JJ2CJB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JJ2CJB, decoded by SO8OO in southeastern Poland. 13 FT8 messages attributed to this token as transmitter, on 20m, across 5 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 13 FT8 messages attributed to JJ2CJB as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 13 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- -15 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 1.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with JJ2CJB in decoded directed-looking exchanges:
Most frequent locator attributed to JJ2CJB
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
- PM85 · 7 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,586 km (approx.)
- Last such locator decoded
- 2026-06-19 14:42 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 | JJ2CJB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-02 07:49 | 10m | - / -17 | LZ2II | -21 / - | 2 | ✓ Closing fragment |
| 09-02 07:44 | 10m | - / -2 | IT9IRV | -14 / - | 2 | ✓ Closing fragment |
| 08-24 13:54 | 20m | - / - | UA4AFY | -10 / - | 2 | Partial capture |
| 08-04 20:14 | 20m | - / -9 | 7X5CY | 0 / - | 2 | ✓ Closing fragment |
| 07-28 14:31 | 20m | - / - | DK8IF | -6 / - | 2 | Partial capture |
| 07-18 22:32 | 20m | - / -12 | EA7ALL | +3 / - | 4 | ✓ Closing fragment |
| 07-03 13:13 | 20m | - / -25 | GB2WWA | -9 / - | 4 | Partial capture |
| 07-02 10:53 | 10m | - / -4 | 7Q9BK | -21 / - | 2 | ✓ Closing fragment |
| 06-26 14:51 | 20m | - / - | SP4DIS | -10 / - | 2 | Partial capture |
| 06-25 12:40 | 20m | - / -16 | UT5ZC | -20 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 105330 -24 1842 JJ2CJB 7Q9BK -04 (x2) 042915 -23 1952 JJ2CJB RD7LC -09 074445 -13 2026 JJ2CJB IT9IRV -02 (x2) 074615 -20 2284 JJ2CJB EA3AKY -06 074945 -24 1690 JJ2CJB LZ2II -17 (x2)
UTC dB Audio Message 141815 -19 1980 JJ2CJB R0AX 73 065330 +8 2705 JJ2CJB DL2026C -14 223215 +4 2955 JJ2CJB EA7ALL IM88 (x4) 143130 -8 2594 JJ2CJB DK8IF JN49 (x2) 201430 +0 691 JJ2CJB 7X5CY -09 (x2) 230100 -11 1469 JJ2CJB CU2AP RR73 230400 +6 2969 JJ2CJB DF7EF -14 141430 -17 2065 JJ2CJB OZ6FH JO47 135400 -10 1568 JJ2CJB UA4AFY LO20 (x2)
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