JK1VXE — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving JK1VXE, decoded by SO8OO in southeastern Poland. 13 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-07-29.

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 13 FT8 messages attributed to JK1VXE as the transmitting token by decoded message structure across 4 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 -9 dB; no usual signal pattern is inferred.

Overview

13
Messages attributed
4
UTC dates decoded
5
Active 15-min windows
-9 dB
Estimated median S/N

Bands

20m · 13
First attributed message: 2026-06-17
Last attributed message: 2026-07-29 19:51 UTC

Observed FT8 message patterns

Attributed sample
13 messages
Active dates
4 UTC dates
Estimated median S/N
-9 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 6.

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 JK1VXE in decoded directed-looking exchanges:

Most frequent locator attributed to JK1VXE

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 · 11 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,693 km (approx.)
Last such locator decoded
2026-06-19 21:07 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 UTCBandJK1VXE S/NCounterpartCounterpart S/NMsgsCapture
09-17 20:45 40m - / -16 LB7ZG +10 / - 6 Partial capture
09-17 20:45 40m - / -15 LZ1VVD -10 / - 2 ✓ Closing fragment
09-17 20:42 40m - / -16 DK5WL +3 / - 3 ✓ Closing fragment
09-15 20:36 40m - / - R7ZY +4 / - 4 ✓ Closing fragment
09-04 17:05 80m - / -16 HA5OV +2 / - 2 ✓ Closing fragment
08-05 21:26 20m - / - IU4BJC -3 / - 5 Partial capture
08-05 21:26 20m - / -14 CT1EEX -6 / - 2 ✓ Closing fragment
08-04 21:28 20m - / -7 I5HLK -4 / - 2 Partial capture
08-04 21:16 20m - / - EA5OM -16 / - 4 ✓ Closing fragment
07-29 19:54 20m - / -15 CN2DX -8 / - 4 Partial capture
07-29 19:48 20m -18 / -13 CN2DX -7 / -12 7 ✓ Full exchange observed
07-29 19:42 20m - / -20 CN2DX -5 / - 3 Partial capture
07-28 21:24 20m - / +3 IS0AEL -5 / - 2 ✓ Closing fragment
07-24 22:04 20m - / -12 9A2AA -4 / - 2 ✓ Closing fragment
07-22 21:37 20m - / -14 EB5AFK -9 / - 5 ✓ Closing fragment
07-22 21:23 20m - / -14 EA5RR 0 / - 2 ✓ Closing fragment
07-22 20:59 20m - / -5 A61QQ -8 / - 3 ✓ Closing fragment
07-22 20:33 20m - / - IK0QDM -20 / - 2 Partial capture
07-10 07:07 20m - / - PD5DJ -14 / - 5 Partial capture
07-03 20:32 20m - / - EA3JHT -12 / - 2 Partial capture
06-29 20:08 20m - / -20 TA2EC 0 / - 3 ✓ Closing fragment
06-29 19:58 20m - / 0 RZ4FWA -16 / - 2 ✓ Closing fragment
06-29 19:51 20m - / -12 HA3HA -6 / - 4 Partial capture
06-29 19:50 20m - / -6 SV1MOZ -3 / - 2 ✓ Closing fragment
06-29 19:49 20m - / -8 R5FN -2 / - 4 ✓ Closing fragment
06-29 19:48 20m - / - DJ4WT -17 / - 3 Partial capture
06-29 19:48 20m - / - G4DBW -4 / - 2 Partial capture
06-29 19:46 20m - / -1 IW9HPG +3 / - 4 ✓ Closing fragment
06-29 19:45 20m - / - DM5WGL +1 / - 12 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
203745  -2 2509  JK1VXE R7ZY KN98 (x2)
203900 -10 1622  JK1VXE LA8ENA -10
204215  -5  538  JK1VXE R8CW RR73
204245  +5 1844  JK1VXE DK5WL JN39 (x3)
204515  -6 1791  JK1VXE LZ1VVD R-15 (x2)
204545  +9 2942  JK1VXE LB7ZG JP50 (x6)
80m 
UTC    dB Audio  Message
170500  +4 1711  JK1VXE HA5OV -16 (x2)
20m 
UTC    dB Audio  Message
195530  -9 1778  JK1VXE CN2DX -16 (x2)
211600 -13 1782  JK1VXE EA5OM IM99 (x4)
212815  -4 1575  JK1VXE I5HLK -07 (x2)
212600  -5 1634  JK1VXE CT1EEX -14
212630  -5 1075  JK1VXE IU4BJC JN54
212630  -8 1634  JK1VXE CT1EEX RR73
212700  -2 1075  JK1VXE IU4BJC JN54 (x4)

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