JF3IPR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM74

Receiver-side FT8 activity involving JF3IPR, decoded by SO8OO in southeastern Poland. 3 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-19.

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 3 FT8 messages attributed to JF3IPR as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 40 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

3
Messages attributed
1
UTC dates decoded
2
Active 15-min windows
-
S/N pattern not inferred

Bands

First attributed message: 2026-09-19
Last attributed message: 2026-09-19 21:46 UTC

Observed FT8 message patterns

Attributed sample
3 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 JF3IPR in decoded directed-looking exchanges:

Most frequent locator attributed to JF3IPR

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
PM74 · 2 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,565 km (approx.)
Last such locator decoded
2026-09-19 21:46 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 UTCBandJF3IPR S/NCounterpartCounterpart S/NMsgsCapture
09-19 21:54 40m - / -23 EA7ALL -1 / - 3 ✓ Closing fragment
09-19 21:37 40m - / -19 DB8WK +18 / - 4 Partial capture
09-19 21:34 40m - / -7 R3XBS +4 / - 4 ✓ Closing fragment
09-19 21:31 40m -8 / -20 G7RAU 0 / -25 5 ✓ Full exchange observed
09-19 21:16 40m - / -9 EB5AL -4 / - 7 Partial capture
09-07 22:57 40m - / -18 A61FJ -14 / - 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
213315  -8  541  G7RAU JF3IPR R-25
213400  +4 1276  JF3IPR R3XBS -07 (x4)
213700 +18  466  JF3IPR DB8WK JO33 (x4)
214415  -2 1828  JF3IPR LA8ENA -10
214615 -20 1183  SP100PKP JF3IPR PM74
214830  -2  608  JF3IPR RR73; JH6ETS <...> -16
215430  +0  994  JF3IPR EA7ALL IM88 (x3)

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