JF6CKV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM53

Receiver-side FT8 activity involving JF6CKV, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-13.

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 2 FT8 messages attributed to JF6CKV as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

2
Messages attributed
1
UTC dates decoded
2
Active 15-min windows
-
S/N pattern not inferred

Bands

20m · 2
First attributed message: 2026-06-13
Last attributed message: 2026-06-13 20:48 UTC

Observed FT8 message patterns

Attributed sample
2 messages
Active dates
1 UTC dates
S/N summary
Too few decodes
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

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 JF6CKV in decoded directed-looking exchanges:

Most frequent locator attributed to JF6CKV

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
PM53 · 2 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,425 km (approx.)
Last such locator decoded
2026-06-13 20:48 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 UTCBandJF6CKV S/NCounterpartCounterpart S/NMsgsCapture
09-20 20:31 40m - / -17 9A3MRN +16 / - 2 ✓ Closing fragment
09-06 21:11 40m - / -23 4X1UF -8 / - 3 ✓ Closing fragment
08-13 20:26 20m - / -16 F1DJY +6 / - 3 ✓ Closing fragment
08-04 20:25 40m - / -18 UR1CCT 0 / - 2 ✓ Closing fragment
07-27 20:27 20m - / - IT9ACJ -8 / - 2 ✓ Closing fragment
07-27 19:53 20m - / -18 R4BG -8 / - 2 ✓ Closing fragment
07-25 20:32 20m - / -11 TA2ANK +2 / - 2 ✓ Closing fragment
07-24 20:13 20m - / - 9A5E +1 / - 5 Partial capture
07-13 21:22 20m - / -11 IT9EJW -15 / - 2 ✓ Closing fragment
07-10 20:07 20m - / -18 S57FF -4 / - 4 Partial capture
07-07 20:37 20m - / -18 IK5AUL -9 / - 3 Partial capture
06-30 20:27 20m - / -17 DL3MIB -7 / - 12 Partial capture
06-29 11:36 10m - / -19 A71UN -18 / - 2 Partial capture
06-27 20:43 20m - / -26 EA7ALL -1 / - 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
202530  -1 1192  JF6CKV UR1CCT R-18 (x2)
211100  -8  229  JF6CKV 4X1UF -23 (x3)
203100 +14  243  JF6CKV 9A3MRN -17 (x2)
20m 
UTC    dB Audio  Message
201445  +2 2209  JF6CKV 9A5E JN75 (x3)
203230  +2  917  JF6CKV TA2ANK -11 (x2)
195330 -10 2068  JF6CKV R4BG -18 (x2)
201000 -14 1680  JF6CKV 4Z1GY -16
202245  +1 1223  JF6CKV PD6X -25
202700  -6  371  JF6CKV IT9ACJ RR73 (x2)
202400 -13 1470  JF6CKV CT7AUT -16
202630  +8  590  JF6CKV F1DJY -16 (x3)
10m 
UTC    dB Audio  Message
121445 -23 1839  JF6CKV A61FJ -07
113600 -20 1469  JF6CKV A71UN -19 (x2)

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