JA0AOO — 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: PM97

Receiver-side FT8 activity involving JA0AOO, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 80m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-23 and 2026-10-24.

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 19 FT8 messages attributed to JA0AOO as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 19

First attributed message: 2026-10-23
Last attributed message: 2026-10-24 21:38 UTC

Observed FT8 message patterns

Attributed sample: 19 messages
Active dates: 2 UTC dates
Estimated median S/N: -16 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 2.

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 JA0AOO in decoded directed-looking exchanges:

RU3DNN · European Russia UR4LRG · Ukraine LY1DY · Lithuania SP2WKB · Poland UN8DSW · Kazakhstan UW5KW · Ukraine

Most frequent locator attributed to JA0AOO

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: PM97 · 19 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,513 km (approx.)
Last such locator decoded: 2026-10-24 21:38 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 UTC	Band	JA0AOO S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-24 21:37	80m	-14 / -	OD5ZZ	- / -	2	Partial capture
10-24 21:21	80m	-7 / -	CT7BQH	- / -	2	Partial capture
10-24 21:11	80m	-13 / -	CT7BQH	- / -	2	Partial capture
10-24 21:09	80m	-15 / -	OD5ZZ	- / -	3	Partial capture
10-24 21:03	80m	-16 / -	OD5ZZ	- / -	3	Partial capture
10-24 20:58	80m	- / -24	SP3QDM	+12 / -	3	Partial capture
10-24 20:56	80m	- / -15	LY1DY	+10 / -	4	✓ Closing fragment
10-24 20:52	80m	- / -15	SP2WKB	+10 / -	7	✓ Closing fragment
10-24 20:49	80m	- / -22	UW5KW	+7 / -	4	✓ Closing fragment
10-24 20:47	80m	- / -14	YO2BTW	+9 / -	2	Partial capture
10-24 20:37	160m	- / -	UA6BRD	-18 / -	2	Partial capture
10-24 20:35	160m	- / -24	RU3DNN	-5 / -	4	✓ Closing fragment
10-24 20:33	160m	- / -20	UR4LRG	+4 / -	2	✓ Closing fragment
10-23 21:17	80m	-19 / -12	4O4A	+8 / -	8	Partial capture
10-23 21:12	80m	- / -15	4O4A	+14 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
205830 +11 2943  JA0AOO LY1DY 73
205900 +12 2543  JA0AOO SP3QDM -24 (x2)
210315 -19 1055  OD5ZZ JA0AOO PM97 (x6)
211145 -12  453  CT7BQH JA0AOO PM97 (x4)
213715 -13 2996  OD5ZZ JA0AOO PM97 (x2)

160m

UTC    dB Audio  Message
203300  +0  445  JA0AOO UR4LRG -20 (x2)
203500  -2 2178  JA0AOO RU3DNN KO96 (x4)
203700 -19 2009  JA0AOO UA6BRD LN05 (x2)

20m

UTC    dB Audio  Message
214700  -7  432  JA0AOO IU4PPL JN54

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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