JF3KON — 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: PM74

Receiver-side FT8 activity involving JF3KON, decoded by SO8OO in southeastern Poland. 52 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-03.

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 52 FT8 messages attributed to JF3KON as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (50%), followed by 80 m (37%) and 40 m (13%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

52
Messages attributed
7
UTC dates decoded
12
Active 15-min windows
-9 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-11-03 21:19 UTC

Observed FT8 message patterns

Attributed sample
52 messages
Active dates
7 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-17 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 26.

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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with JF3KON in decoded directed-looking exchanges:

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to JF3KON

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 · 38 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,565 km (approx.)
Last such locator decoded
2026-11-03 21:19 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 UTCBandJF3KON S/NCounterpartCounterpart S/NMsgsCapture
11-03 21:17 80m -10 / - GU4WRP - / -24 2 Partial capture
11-03 21:07 80m - / - DL4JLM +14 / - 2 Partial capture
11-03 20:58 80m - / - SP4JSR +6 / - 2 Partial capture
11-03 20:54 80m - / - ON6AA +8 / - 3 Partial capture
10-30 20:36 80m - / -7 4O4A +15 / - 4 ✓ Closing fragment
10-02 20:57 80m - / - ON6AA +10 / - 2 Partial capture
10-02 20:55 80m -16 / -11 TF4M -5 / -16 8 Partial capture
09-22 20:00 40m - / - 9A5CW +14 / - 6 Partial capture
09-22 19:59 40m - / - HB9ELE +5 / - 4 Partial capture
09-22 19:59 40m - / -14 ON2BCB -4 / - 2 ✓ Closing fragment
09-22 19:53 40m - / - HB9ELE +9 / - 7 Partial capture
09-15 20:26 80m - / - LA5FJA -1 / - 2 Partial capture
09-12 19:47 40m - / - YO3EGE +6 / - 2 Partial capture
09-01 19:33 40m - / -10 DF8IU +8 / - 2 Partial capture
09-01 19:29 40m -14 / - CN8NS - / - 4 Partial capture
09-01 19:21 40m - / -10 DF8IU +12 / - 3 Partial capture
09-01 19:19 40m -12 / - CN8NS - / - 2 Partial capture
09-01 19:17 40m - / - R7ZY +9 / - 4 Partial capture
09-01 19:10 40m - / - LB7ZG +8 / - 2 Partial capture
08-12 20:02 80m - / - RO2X -8 / - 4 Partial capture
08-12 19:57 80m - / - HA7XL +21 / - 3 Partial capture
08-12 19:57 80m - / - SV8TCK -9 / - 3 Partial capture
08-12 19:55 80m - / - RO2X -7 / - 6 Partial capture
08-12 19:54 80m - / - E74MG +2 / - 3 Partial capture
08-12 19:53 80m -10 / +9 LZ1GC +4 / -7 4 ✓ Full exchange observed
08-12 19:53 80m -9 / -13 SV6JHA +3 / - 5 ✓ Closing observed
08-12 19:53 80m - / - UD6F -7 / - 6 Partial capture
08-12 19:52 80m - / - SP9UPH +15 / - 2 Partial capture
08-12 19:51 80m -13 / -10 RY7F -14 / - 6 ✓ Closing observed
08-12 19:51 80m - / - SP5AEY +5 / - 3 Partial capture
08-12 19:50 80m -15 / -20 SP2HNF +13 / -19 7 ✓ Full exchange observed
08-12 19:49 80m -11 / -12 LA9GX +10 / -15 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m
UTC    dB Audio  Message
203630 +14 2696  JF3KON 4O4A -07 (x4)
205430  +2 1053  JF3KON UA1AEL -10
205430 +11 1815  JF3KON ON6AA JO11 (x3)
205830  +4 2345  JF3KON SP4JSR KO12 (x2)
210615 -20 1471  GU4WRP JF3KON PM74
210700 +10 2429  JF3KON DL4JLM JN58 (x2)
211715 -11 1506  GU4WRP JF3KON -24 (x2)
40m
UTC    dB Audio  Message
195530  +8  840  JF3KON HB9ELE JN47 (x3)
195900  -4 2439  JF3KON ON2BCB -14 (x2)
195930  +3  840  JF3KON HB9ELE JN47 (x2)
200000 +13  403  JF3KON 9A5CW JN65
200030  +5  840  JF3KON HB9ELE JN47
200030 +15  403  JF3KON 9A5CW JN65
200100  +4  841  JF3KON HB9ELE JN47
200100 +10  403  JF3KON 9A5CW JN65 (x4)

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.

CW

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

Explore CW reception at SO8OO

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