JA4ONP — 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: PM75

Receiver-side FT8 activity involving JA4ONP, decoded by SO8OO in southeastern Poland. 3 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-27 and 2026-08-25.

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 3 FT8 messages attributed to JA4ONP as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

3
Messages attributed
2
UTC dates decoded
2
Active 15-min windows
-
S/N pattern not inferred

Bands

20m · 3
First attributed message: 2026-07-27
Last attributed message: 2026-08-25 13:50 UTC

Observed FT8 message patterns

Attributed sample
3 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 JA4ONP in decoded directed-looking exchanges:

Most frequent locator attributed to JA4ONP

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
PM75
SO8OO receiver locator
KN09VW
Locator-centre separation
8,477 km (approx.)
Last such locator decoded
2026-07-27 18:31 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 UTCBandJA4ONP S/NCounterpartCounterpart S/NMsgsCapture
10-31 14:01 80m - / -13 RD5D +5 / - 7 ✓ Closing fragment
10-31 14:00 80m - / -15 UA3DPM +6 / - 2 ✓ Closing fragment
10-30 22:07 40m - / -13 5B4AMX -14 / - 3 ✓ Closing fragment
10-29 21:49 160m - / -17 DJ5MN +13 / - 5 Partial capture
10-29 21:41 160m - / -19 HA5OV +8 / - 2 ✓ Closing fragment
10-29 20:35 160m - / -19 F4EZJ -5 / - 2 ✓ Closing fragment
10-29 20:26 160m - / -18 ON4IQ +14 / - 2 ✓ Closing fragment
10-28 21:31 160m - / -19 R5AJ +9 / - 4 ✓ Closing fragment
10-28 21:15 160m - / -22 E73S +6 / - 2 ✓ Closing fragment
10-28 21:12 160m - / -18 F5BZB +6 / - 2 ✓ Closing fragment
10-28 20:48 160m - / -15 RU3UR -4 / - 3 ✓ Closing fragment
10-24 08:00 10m - / +5 RA9AAA -12 / - 2 ✓ Closing fragment
10-23 19:59 160m - / -7 4J3DJ -2 / - 2 ✓ Closing fragment
10-17 20:38 160m - / -15 4J3DJ -4 / - 2 ✓ Closing fragment
10-13 20:51 160m - / -8 RW9JZ -6 / - 2 ✓ Closing fragment
10-12 21:08 80m - / -16 OT7K +17 / - 2 Partial capture
10-02 20:24 160m - / -17 EW6CB -2 / - 2 ✓ Closing fragment
10-02 15:26 160m - / -24 RY3K -2 / - 2 ✓ Closing fragment
09-08 20:03 160m - / -20 UA6BRD -4 / - 2 ✓ Closing fragment
09-08 19:36 160m - / -16 RK3QA -7 / - 3 ✓ Closing fragment
08-28 20:22 80m - / -14 RA3GZ +8 / - 2 ✓ Closing fragment
08-26 12:22 20m - / -17 GM0SDV -12 / - 2 Partial capture
08-26 11:27 20m - / -15 RA3TOS -16 / - 8 Partial capture
08-25 14:17 20m - / - M0CKX -11 / - 3 Partial capture
08-25 13:50 20m -15 / - NA0D - / -24 2 Partial capture
08-15 13:47 20m - / -15 ON4IQ 0 / - 4 ✓ Closing fragment
08-11 20:28 40m - / -14 Z34K -16 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
201515 -11 1721  JA4ONP RD9U RR73
202245  +7 1152  JA4ONP RA3GZ -14 (x2)
210800 +15  548  JA4ONP OT7K -16 (x2)
140030  +6 2673  JA4ONP UA3DPM -15 (x2)
140130  +4 1003  JA4ONP RD5D KO95 (x7)
40m 
UTC    dB Audio  Message
202845 -17 1239  JA4ONP Z34K RR73 (x3)
152045 -24 1679  JA4ONP A61FJ -14
220715 -15  984  JA4ONP 5B4AMX -13 (x3)
160m 
UTC    dB Audio  Message
213145  +7 2089  JA4ONP R5AJ -19 (x3)
202645 +13 2672  JA4ONP ON4IQ -18 (x2)
203515  -5 2392  JA4ONP F4EZJ -19 (x2)
210515 -13  551  JA4ONP EA3A RR73
214100  +9 1832  JA4ONP HA5OV -19 (x2)
214945 +13 1218  JA4ONP DJ5MN -17 (x5)
10m 
UTC    dB Audio  Message
080000 -13 2489  JA4ONP RA9AAA +05 (x2)
20m 
UTC    dB Audio  Message
141800 -12 1862  JA4ONP M0CKX IO93 (x2)
112715 -17 2220  JA4ONP RA3TOS -15 (x8)
121930 -11 1450  JA4ONP R7DX R-23
122200 -13 2246  JA4ONP GM0SDV -17 (x2)
125000  -6 1287  JA4ONP F6GGA JN37
205200  -4  305  JA4ONP T77RN -05

CW

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

Explore CW reception at SO8OO

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