JK1ATM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JK1ATM, decoded by SO8OO in southeastern Poland. 47 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-06-19.
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 47 FT8 messages attributed to JK1ATM as the transmitting token by decoded message structure across 4 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 -18 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 47 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -18 dB
- Estimated 10th-90th percentile
- -24 to -8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 27, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 6.
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 JK1ATM in decoded directed-looking exchanges:
Most frequent locator attributed to JK1ATM
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 · 26 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,693 km (approx.)
- Last such locator decoded
- 2026-06-19 19:18 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 | JK1ATM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-31 10:31 | 20m | - / - | RA3FH | -5 / - | 4 | Partial capture |
| 08-30 21:46 | 20m | - / -7 | DM4GG | +3 / - | 3 | ✓ Closing fragment |
| 08-26 20:22 | 20m | - / -18 | EA4LX/P | -6 / - | 3 | Partial capture |
| 08-17 19:09 | 20m | - / -16 | ON4IQ | +17 / - | 3 | ✓ Closing fragment |
| 08-17 18:49 | 40m | - / -16 | R5AV | -14 / - | 3 | ✓ Closing fragment |
| 08-16 19:35 | 40m | - / -16 | 9A5E | -4 / - | 3 | ✓ Closing fragment |
| 08-15 20:11 | 40m | - / -17 | HA7XL | 0 / - | 2 | ✓ Closing fragment |
| 08-15 20:01 | 40m | - / -15 | RX3ASQ | -14 / - | 2 | ✓ Closing fragment |
| 08-14 20:30 | 20m | - / -20 | DL3JJ | -3 / - | 6 | ✓ Closing fragment |
| 08-10 19:18 | 20m | - / -18 | RV3ZK | +12 / - | 3 | ✓ Closing fragment |
| 08-10 19:11 | 20m | - / -16 | EI4KF | +1 / - | 2 | ✓ Closing fragment |
| 08-10 19:07 | 20m | - / -13 | 9A5E | -2 / - | 2 | ✓ Closing fragment |
| 08-09 08:13 | 20m | - / -10 | DK4FP | -9 / - | 2 | Partial capture |
| 08-06 19:57 | 20m | - / - | ON7NQ | -5 / - | 2 | Partial capture |
| 08-05 17:34 | 20m | - / -8 | IK0QKN | -14 / - | 5 | ✓ Closing fragment |
| 08-03 19:10 | 40m | - / -14 | UR1CCT | +3 / - | 3 | ✓ Closing fragment |
| 08-02 19:57 | 40m | - / -10 | RX7O | -6 / - | 2 | Partial capture |
| 08-02 19:41 | 40m | - / - | UF5F | -10 / - | 4 | Partial capture |
| 08-01 20:05 | 20m | - / - | F4HEA | -9 / - | 3 | Partial capture |
| 08-01 20:04 | 20m | - / -18 | <...> | -4 / - | 2 | Partial capture |
| 08-01 20:03 | 20m | - / -18 | F/G7NUT | 0 / - | 3 | Partial capture |
| 08-01 19:54 | 20m | - / -9 | DL1DGS | -2 / - | 4 | ✓ Closing fragment |
| 08-01 19:50 | 20m | - / -22 | RT6Z | +10 / - | 4 | ✓ Closing fragment |
| 08-01 19:44 | 20m | - / - | DL1MKP | -11 / - | 2 | Partial capture |
| 08-01 19:39 | 20m | - / -17 | IU2NBZ | -17 / - | 3 | Partial capture |
| 07-28 18:32 | 20m | - / -19 | DL7VGU | 0 / - | 3 | Partial capture |
| 07-28 18:28 | 20m | - / -19 | DL6KA | -2 / - | 2 | ✓ Closing fragment |
| 07-28 17:57 | 20m | - / - | DK7UY | 0 / - | 3 | Partial capture |
| 07-28 17:55 | 20m | - / - | RA6OY | -2 / - | 2 | Partial capture |
| 07-28 17:38 | 20m | - / -14 | DF0KK | -9 / - | 3 | ✓ Closing fragment |
| 07-28 17:35 | 20m | - / -18 | ON8PIE | -6 / - | 2 | ✓ Closing fragment |
| 07-27 20:28 | 20m | - / - | LZ2EW | -8 / - | 9 | Partial capture |
| 07-27 20:27 | 20m | - / -18 | I0KNQ | -4 / - | 6 | ✓ Closing fragment |
| 07-27 19:54 | 20m | - / -18 | TA3MPK | -13 / - | 5 | ✓ Closing fragment |
| 07-26 21:01 | 20m | - / -19 | IW2NEF | -9 / - | 3 | ✓ Closing fragment |
| 07-26 20:39 | 20m | - / - | RA6OY | -3 / - | 4 | Partial capture |
| 07-24 21:23 | 20m | - / -20 | IV3DSG | +6 / - | 3 | ✓ Closing fragment |
| 07-23 18:24 | 20m | - / +6 | RU3QR | -15 / - | 3 | Partial capture |
| 07-22 20:32 | 20m | - / -14 | IZ4VSD | -12 / - | 3 | ✓ Closing fragment |
| 07-21 18:14 | 40m | - / -19 | UA4FKT | -11 / - | 2 | Partial capture |
| 07-21 17:14 | 20m | - / - | YO9HB | -12 / - | 2 | ✓ Closing fragment |
| 07-20 19:00 | 40m | - / -15 | UA3GT | -20 / - | 2 | Partial capture |
| 07-20 18:34 | 20m | - / - | F5HNQ | -5 / - | 3 | ✓ Closing fragment |
| 07-20 18:31 | 20m | - / -17 | YO9CX | -16 / - | 2 | Partial capture |
| 07-19 18:04 | 20m | - / -23 | PD8RUK | -16 / - | 9 | ✓ Closing fragment |
| 07-19 18:02 | 20m | - / -18 | US0QV | -11 / - | 3 | ✓ Closing fragment |
| 07-19 17:46 | 20m | - / -12 | OE3EHS | +4 / - | 2 | Partial capture |
| 07-19 17:36 | 20m | - / -11 | EA1B | -7 / - | 2 | ✓ Closing fragment |
| 07-18 19:42 | 40m | - / -19 | IQ4JO | -4 / - | 10 | Partial capture |
| 07-17 21:06 | 20m | - / -18 | 9A2RD | +17 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 203300 -2 1220 JK1ATM DL3JJ R-20 (x2) 190930 +14 2660 JK1ATM ON4IQ JO20 (x3) 202215 -6 1157 JK1ATM EA4LX/P -18 (x3) 214600 +4 2495 JK1ATM DM4GG JO40 (x3) 103130 -7 2664 JK1ATM RA3FH KO84 (x4)
UTC dB Audio Message 191000 +3 1118 JK1ATM UR1CCT KN69 (x3) 200100 -12 1145 JK1ATM RX3ASQ R-15 (x2) 200700 +0 1729 JK1ATM HA7XL JN97 (x3) 202230 -18 1730 JK1ATM US2YW KN28 193500 -4 2169 JK1ATM 9A5E JN75 (x3) 184900 -17 1223 JK1ATM R5AV -16 (x3)
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