JE7CJL — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: QM09

Receiver-side FT8 activity involving JE7CJL, decoded by SO8OO in southeastern Poland. 11 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-06-19.

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 11 FT8 messages attributed to JE7CJL as the transmitting token by decoded message structure across 2 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

11
Messages attributed
2
UTC dates decoded
3
Active 15-min windows
-9 dB
Estimated median S/N

Bands

First attributed message: 2026-06-13
Last attributed message: 2026-06-19 22:03 UTC

Observed FT8 message patterns

Attributed sample
11 messages
Active dates
2 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) 0, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 5.

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 JE7CJL in decoded directed-looking exchanges:

Most frequent locator attributed to JE7CJL

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
QM09 · 6 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,434 km (approx.)
Last such locator decoded
2026-06-19 22:03 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 UTCBandJE7CJL S/NCounterpartCounterpart S/NMsgsCapture
10-20 21:55 40m - / -18 OE8DDX -14 / - 2 ✓ Closing fragment
08-26 21:45 20m - / -16 EA5JLB -12 / - 4 Partial capture
08-26 21:44 20m - / -14 EA8AT -2 / - 4 Partial capture
08-21 22:17 20m - / -8 ON3KJU -4 / - 5 Partial capture
08-21 22:15 20m - / +3 HB9HSJ +2 / - 2 ✓ Closing fragment
08-21 22:12 20m - / -12 SV5BYP -5 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
215515 -14 2382  JE7CJL OE8DDX -18 (x2)
214145  -4  412  JE7CJL RA3ZH KO81
20m
UTC    dB Audio  Message
221745  -7 1143  JE7CJL ON3KJU -08 (x5)
212300  +5  977  JE7CJL II7MGXX -11
212330  +6  977  JE7CJL RR73; IU5TFD <...> -06
214400  +1 1145  JE7CJL EA8AT -14 (x3)
214500 -12 2044  JE7CJL EA5JLB -16
214530  -5 1145  JE7CJL EA8AT -14
214530 -14 2044  JE7CJL EA5JLB -16 (x3)

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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