JK1GOK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM95

Receiver-side FT8 activity involving JK1GOK, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-02 and 2026-09-08.

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 22 FT8 messages attributed to JK1GOK as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -7 dB; no usual signal pattern is inferred.

Overview

22
Messages attributed
2
UTC dates decoded
3
Active 15-min windows
-7 dB
Estimated median S/N

Bands

First attributed message: 2026-09-02
Last attributed message: 2026-09-08 20:41 UTC

Observed FT8 message patterns

Attributed sample
22 messages
Active dates
2 UTC dates
Estimated median S/N
-7 dB
Estimated 10th-90th percentile
-12 to -2 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 13.

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 JK1GOK in decoded directed-looking exchanges:

Most frequent locator attributed to JK1GOK

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 · 20 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,693 km (approx.)
Last such locator decoded
2026-09-02 20:43 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 UTCBandJK1GOK S/NCounterpartCounterpart S/NMsgsCapture
09-08 20:57 40m - / -8 SY1BKQ +7 / - 2 Partial capture
09-08 20:40 40m - / - LB7ZG 0 / - 2 Partial capture
09-08 20:38 40m -9 / -11 IZ0ZIP +12 / -9 4 ✓ Full exchange observed
09-08 20:38 40m -10 / -6 R7ZY +7 / - 9 ✓ Closing observed
09-08 20:38 40m - / -12 RD6OB +6 / - 6 ✓ Closing fragment
09-08 20:38 40m - / -8 UF5F -2 / - 3 ✓ Closing fragment
09-02 20:46 40m - / -8 TC2EYL -11 / - 2 ✓ Closing fragment
09-02 20:42 40m -10 / - TC2EYL - / - 2 Partial capture
09-02 20:33 40m -9 / - CN8NS - / - 5 Partial capture
09-02 20:28 40m -1 / - CT1EEX - / - 3 Partial capture
09-02 20:19 40m -8 / - CN8NS - / - 9 Partial capture
08-07 08:09 20m - / - ON6AA -4 / - 2 Partial capture
08-07 08:03 20m - / - ON6AA +1 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m
UTC    dB Audio  Message
203930  +7 2465  JK1GOK R7ZY KN98
203930 +13 2937  JK1GOK IZ0ZIP RR73
204000  +4 2465  JK1GOK R7ZY KN98
204030 +10 1610  JK1GOK RD6OB R-12
204030  +6 2465  JK1GOK R7ZY KN98
204030  -1 2887  JK1GOK LB7ZG JP50
204100  +8 1610  JK1GOK RD6OB 73
204100  +5 2465  JK1GOK R7ZY KN98 (x2)
204145 -10 2938  R7ZY JK1GOK RR73
204200  +5 2465  JK1GOK R7ZY 73
204200  +2 2808  JK1GOK LB7ZG JP50
205530  -1  433  JK1GOK RR73; RA9ACA <...> -10
205730  +8 2980  JK1GOK SY1BKQ -08 (x2)
20m
UTC    dB Audio  Message
080315  -2 1579  JK1GOK ON6AA JO11 (x5)

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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