JA7AUM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan

Receiver-side FT8 activity involving JA7AUM, decoded by SO8OO in southeastern Poland. 58 related FT8 messages, observed on 80m, 40m, 20m, across 8 UTC dates. Heard between 2026-05-20 and 2026-08-18.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

Related messages

CQ messages

UTC dates heard

-11 dB

Mean decoder S/N

Bands

80m 20m 40m

First seen: 2026-05-20
Last seen: 2026-08-18 18:40 UTC

Frequent QSO partners observed at SO8OO

Stations JA7AUM worked most often, as logged from our receiver:

HB9CZF · Switzerland ×2 ER3UA · Moldova UF5F · European Russia IU4PPL · Italy YT7DX · Serbia OE3OBB · Austria YO4DW · Romania EA5RT · Spain YU7VK · Serbia ON4ASV · Belgium YO8PS · Romania E77FN · Bosnia-Herzegovina

Activity Heatmap

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	JA7AUM S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-18 20:40	80m	- / -12	R6KX	-2 / -	2	Partial capture
08-13 20:41	20m	- / -	EA5FQ	-12 / -	3	Partial capture
08-13 20:41	20m	- / -14	EA5RT	-15 / -	4	✓ Closing fragment
08-13 20:40	20m	- / +3	IU4PPL	-20 / -	2	✓ Closing fragment
08-13 20:37	20m	- / -17	E77FN	-16 / -	2	✓ Closing fragment
08-13 20:37	20m	- / -2	ON7VZ	-11 / -	3	✓ Closing fragment
08-04 20:22	40m	- / -15	HB9CZF	-8 / -	2	✓ Closing fragment
08-04 18:26	40m	- / -4	UF5F	-12 / -	2	✓ Closing fragment
08-04 18:23	40m	- / -14	YU7VK	-10 / -	3	✓ Closing fragment
08-04 18:21	40m	- / -15	ON4ASV	-6 / -	2	✓ Closing fragment
08-04 18:21	40m	- / -	R3IAD	-14 / -	2	Partial capture
08-04 18:17	40m	- / -8	ER3UA	-4 / -	2	✓ Closing fragment
08-04 18:15	40m	- / -20	IS0GQX	-23 / -	2	Partial capture
08-04 18:08	40m	- / -4	YT7DX	0 / -	2	✓ Closing fragment
08-04 18:05	40m	- / -	OM5ALL	-12 / -	5	Partial capture
08-04 18:04	40m	- / -20	OE3OBB	-12 / -	2	✓ Closing fragment
08-04 17:57	40m	- / -	YO4DW	-10 / -	2	✓ Closing fragment
08-01 04:29	20m	- / -4	NE5TX	-13 / -	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
194900 -13 1809  JA7AUM UN8DSW -05
195000  +9 2744  JA7AUM R3BDQ -17
204015  -2 2513  JA7AUM R6KX -12 (x2)

20m

UTC    dB Audio  Message
203730 -17 1385  JA7AUM E77FN R-17
203730  -4  909  JA7AUM ON7VZ -02 (x2)
203800 -14 1385  JA7AUM E77FN 73
203900 -16  909  JA7AUM ON7VZ RR73
204000 -19 1437  JA7AUM IU4PPL R+03 (x2)
204100 -21 1568  JA7AUM EA5RT JN00
204130 -14 1018  JA7AUM EA5FQ IM98
204130 -16 1568  JA7AUM EA5RT JN00
204200 -10 1017  JA7AUM EA5FQ IM98
204200 -11 1568  JA7AUM EA5RT R-14 (x2)
204300 -21 2034  JA7AUM PD1ADA R-13
204300 -13 1015  JA7AUM EA5FQ IM98

40m

UTC    dB Audio  Message
181730  -3 2142  JA7AUM ER3UA -08 (x2)
182100  -4 1270  JA7AUM ON4ASV -15
182100 -13 1463  JA7AUM R3IAD KO76 (x2)
182130  -7 1270  JA7AUM ON4ASV RR73
182300 -10 1122  JA7AUM YU7VK -14 (x3)
182600 -13 1580  JA7AUM UF5F R-04 (x2)
202200  -8 1409  JA7AUM HB9CZF -15 (x2)
202930 -11 1299  JA7AUM YO8PS 73
203130 -15 1858  JA7AUM GW8DX -18

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.