JA6CNL — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving JA6CNL, decoded by SO8OO in southeastern Poland. 126 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-27.

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 126 FT8 messages attributed to JA6CNL as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (97%), followed by 40 m (3%). Several six-hour UTC windows tied for the largest share (99%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

126
Messages attributed
11
UTC dates decoded
20
Active 15-min windows
-8 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-08-27 19:31 UTC

Observed FT8 message patterns

Attributed sample
126 messages
Active dates
11 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-14 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 56, strong (≥ -8 dB) 66.

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.

Most frequent locator attributed to JA6CNL

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 · 36 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,425 km (approx.)
Last such locator decoded
2026-06-19 19:12 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 UTCBandJA6CNL S/NCounterpartCounterpart S/NMsgsCapture
09-15 18:49 40m - / -20 DB8WK +13 / - 5 ✓ Closing fragment
09-15 18:47 40m - / -21 M1DZI -2 / - 3 Partial capture
08-30 20:14 20m - / -9 TA4DX +1 / - 2 ✓ Closing fragment
08-29 20:12 20m - / -16 AO5FSB +6 / - 2 ✓ Closing fragment
08-29 20:01 40m - / -25 OM2CW -11 / - 2 Partial capture
08-29 19:45 40m - / -24 E70SZ -2 / - 3 ✓ Closing fragment
08-28 18:55 40m - / -17 AO5FSB -12 / - 2 ✓ Closing fragment
08-28 18:45 40m - / -22 EA3DNC -20 / - 3 ✓ Closing fragment
08-28 18:42 40m - / -24 DC9LJ +8 / - 4 ✓ Closing fragment
08-28 18:20 40m - / -11 EA6ET +3 / - 2 ✓ Closing fragment
08-28 18:17 40m - / - DG5RN +4 / - 2 Partial capture
08-28 18:16 40m - / - EA6ET -1 / - 2 Partial capture
08-27 19:40 40m - / - EA5JNN/QRP -20 / - 4 Partial capture
08-27 19:39 40m - / -20 EI8GS +4 / - 6 ✓ Closing fragment
08-27 19:36 40m - / - DK3ME +16 / - 4 Partial capture
08-27 19:34 40m - / -18 MW0DNF +2 / - 2 Partial capture
08-27 19:30 40m -3 / -2 RT2H +1 / -13 9 Partial capture
08-27 19:29 40m - / -12 SP5DC +4 / - 4 ✓ Closing fragment
08-27 19:27 40m -12 / - EC5M - / -20 2 Partial capture
08-27 19:16 40m - / -24 II7MGBT +1 / - 5 Partial capture
08-27 19:08 40m - / -22 EG5DX -8 / - 5 Partial capture
08-27 19:05 40m - / -16 HF30NPN -10 / - 3 Partial capture
08-27 19:02 40m - / -9 UC6D +8 / - 4 Partial capture
08-26 20:59 40m - / - RK1B -6 / - 2 Partial capture
08-26 20:58 40m - / -24 II7MGBT -7 / - 5 Partial capture
08-25 21:31 20m -11 / - 5N0YEN - / -16 3 ✓ Closing fragment
08-24 20:09 40m - / -18 OL900CO +9 / - 4 Partial capture
08-24 19:40 40m - / -11 DL1TRK +3 / - 5 Partial capture
08-24 19:35 40m - / - G4AON +7 / - 3 Partial capture
08-24 18:34 20m - / - ON7NQ +16 / - 13 Partial capture
08-23 19:53 40m - / -13 RA3APK -9 / - 2 Partial capture
08-23 19:46 40m - / - SP9NR +14 / - 2 Partial capture
08-21 17:57 20m - / -11 EA3NE +14 / - 3 ✓ Closing fragment
08-21 17:54 20m - / - IV3KON +7 / - 5 ✓ Closing fragment
08-21 17:51 20m - / - DL9UXF +9 / - 4 Partial capture
08-21 17:48 20m - / -15 DL7GAL +9 / - 3 ✓ Closing fragment
08-21 17:48 20m - / - IS0LYN -9 / - 3 Partial capture
08-21 17:46 20m - / -17 4Z4DA +12 / - 4 ✓ Closing fragment
08-21 17:43 20m - / -7 <...> 0 / - 2 Partial capture
08-20 19:27 20m - / - DG5PW +4 / - 4 Partial capture
08-20 19:11 20m - / -11 UN0PA -6 / - 2 ✓ Closing fragment
08-20 18:55 20m - / -18 ON4IQ +21 / - 5 ✓ Closing fragment
08-20 18:49 20m - / -7 LB8OH -4 / - 3 ✓ Closing fragment
08-20 18:16 20m - / -13 AO25FDM -11 / - 2 Partial capture
08-16 20:05 40m - / - ON7NQ -1 / - 9 Partial capture
08-16 17:20 20m - / -13 EA1B 0 / - 3 ✓ Closing fragment
08-11 18:02 40m - / -19 UI5D -5 / - 2 ✓ Closing fragment
08-11 17:55 40m - / -24 IZ7NLJ -8 / - 3 ✓ Closing fragment
08-11 17:52 40m - / -15 OK2IT +16 / - 3 ✓ Closing fragment
08-10 19:56 40m - / -18 LB7ZG -8 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
185600 -13 2133  JA6CNL AO5FSB 73
194545  +0 1462  JA6CNL E70SZ R-24 (x3)
200145 -12 2125  JA6CNL OM2CW JN88 (x2)
184730  -4 1135  JA6CNL M1DZI R-21 (x3)
184930 +20  454  JA6CNL DB8WK JO33 (x5)
200400  -8 1482  JA6CNL II8IHBC R-21
20m
UTC    dB Audio  Message
183700 +19 2597  JA6CNL ON7NQ JO21 (x8)
213130 -12  457  5N0YEN JA6CNL -16 (x3)
201215  +6 1884  JA6CNL AO5FSB R-16 (x2)
201415  +1  826  JA6CNL TA4DX R-09 (x2)
10m
UTC    dB Audio  Message
111445 -22 2159  JA6CNL D2ACE R-10

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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