JA5NSR — 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: PM73

Receiver-side FT8 activity involving JA5NSR, decoded by SO8OO in southeastern Poland. 154 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-26.

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 154 FT8 messages attributed to JA5NSR as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (99%), followed by 40 m (1%). Most decodes (100%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (65%); the estimated median was -10 dB.

Overview

154
Messages attributed
10
UTC dates decoded
29
Active 15-min windows
-10 dB
Estimated median S/N

Bands

40m · 2 20m · 152
First attributed message: 2026-06-08
Last attributed message: 2026-08-26 16:03 UTC

Observed FT8 message patterns

Attributed sample
154 messages
Active dates
10 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-15 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 100, strong (≥ -8 dB) 47.

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 JA5NSR in decoded directed-looking exchanges:

Most frequent locator attributed to JA5NSR

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
PM73 · 75 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,654 km (approx.)
Last such locator decoded
2026-08-26 16:03 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 UTCBandJA5NSR S/NCounterpartCounterpart S/NMsgsCapture
11-06 15:35 40m - / - 4Z5JO -7 / - 2 Partial capture
11-06 14:57 40m - / - R4HNW +4 / - 2 Partial capture
11-06 13:56 40m - / - IW0BMC -11 / - 3 Partial capture
11-06 13:56 40m - / - UA4PDJ -12 / - 2 Partial capture
11-06 13:55 40m - / -18 R2OM -16 / - 2 Partial capture
11-06 13:55 40m - / - RJ3DC -8 / - 2 Partial capture
11-06 13:46 40m - / - YL3ATJ -8 / - 3 Partial capture
11-06 13:43 40m - / - RJ3DC -12 / - 2 Partial capture
11-06 13:38 40m - / -25 SP1JQJ +7 / - 4 ✓ Closing fragment
11-06 13:33 40m - / - YL3ATJ -3 / - 2 Partial capture
11-05 21:07 40m - / -19 9A3EYA +6 / - 6 ✓ Closing fragment
11-05 15:32 40m - / -25 LZ80RKVT -14 / - 2 Partial capture
11-05 13:31 80m - / - OH1MLZ -7 / - 8 Partial capture
11-05 13:23 80m - / - OH1MLZ -15 / - 3 Partial capture
11-05 13:21 80m - / -15 R1IO -15 / - 3 ✓ Closing fragment
11-04 19:56 40m - / -15 US5MUW +3 / - 5 ✓ Closing fragment
11-04 19:06 40m - / -19 OE2GEN +3 / - 4 ✓ Closing fragment
11-04 15:53 40m - / - DH1AKG -12 / - 2 Partial capture
11-03 13:48 40m - / -21 RA3FD -6 / - 4 ✓ Closing fragment
11-02 19:55 80m - / - SQ4FDK -12 / - 2 Partial capture
11-02 19:23 40m - / - G4FHL -12 / - 3 Partial capture
11-02 16:10 40m - / -19 R3BJZ -14 / - 4 ✓ Closing fragment
10-30 18:34 40m - / -19 R5BD +2 / - 4 Partial capture
10-30 18:22 40m - / - HA1TNX -18 / - 2 Partial capture
10-30 18:16 40m - / - UT0UO -14 / - 2 Partial capture
10-30 15:45 40m - / - RA3DAD -14 / - 2 ✓ Closing fragment
10-30 15:35 40m - / -23 F5GN +3 / - 3 ✓ Closing fragment
10-30 15:29 40m - / -19 UA6AHR +1 / - 4 ✓ Closing fragment
10-29 19:21 40m - / -17 RW3QW +2 / - 2 ✓ Closing fragment
10-29 19:13 40m - / -14 DL5DCN +10 / - 3 ✓ Closing fragment
10-29 16:40 40m - / - DL6NDN +10 / - 2 Partial capture
10-29 15:41 40m - / -12 SV2KBO +6 / - 2 ✓ Closing fragment
10-29 15:13 40m - / -20 OK1WE +6 / - 4 ✓ Closing fragment
10-29 15:00 40m - / -11 LZ5EO 0 / - 6 ✓ Closing fragment
10-29 14:58 40m - / -15 UA3DTS -10 / - 3 ✓ Closing fragment
10-28 20:12 40m - / -17 R6OP -6 / - 3 ✓ Closing fragment
10-28 18:04 40m - / -10 RC2SB -8 / - 2 ✓ Closing fragment
10-28 15:57 40m - / - IN3RWY +6 / - 3 Partial capture
10-28 15:57 40m - / - EU2ABM +4 / - 2 Partial capture
10-27 21:14 40m - / -14 EA6ABF +5 / - 5 ✓ Closing fragment
10-27 19:44 40m - / -15 DG5PW +6 / - 2 Partial capture
10-27 15:31 40m - / - US4EX +8 / - 2 Partial capture
10-27 13:58 40m - / - RK4UZ -8 / - 5 Partial capture
10-27 13:53 40m - / - LZ5EO +5 / - 5 Partial capture
10-27 13:52 40m - / - OM0MR -14 / - 2 Partial capture
10-27 07:39 10m - / - 4X1UF -1 / - 8 Partial capture
10-26 18:33 40m - / -19 DJ6HR +10 / - 10 Partial capture
10-26 17:34 40m - / -20 HB9HGH -6 / - 9 Partial capture
10-26 17:33 40m - / -16 OE3KLU -16 / - 2 Partial capture
10-26 17:29 40m - / -18 OE3KLU -15 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
134815 -17 1128  JA5NSR UF8C 73
135545  -7 1771  JA5NSR RJ3DC KO95
135545 -16 2067  JA5NSR R2OM -18
135615 -12  401  JA5NSR UA4PDJ LO45
135615 -10 1771  JA5NSR RJ3DC KO95
135615 -15 2066  JA5NSR R2OM -18
135615 -13 1126  JA5NSR IW0BMC JN61
135645 -12  401  JA5NSR UA4PDJ LO45
135645  -9 1125  JA5NSR IW0BMC JN61 (x2)
145745  +3  402  JA5NSR R4HNW LO43 (x2)
152915 -13 1438  JA5NSR R4HNX -17
153545  -7  365  JA5NSR 4Z5JO (x2)
80m 
UTC    dB Audio  Message
132115  -4 2056  JA5NSR OH1MLZ KP23
132145 -17 2374  JA5NSR R1IO RR73 (x2)
132345 -14 2056  JA5NSR OH1MLZ KP23 (x11)
134400  +4 2014  JA5NSR LY7M -20
10m 
UTC    dB Audio  Message
073915  -7  398  JA5NSR 4X1UF KM72 (x8)
20m 
UTC    dB Audio  Message
175215  +0  377  JA5NSR M7NTJ JO01
191445  +2 1531  JA5NSR R4FDK LO23 (x2)
191915  +3  546  JA5NSR TA7D KN90 (x3)
184330  -2  629  JA5NSR DL4DTL JN49
181300  +4 1320  JA5NSR SV1AER -02 (x2)
181730  -4  825  JA5NSR TA4DX KM47 (x3)
181900  +9  561  JA5NSR EA3EQS JN01 (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.

CW

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

Explore CW reception at SO8OO

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