ | +14 / - | 4 | ✓ Closing fragment |
| 10-16 20:54 | 80m | -16 / -17 | ON8DM | +4 / - | 5 | ✓ Closing observed |
| 10-16 20:39 | 80m | - / - | IK5EEA | -7 / - | 3 | Partial capture |
| 10-16 20:37 | 80m | - / -20 | G3NSM | +12 / - | 2 | ✓ Closing fragment |
| 10-16 20:35 | 80m | -20 / -7 | OH5Z | +8 / -7 | 6 | ✓ Full exchange observed |
| 10-13 20:43 | 80m | -12 / -5 | 5B4AMX | -18 / -13 | 4 | ✓ Full exchange observed |
| 10-10 20:36 | 80m | - / -15 | OT7K | +18 / - | 2 | ✓ Closing fragment |
| 10-10 20:27 | 80m | - / -19 | 4Z5AV | -12 / - | 3 | ✓ Closing fragment |
| 10-02 21:03 | 40m | - / - | F5PBG | 0 / - | 2 | Partial capture |
| 10-02 21:00 | 40m | - / - | IS0KNS | -12 / - | 2 | Partial capture |
| 10-02 20:45 | 40m | - / - | PA3KUS | -12 / - | 2 | Partial capture |
| 10-02 20:37 | 40m | - / -17 | LB7ZG | -7 / - | 4 | ✓ Closing fragment |
| 10-02 20:36 | 40m | - / -14 | EG1FAP | -8 / - | 2 | ✓ Closing fragment |
| 10-02 20:30 | 80m | - / -16 | ON6AA | +11 / - | 5 | ✓ Closing fragment |
| 10-02 20:29 | 80m | -16 / -11 | TF4M | +1 / -14 | 3 | Partial capture |
| 09-21 17:47 | 80m | - / -5 | DJ7M | +20 / - | 2 | ✓ Closing fragment |
| 09-04 20:29 | 40m | +1 / - | SP9DPM/P | - / -8 | 3 | Partial capture |
| 09-04 20:25 | 40m | 0 / - | EB3BRC | - / -13 | 4 | ✓ Closing fragment |
| 09-04 20:19 | 40m | -1 / +4 | DK1MCS | 0 / -12 | 5 | ✓ Full exchange observed |
| 09-04 20:17 | 40m | 0 / - | EA7GUK | - / -10 | 3 | ✓ Closing fragment |
| 08-29 22:39 | 20m | - / -12 | EA7DAP | -6 / - | 2 | ✓ Closing fragment |
| 08-29 21:37 | 40m | - / -8 | UR1CCT | -15 / - | 3 | ✓ Closing fragment |
| 08-28 17:24 | 40m | -7 / -16 | EA5N | -4 / -14 | 3 | ✓ Full exchange observed |
| 08-28 17:23 | 40m | -8 / - | LZ2BC | -6 / -14 | 3 | ✓ Closing observed |
| 08-28 17:20 | 40m | -2 / - | RX6DA | -10 / - | 2 | ✓ Closing observed |
| 08-28 17:17 | 40m | - / - | UA3WG | +2 / - | 2 | Partial capture |
| 08-28 17:16 | 40m | - / -7 | UA1RC | 0 / - | 2 | ✓ Closing fragment |
| 08-28 17:15 | 40m | -3 / -18 | R2ASY | -7 / - | 2 | ✓ Closing observed |
| 08-28 17:14 | 40m | -6 / -6 | R2ZCA | -4 / -9 | 9 | ✓ Full exchange observed |
| 08-28 17:14 | 40m | - / - | UB3XCC | -7 / - | 5 | Partial capture |
| 08-28 17:14 | 40m | -4 / - | UY7AM | - / -11 | 2 | ✓ Closing fragment |
| 08-28 17:11 | 40m | -3 / -8 | UA6LIK | 0 / -9 | 4 | ✓ Full exchange observed |
| 08-28 17:11 | 40m | -2 / -3 | UR6QA | +10 / -4 | 6 | ✓ Full exchange observed |
| 08-28 17:11 | 40m | -4 / - | BG4LNW | - / -19 | 2 | ✓ Closing fragment |
| 08-28 17:10 | 40m | - / - | LB7ZG | +4 / - | 4 | Partial capture |
| 08-28 17:10 | 40m | - / +8 | UY7AM | +6 / - | 3 | Partial capture |
| 08-28 17:09 | 40m | -4 / - | UA9CR | -7 / -4 | 3 | ✓ Closing observed |
| 08-28 17:08 | 40m | -3 / -13 | R4PFY | -10 / -8 | 3 | ✓ Full exchange observed |
| 08-28 17:06 | 40m | -7 / -6 | R7DX | +6 / -4 | 7 | ✓ Full exchange observed |
| 08-28 17:06 | 40m | -12 / - | BG7MOM | - / -6 | 3 | ✓ Closing fragment |
| 08-28 17:05 | 40m | - / - | LB7ZG | +1 / - | 4 | Partial capture |
| 08-28 17:05 | 40m | -12 / - | BI2QMT | - / -3 | 2 | ✓ Closing fragment |
| 08-28 17:03 | 40m | -12 / - | ZS1J | - / -10 | 4 | ✓ Closing fragment |
| 08-21 21:53 | 20m | - / -11 | EA7UW | -16 / - | 2 | Partial capture |
| 08-21 20:19 | 80m | - / -20 | RU3T | +3 / - | 9 | Partial capture |
| 08-21 20:19 | 80m | -22 / - | UF4S/P | - / -6 | 4 | Partial capture |
| 08-21 20:15 | 80m | -21 / - | EA1SAL | - / -18 | 2 | Partial capture |
| 08-21 20:10 | 80m | -14 / -12 | UR5KC | +11 / - | 4 | ✓ Closing observed |
| 08-21 20:07 | 80m | - / -16 | R3VA | -8 / - | 2 | Partial capture |
| 08-21 20:05 | 80m | - / - | SV8TCK | -1 / - | 5 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 203715 -22 2175 OH5Z JF1FSR 73 203730 +12 2709 JF1FSR G3NSM -20 (x2) 203900 -8 1000 JF1FSR IK5EEA JN53 (x3) 205415 -16 2319 ON8DM JF1FSR PM95 205430 +11 2318 JF1FSR ON8DM -17 (x4) 205830 +15 2701 JF1FSR ON4IQ JO20 (x4)
UTC dB Audio Message 201015 -11 336 JF1FSR 4J3DJ RR73
UTC dB Audio Message 203845 -14 276 JF1FSR LB7ZG 73 203945 -10 940 JF1FSR DJ0ABM JN48 204430 +6 548 JF1FSR EA2BFJ RR73 204530 -13 767 JF1FSR PA3KUS JO21 204530 -4 1980 JF1FSR F4HSB JN37 204600 -11 767 JF1FSR PA3KUS JO21 204900 -9 2164 JF1FSR EA1AIQ -11 205830 -15 1737 JF1FSR M0CKX IO93 210030 -8 342 JF1FSR IS0KNS JN40 (x2) 210315 -10 341 EA7KGJ JF1FSR 73 210330 +0 340 JF1FSR F5PBG IN78 (x2) 210445 -14 315 T77R JF1FSR PM95 (x2)
UTC dB Audio Message 215315 -18 969 JF1FSR EA7UW -11 (x2) 223915 -8 2009 JF1FSR EA7DAP -12 (x2)
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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