KB1FJC — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving KB1FJC, decoded by SO8OO in southeastern Poland. 626 FT8 messages attributed to this token as transmitter, on 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-08-29.
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 626 FT8 messages attributed to KB1FJC as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (95%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 626 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -19 to -6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 121, moderate (-15 to -9 dB) 339, strong (≥ -8 dB) 166.
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 KB1FJC 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 KB1FJC
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
- FN42 · 347 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 6,716 km (approx.)
- Last such locator decoded
- 2026-08-29 00:58 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 | KB1FJC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-09 02:23 | 40m | - / - | F5PBG | +4 / - | 4 | Partial capture |
| 09-09 02:06 | 40m | - / - | F5PBG | +1 / - | 2 | Partial capture |
| 08-31 02:01 | 20m | - / -10 | 5Z4VJ | -8 / - | 3 | ✓ Closing fragment |
| 08-29 00:59 | 20m | -19 / - | WD8IOU | - / -2 | 3 | Partial capture |
| 08-28 23:41 | 20m | -12 / - | KB8SW | - / +8 | 2 | ✓ Closing fragment |
| 08-28 23:40 | 20m | -10 / - | 9A2TN | - / -6 | 2 | ✓ Closing fragment |
| 08-28 23:36 | 20m | -10 / - | KE8ST | - / - | 2 | ✓ Closing fragment |
| 08-28 23:33 | 20m | -13 / - | KR4HBQ | - / -16 | 3 | ✓ Closing fragment |
| 08-28 23:26 | 20m | -12 / - | PD0IFI | -18 / -7 | 3 | ✓ Closing observed |
| 08-28 23:24 | 20m | -11 / - | KQ4HWF | - / -3 | 3 | ✓ Closing fragment |
| 08-28 23:22 | 20m | -10 / - | KI4YGV | - / +7 | 2 | ✓ Closing fragment |
| 08-28 23:06 | 20m | -19 / -12 | EA7LHN | -10 / -18 | 6 | ✓ Full exchange observed |
| 08-28 22:59 | 20m | -16 / -1 | DK2SW | -18 / -13 | 4 | ✓ Full exchange observed |
| 08-28 22:54 | 20m | -16 / - | G4SRT | - / -4 | 2 | ✓ Closing fragment |
| 08-28 22:40 | 20m | - / -10 | F5RRS | 0 / - | 3 | ✓ Closing fragment |
| 08-28 22:38 | 20m | - / -4 | EA5RW | +2 / - | 3 | Partial capture |
| 08-28 22:37 | 20m | - / - | LZ4VR | -14 / - | 3 | Partial capture |
| 08-28 22:31 | 20m | -17 / +3 | I5HLK | -14 / - | 3 | ✓ Closing observed |
| 08-28 22:27 | 20m | -13 / +3 | DL3RL | -11 / - | 6 | ✓ Full exchange observed |
| 08-28 22:25 | 20m | -14 / - | W9AET | - / -10 | 2 | ✓ Closing fragment |
| 08-28 22:22 | 20m | -16 / - | SV1EKI | - / -10 | 2 | ✓ Closing fragment |
| 08-28 22:11 | 20m | -8 / -12 | PE1EBT | -16 / -13 | 4 | ✓ Full exchange observed |
| 08-28 22:08 | 20m | -12 / -11 | HB9JNM | +1 / -17 | 8 | Partial capture |
| 08-28 22:06 | 20m | -9 / - | KD5BVX | - / -14 | 3 | ✓ Closing fragment |
| 08-28 22:01 | 20m | -12 / -14 | DH2RL | -10 / -20 | 6 | ✓ Full exchange observed |
| 08-28 22:00 | 20m | -14 / - | KT4DZ | - / -6 | 2 | ✓ Closing fragment |
| 08-28 21:59 | 20m | -9 / - | KF0PBS | - / -8 | 2 | ✓ Closing fragment |
| 08-28 21:59 | 20m | - / - | HB9JNM | -3 / - | 4 | Partial capture |
| 08-28 21:55 | 20m | -11 / -11 | 4Z5PT | +3 / -11 | 5 | ✓ Full exchange observed |
| 08-28 21:54 | 20m | - / -11 | EB3JT | +9 / - | 3 | ✓ Closing fragment |
| 08-28 21:52 | 20m | - / -17 | IU5HIU | -4 / - | 3 | ✓ Closing fragment |
| 08-28 01:56 | 20m | -9 / - | KL4QP | - / - | 2 | Partial capture |
| 08-28 01:51 | 20m | - / - | F4BYA | -10 / - | 2 | Partial capture |
| 08-28 01:36 | 20m | - / - | F4BYA | -7 / - | 4 | Partial capture |
| 08-28 01:34 | 20m | -23 / -10 | PD1LVK | -10 / - | 4 | ✓ Closing observed |
| 08-28 01:32 | 20m | - / - | F4BYA | -8 / - | 2 | Partial capture |
| 08-28 01:28 | 20m | -19 / - | SV4LGX | - / -11 | 2 | Partial capture |
| 08-28 01:19 | 20m | - / -15 | V31DL | -3 / - | 3 | ✓ Closing fragment |
| 08-27 22:48 | 20m | - / -8 | SM7HZK | -6 / - | 6 | ✓ Closing fragment |
| 08-27 22:44 | 20m | -13 / - | W4PPT | - / -12 | 2 | ✓ Closing fragment |
| 08-27 22:24 | 20m | -5 / - | KR0ES | - / -7 | 2 | ✓ Closing fragment |
| 08-27 22:22 | 20m | -5 / - | WB9YXA | - / -3 | 2 | ✓ Closing fragment |
| 08-27 22:18 | 20m | -6 / - | KA4DQJ | - / -16 | 2 | ✓ Closing fragment |
| 08-27 22:18 | 20m | - / - | IN3XUG | +10 / - | 2 | Partial capture |
| 08-27 22:17 | 20m | -8 / -19 | UT5MD | +4 / -8 | 6 | ✓ Full exchange observed |
| 08-27 22:15 | 20m | - / - | EA1ARJ | +2 / - | 2 | ✓ Closing fragment |
| 08-27 22:13 | 20m | -9 / - | SA5CDO | - / -16 | 3 | ✓ Closing fragment |
| 08-27 22:09 | 20m | -4 / - | OZ7DR | - / -15 | 2 | Partial capture |
| 08-27 22:08 | 20m | -3 / - | SQ1SDX | - / -4 | 2 | ✓ Closing fragment |
| 08-27 22:03 | 20m | - / -19 | G8NJL | +4 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 230000 -8 2196 KB1FJC IZ8DBJ R-18 (x3) 230200 -8 1507 KB1FJC G5LSB R-09 230430 +1 839 KB1FJC LZ2VQ KN23 230430 -3 2196 KB1FJC IZ8DBJ JN70 (x3) 015845 +3 2985 KB1FJC F5PBG IN78 (x7)
UTC dB Audio Message 235200 -20 1176 CQ KB1FJC FN42 235330 -15 1177 N8RAF KB1FJC RR73 235500 -16 1177 CQ KB1FJC FN42 (x4) 005800 -19 1179 W4QF KB1FJC -06 005830 -20 1179 CQ KB1FJC FN42 005900 -18 1178 WD8IOU KB1FJC -02 (x3) 164615 -10 462 KB1FJC IK4LZH JN54 020115 -9 1970 KB1FJC 5Z4VJ -10 (x3)
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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