JE7JDL — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving JE7JDL, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-05.

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 30 FT8 messages attributed to JE7JDL 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 (87%), followed by 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

30
Messages attributed
7
UTC dates decoded
11
Active 15-min windows
-9 dB
Estimated median S/N

Bands

40m · 4 20m · 26
First attributed message: 2026-06-10
Last attributed message: 2026-09-05 19:40 UTC

Observed FT8 message patterns

Attributed sample
30 messages
Active dates
7 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-17 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 15.

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 JE7JDL 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 JE7JDL

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 · 17 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,434 km (approx.)
Last such locator decoded
2026-08-27 20:16 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 UTCBandJE7JDL S/NCounterpartCounterpart S/NMsgsCapture
09-14 19:23 80m - / - RW4HBD -20 / - 2 Partial capture
09-14 19:23 80m - / -22 UA9LT -15 / - 2 Partial capture
09-10 20:36 40m - / - UX1VT -6 / - 4 Partial capture
09-05 20:22 40m - / - LZ2INP +4 / - 2 Partial capture
09-05 19:39 40m -12 / -15 LB7ZG +13 / - 4 ✓ Closing observed
09-05 19:38 40m -12 / -12 T77NC -6 / - 3 ✓ Closing observed
08-27 20:18 40m - / -18 F5RRS 0 / - 3 Partial capture
08-27 20:16 40m -10 / - 5Z4AB -14 / - 3 ✓ Closing observed
08-20 19:04 20m - / -11 EI9IB -7 / - 3 ✓ Closing fragment
08-20 19:03 20m - / - ON4IQ +20 / - 3 ✓ Closing fragment
08-20 19:02 20m - / -19 DC5EG -2 / - 3 Partial capture
08-10 20:21 20m -17 / +4 EA3NE +2 / - 5 ✓ Closing observed
08-10 20:21 20m - / -6 LY3CY -12 / - 3 ✓ Closing fragment
08-10 20:19 20m -17 / -10 RN2FQ -2 / 0 6 ✓ Full exchange observed
08-10 20:14 20m - / +2 DL2SWA -15 / - 3 ✓ Closing fragment
07-28 20:11 20m - / -14 UX5UO -6 / - 4 ✓ Closing fragment
07-28 20:05 20m - / -1 IZ2DPX +1 / - 3 ✓ Closing fragment
07-28 20:00 20m - / - IK8UDK -5 / - 2 Partial capture
07-28 19:57 20m - / -14 IS0KNG -19 / - 2 ✓ Closing fragment
07-21 20:32 20m -7 / - 7X5SV - / - 2 Partial capture
07-21 20:20 20m -8 / - <...> - / - 4 Partial capture
07-21 20:04 20m - / -10 IZ8EYN -4 / - 4 Partial capture
07-21 20:03 20m - / - F4NKE -12 / - 2 Partial capture
07-21 20:01 20m -6 / -2 CN2DX +6 / - 6 ✓ Closing observed
07-14 20:07 20m - / -12 EA3EDU -3 / - 5 ✓ Closing fragment
07-09 20:32 20m -16 / - SP8ADU - / -10 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
192315 -16  339  JE7JDL UA9LT -22 (x2)
192345 -24 1949  JE7JDL RW4HBD LO53 (x2)
40m 
UTC    dB Audio  Message
201945  +0 1880  JE7JDL F5RRS R-18
193815  -6  425  JE7JDL T77NC -12 (x2)
193900 -12  426  T77NC JE7JDL 73
193945  +9 2970  JE7JDL LB7ZG JP50 (x2)
194030 -12  425  LB7ZG JE7JDL RR73
194045 +16 2970  JE7JDL LB7ZG 73
202215  -1 1539  JE7JDL T77R RR73
202245  +7  646  JE7JDL LZ2INP KN34 (x2)
203615  -5 2107  JE7JDL UX1VT KN68 (x4)
20m 
UTC    dB Audio  Message
202315  -1 2346  JE7JDL EA3NE JN11 (x2)
202400 -17 2346  EA3NE JE7JDL RR73
202415  +2 2346  JE7JDL EA3NE 73
202445  -3 2345  JE7JDL GJ0KYZ IN89
190100  -4 2376  JE7JDL D2IM +00
190200  -9  789  JE7JDL DC5EG -19 (x3)
190315 +21 2701  JE7JDL ON4IQ JO20 (x3)
190445  -2 2424  JE7JDL EI9IB IO63 (x3)

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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