JA0DBQ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM95

Receiver-side FT8 activity involving JA0DBQ, decoded by SO8OO in southeastern Poland. 4 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-21.

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 4 FT8 messages attributed to JA0DBQ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (75%) and 80 m (25%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

S/N pattern not inferred

Bands

80m · 1 20m · 3

First attributed message: 2026-06-10
Last attributed message: 2026-08-21 13:32 UTC

Observed FT8 message patterns

Attributed sample: 4 messages
Active dates: 3 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 JA0DBQ in decoded directed-looking exchanges:

IZ8NVV · Italy 9K2GR · Kuwait EC6DX · Balearic Islands EW2ZC · Belarus F4NGC · France R6OAU · European Russia PI4DX · Netherlands LY1DY · Lithuania LZ2INP · Bulgaria OH3NXW · Finland R3DLK · European Russia SQ7FPH · Poland

Most frequent locator attributed to JA0DBQ

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: PM95 · 2 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,693 km (approx.)
Last such locator decoded: 2026-07-17 19:15 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	JA0DBQ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 18:18	40m	- / -13	PI4DX	+2 / -	2	✓ Closing fragment
09-11 18:41	80m	- / -	DJ7M	+19 / -	6	Partial capture
09-08 19:06	80m	- / -12	UX1AA	+4 / -	9	✓ Closing fragment
09-08 18:50	80m	- / -21	OH3NXW	+23 / -	3	✓ Closing fragment
09-08 18:48	80m	- / -25	SQ7FPH	+17 / -	5	✓ Closing fragment
09-06 18:38	80m	- / -19	UR4LRG	+15 / -	2	✓ Closing fragment
09-06 18:25	80m	- / -	UT7UA	+4 / -	2	Partial capture
09-06 18:22	80m	- / -16	R1943OD	+9 / -	2	Partial capture
09-06 18:22	80m	- / -17	R3DLK	-9 / -	7	✓ Closing fragment
08-17 20:08	80m	- / -19	LY1DY	+1 / -	3	✓ Closing fragment
08-17 20:01	80m	- / -	UT7UA	+4 / -	5	Partial capture
08-17 19:59	80m	- / -17	LZ2INP	+4 / -	4	✓ Closing fragment
08-13 19:54	20m	- / -9	F4NGC	-8 / -	5	✓ Closing fragment
07-19 22:39	10m	- / -14	IZ8NVV	-6 / -	6	✓ Closing fragment
07-18 17:38	20m	- / -24	MI0JZZ	-13 / -	3	Partial capture
07-17 19:18	80m	- / -10	OH1CIN	+1 / -	2	Partial capture
07-17 19:13	80m	-24 / -14	OH1CIN	+2 / -	3	Partial capture
07-16 17:21	20m	- / -	E70SZ	-13 / -	3	Partial capture
07-14 18:33	20m	- / -13	R6SS	-9 / -	3	Partial capture
07-14 18:30	20m	- / -13	EC6DX	-4 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
181845  -4  993  JA0DBQ PI4DX -13 (x2)

80m

UTC    dB Audio  Message
190630  +1 2387  JA0DBQ UX1AA KO70 (x9)
184145 +16  443  JA0DBQ DJ7M JN49 (x6)

20m

UTC    dB Audio  Message
172100 -18 1653  JA0DBQ E70SZ JN84 (x3)
173815 -11 2494  JA0DBQ MI0JZZ -24 (x3)
124900 -14 2379  JA0DBQ <...> -21
195415 -11 2390  JA0DBQ F4NGC IN95 (x5)
201600 -20 2017  JA0DBQ 9K2GR RR73
132845 -24 1634  EW2ZC JA0DBQ R+07 (x2)

10m

UTC    dB Audio  Message
223945  -8 2539  JA0DBQ IZ8NVV -14 (x6)

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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