JK3NSD — 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 JK3NSD, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-08-27.

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 2 FT8 messages attributed to JK3NSD as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The available sample contains attributed decodes on 40 m (50%) and 20 m (50%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

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

Bands

40m · 1 20m · 1
First attributed message: 2026-06-17
Last attributed message: 2026-08-27 20:00 UTC

Observed FT8 message patterns

Attributed sample
2 messages
Active dates
2 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 JK3NSD in decoded directed-looking exchanges:

Most frequent locator attributed to JK3NSD

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
2026-08-27 20:00 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 UTCBandJK3NSD S/NCounterpartCounterpart S/NMsgsCapture
11-05 18:10 80m - / -20 YO2CR 0 / - 2 ✓ Closing fragment
11-02 18:51 80m - / - OZ1ADL -8 / - 2 Partial capture
10-31 20:56 80m - / -12 E79D +25 / - 2 Partial capture
10-29 21:40 80m - / -23 IS0BOZ 0 / - 2 Partial capture
10-29 17:41 80m - / -22 HB9AZZ +5 / - 3 Partial capture
10-29 14:41 80m - / -19 SA2ENN -5 / - 2 ✓ Closing fragment
10-29 14:37 80m - / -17 LA9GX -3 / - 2 ✓ Closing fragment
10-25 20:51 80m - / -25 4O4A +20 / - 4 ✓ Closing fragment
10-16 17:13 40m - / - RA3ZH -12 / - 5 Partial capture
10-16 14:14 80m - / -10 OH4SS -17 / - 2 Partial capture
10-16 14:02 80m - / -13 OI7AX -11 / - 2 ✓ Closing fragment
10-10 10:56 10m - / +6 SQ8DPZ -10 / - 2 Partial capture
10-06 21:02 80m - / -19 OT7K +5 / - 3 Partial capture
10-01 21:03 40m - / - RA3ZH +5 / - 5 Partial capture
10-01 21:01 40m - / -19 HB9ELE +14 / - 7 ✓ Closing fragment
10-01 20:56 40m - / -12 ON6WDL +18 / - 2 ✓ Closing fragment
09-21 17:12 80m - / -13 DJ7M +16 / - 3 ✓ Closing fragment
09-21 17:03 80m - / -21 OH5KNL +11 / - 4 Partial capture
09-18 18:34 40m - / - RU3KV -5 / - 2 Partial capture
09-10 20:50 40m - / - RA3ZH +5 / - 3 Partial capture
09-05 19:17 80m - / -22 UR4LRG +16 / - 2 Partial capture
09-04 16:46 80m - / - S51DI +4 / - 2 Partial capture
09-03 18:33 80m - / -21 OH5LF +10 / - 3 Partial capture
09-03 18:17 80m - / -15 LY8O +6 / - 4 ✓ Closing fragment
09-03 18:09 80m - / - UT6US -2 / - 2 Partial capture
09-03 18:07 80m - / -10 LY5W +12 / - 2 ✓ Closing fragment
08-29 19:30 80m - / -17 SV2AEL +9 / - 3 Partial capture
08-21 20:20 40m - / -25 HB9HMX -6 / - 2 ✓ Closing fragment
08-21 20:03 40m - / -22 ON4IQ +14 / - 7 Partial capture
08-18 14:55 20m - / -19 DG2XB -5 / - 3 Partial capture
08-11 17:01 20m - / - R2HH -8 / - 2 Partial capture
08-09 20:09 40m - / - ON7NQ -2 / - 9 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
143800  -5  572  JK3NSD LA9GX RR73
144130  -5 2670  JK3NSD SA2ENN -19 (x2)
174145  +4 2177  JK3NSD HB9AZZ -22 (x3)
214045  +0  560  JK3NSD IS0BOZ -23 (x3)
205645 +26 2802  JK3NSD E79D -12 (x2)
185130  -3 1939  JK3NSD OZ1ADL JO46 (x2)
181015  +0 2066  JK3NSD YO2CR -20 (x2)
40m 
UTC    dB Audio  Message
210315 +14  642  JK3NSD HB9ELE JN47
210345  +0 2393  JK3NSD RA3ZH KO81
210345 +11  642  JK3NSD HB9ELE JN47
210415  +5 2393  JK3NSD RA3ZH KO81
210415 +16  642  JK3NSD HB9ELE R-19
210445  +8 2393  JK3NSD RA3ZH KO81
210445 +10  642  JK3NSD HB9ELE 73
210515  +4 2393  JK3NSD RA3ZH KO81 (x4)
171400 -12 1242  JK3NSD UW2ZO KN67
171400 -11  294  JK3NSD RA3ZH KO81 (x3)
10m 
UTC    dB Audio  Message
105645 -10  643  JK3NSD SQ8DPZ +06 (x2)
20m 
UTC    dB Audio  Message
201400 -21 2223  JK3NSD IK0QDM JN61
170100  -2 1221  JK3NSD F4LQJ R-20
170130  -4 2069  JK3NSD R2HH KO84 (x2)
195945 -12 2146  JK3NSD IK0QDM JN61
145530  -2  843  JK3NSD DG2XB -19 (x3)

CW

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

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee