JA4EVN — 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 JA4EVN, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-01 and 2026-10-25.
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 30 FT8 messages attributed to JA4EVN as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 80 m (27%). 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 -12 dB.
Overview
Bands
Last attributed message: 2026-10-25 21:34 UTC
Observed FT8 message patterns
- Attributed sample
- 30 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -12 dB
- Estimated 10th-90th percentile
- -18 to -8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 16, 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 JA4EVN in decoded directed-looking exchanges:
Most frequent locator attributed to JA4EVN
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
- PM75 · 16 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,477 km (approx.)
- Last such locator decoded
- 2026-10-25 21:33 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 | JA4EVN S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-04 22:03 | 80m | - / -2 | 5B4AMM | +6 / - | 2 | ✓ Closing fragment |
| 10-30 20:02 | 160m | - / - | RA3LBW | +12 / - | 4 | Partial capture |
| 10-30 19:58 | 160m | - / - | SV1BLD | +6 / - | 2 | Partial capture |
| 10-30 19:50 | 160m | - / -12 | R7OF | -12 / - | 4 | ✓ Closing fragment |
| 10-30 19:49 | 160m | - / -18 | IW4AOT | 0 / - | 4 | ✓ Closing fragment |
| 10-30 19:47 | 160m | - / -19 | UR4LRG | -2 / - | 2 | ✓ Closing fragment |
| 10-30 19:46 | 160m | - / -17 | SV8DCY | 0 / - | 2 | ✓ Closing fragment |
| 10-30 19:42 | 160m | - / -5 | RN3TT | -8 / - | 4 | Partial capture |
| 10-30 19:28 | 160m | - / -13 | E73DPR | +7 / - | 4 | ✓ Closing fragment |
| 10-25 21:40 | 80m | - / - | R6NA | +7 / - | 13 | Partial capture |
| 10-25 21:40 | 80m | - / -18 | RC9WC | -5 / - | 2 | Partial capture |
| 10-25 21:39 | 80m | - / - | DM2SP | +1 / - | 12 | Partial capture |
| 10-25 21:35 | 80m | - / - | R6FX | -11 / - | 2 | Partial capture |
| 10-25 21:33 | 80m | -16 / - | US1VS | +4 / -23 | 4 | ✓ Closing observed |
| 10-25 21:30 | 80m | -16 / - | UN7EAX | - / -13 | 2 | ✓ Closing fragment |
| 10-25 21:29 | 80m | - / -15 | RC9WC | -8 / - | 4 | Partial capture |
| 10-25 21:29 | 80m | -15 / -4 | UR4LBG | -1 / -12 | 9 | ✓ Full exchange observed |
| 10-25 21:26 | 80m | - / - | DF2GH | +13 / - | 3 | Partial capture |
| 10-25 21:26 | 80m | - / - | UX0ZAB | 0 / - | 3 | Partial capture |
| 10-25 21:05 | 160m | - / -23 | DM2SP | -11 / - | 3 | Partial capture |
| 10-13 22:40 | 40m | - / -11 | UN0GY | -7 / - | 2 | ✓ Closing fragment |
| 10-13 22:36 | 40m | - / -10 | UN3P | -24 / - | 2 | ✓ Closing fragment |
| 09-22 21:05 | 80m | - / -23 | 9A2CD | +16 / - | 7 | Partial capture |
| 09-21 21:16 | 40m | - / - | EA9AR | -1 / - | 2 | Partial capture |
| 09-21 21:14 | 40m | - / - | F4BYA | +3 / - | 3 | Partial capture |
| 09-21 21:14 | 40m | - / - | HB9ELE | +16 / - | 5 | Partial capture |
| 09-21 21:13 | 40m | - / -7 | UT9NA | -14 / - | 2 | ✓ Closing fragment |
| 09-21 21:12 | 40m | - / - | RD3FY | +4 / - | 4 | Partial capture |
| 09-21 21:00 | 80m | - / -19 | SV1DKR | -4 / - | 4 | Partial capture |
| 09-21 20:59 | 80m | - / -10 | LX1JH | +10 / - | 2 | ✓ Closing fragment |
| 09-20 22:13 | 40m | - / -16 | HA8BE | -23 / - | 2 | ✓ Closing fragment |
| 09-19 21:53 | 40m | - / -16 | EX7CQ | +1 / - | 2 | Partial capture |
| 09-19 21:36 | 40m | - / - | PD0LBY | -12 / - | 2 | Partial capture |
| 09-19 21:34 | 40m | - / +4 | PD0IFI | +11 / - | 7 | Partial capture |
| 09-19 21:33 | 40m | - / - | F5NBU | +1 / - | 4 | Partial capture |
| 09-19 21:32 | 40m | -10 / -10 | CN8NS | -10 / -14 | 3 | ✓ Full exchange observed |
| 09-19 21:30 | 40m | - / - | F5NBU | +3 / - | 2 | Partial capture |
| 09-19 21:30 | 40m | - / - | F5PBG | -6 / - | 2 | Partial capture |
| 09-19 21:29 | 40m | - / -19 | DB8WK | +12 / - | 3 | ✓ Closing fragment |
| 09-19 21:28 | 40m | - / - | IU4PPL | -8 / - | 2 | Partial capture |
| 09-19 21:27 | 40m | - / -17 | G1CEC | -6 / - | 5 | ✓ Closing fragment |
| 09-01 20:49 | 40m | -14 / - | RI1FJL | - / -23 | 10 | Partial capture |
| 09-01 20:41 | 40m | -8 / - | RI1FJL | - / -19 | 8 | Partial capture |
| 09-01 20:32 | 40m | -16 / - | RI1FJL | - / - | 3 | Partial capture |
| 08-28 21:31 | 40m | - / -12 | Z34K | -4 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 214300 -5 981 JA4EVN DM2SP JO62 214330 +9 2837 JA4EVN R6NA KN97 214330 -4 981 JA4EVN DM2SP JO62 214400 +1 2837 JA4EVN R6NA KN97 214400 -8 982 JA4EVN DM2SP JO62 (x2) 214530 +7 2917 JA4EVN R6NA KN97 214530 -9 981 JA4EVN DM2SP JO62 214600 +9 2917 JA4EVN R6NA KN97 (x5) 220330 +8 2309 JA4EVN 5B4AMM -02 (x2)
UTC dB Audio Message 194930 +3 2200 JA4EVN IW4AOT -18 195000 -17 2431 JA4EVN R7OF KN87 195000 -1 2200 JA4EVN IW4AOT RR73 195030 -9 2430 JA4EVN R7OF KN87 195030 -4 2200 JA4EVN IW4AOT RR73 195130 -10 2430 JA4EVN R7OF R-12 (x2) 195300 +16 2844 JA4EVN IW0RGN -08 195800 +7 2448 JA4EVN SV1BLD KM17 (x2) 200245 +11 2922 JA4EVN RA3LBW KO54 (x4) 210515 -22 1296 JA4EVN EA1EVS IN73
UTC dB Audio Message 211430 -5 1889 JA4EVN F5PBG IN78 211430 +1 2706 JA4EVN F4BYA JN19 211500 +16 695 JA4EVN HB9ELE JN47 211500 +3 2706 JA4EVN F4BYA JN19 211530 +16 695 JA4EVN HB9ELE JN47 211530 +6 2706 JA4EVN F4BYA JN19 211600 +19 695 JA4EVN HB9ELE JN47 211600 -1 296 JA4EVN EA9AR IM85 211630 +15 695 JA4EVN HB9ELE JN47 211630 -1 296 JA4EVN EA9AR IM85 223630 -24 1828 JA4EVN UN3P -10 (x2) 224030 -9 2408 JA4EVN UN0GY -11 (x2) 224830 -11 2537 JA4EVN DL5DQZ -19
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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