SE7LH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO66

Receiver-side FT8 activity involving SE7LH, decoded by SO8OO in southeastern Poland. 1,482 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-13 and 2026-08-16.

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 1,482 FT8 messages attributed to SE7LH as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (51%), followed by 60 m (42%) and 40 m (6%). Most decodes (87%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -4 dB.

Overview

1,482

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 759 60m · 629 40m · 86 10m · 8

First attributed message: 2026-08-13
Last attributed message: 2026-08-16 22:02 UTC

Observed FT8 message patterns

Attributed sample: 1,482 messages
Active dates: 4 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -13 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 73, moderate (-15 to -9 dB) 327, strong (≥ -8 dB) 1,082.

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 SE7LH in decoded directed-looking exchanges:

GB8VJ · England ×4 DG4BZ · Fed. Rep. of Germany ×4 CT7AUT · Portugal ×4 DG5PW · Fed. Rep. of Germany ×4 G3RPF · England ×3 DL1UDO · Fed. Rep. of Germany ×3 IK6DLK · Italy ×3 PI4DX · Netherlands ×3 DL5BTE · Fed. Rep. of Germany ×3 S55P · Slovenia ×2 US2YW · Ukraine ×2 G4MQL · England ×2

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to SE7LH

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: JO66 · 415 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 934 km (approx.)
Last such locator decoded: 2026-08-16 02:29 UTC

Other locator fields attributed to this token: JO65 (328).

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	SE7LH S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-16 22:01	80m	-1 / -	DL1HDL	- / -	2	Partial capture
08-16 22:00	80m	-4 / -	UN0GY	- / -	2	Partial capture
08-16 21:57	80m	- / -8	DO5HOK	0 / -	2	✓ Closing fragment
08-16 21:57	80m	-6 / -	YU5DR	+8 / -	3	✓ Closing observed
08-16 21:50	80m	+4 / -	DL1HDL	- / -	4	Partial capture
08-16 21:48	80m	+1 / +2	R2FDU	-4 / +3	5	✓ Full exchange observed
08-16 21:44	80m	+1 / -4	HA7TM	+9 / -4	5	✓ Full exchange observed
08-16 21:42	80m	+1 / -2	SP9UOP	+12 / +2	5	✓ Full exchange observed
08-16 21:41	80m	-2 / -	DL1HDL	- / -	3	Partial capture
08-16 21:35	60m	- / -	SP6EFY	+4 / -	11	Partial capture
08-16 21:34	60m	-2 / -	DL7ARV	-8 / -4	4	✓ Full exchange observed
08-16 21:32	60m	-2 / -4	SP5IPO	-10 / -	3	✓ Closing observed
08-16 21:31	60m	-2 / +5	PC2J	-4 / +1	5	✓ Full exchange observed
08-16 21:30	40m	-12 / -	UT6HN	-5 / -	3	✓ Closing observed
08-16 21:26	40m	-16 / -	UN8PC	- / -2	5	✓ Closing fragment
08-16 17:19	60m	-11 / -	LY8O	- / -	3	Partial capture
08-16 17:17	60m	-9 / -	DH5NC	- / -6	3	Partial capture
08-16 17:16	60m	-13 / +5	OZ9FF	-5 / +5	4	✓ Full exchange observed
08-16 17:14	60m	-10 / -	PD1GOL	- / -	3	Partial capture
08-16 17:03	40m	-18 / -2	SP4TKA	-8 / +2	4	✓ Full exchange observed
08-16 17:02	40m	-18 / -	EW8DG	- / -7	2	Partial capture
08-16 16:55	40m	-20 / -	DA0LH	-15 / -	2	✓ Closing observed
08-16 16:51	40m	-15 / -5	<...>	-18 / +3	2	Partial capture
08-16 16:46	40m	- / -11	IK0BAL	-13 / -	2	✓ Closing fragment
08-16 15:53	20m	- / -13	EU4U	-7 / -	2	✓ Closing fragment
08-16 11:54	10m	-7 / -	RN3YN	- / -26	7	✓ Closing fragment
08-16 10:33	20m	- / -	DK4BP	-17 / -	4	Partial capture
08-16 10:33	20m	- / -10	OE4RGC	-10 / -	3	Partial capture
08-16 10:03	20m	- / -	EB3JT	-17 / -	3	Partial capture
08-16 10:02	20m	- / -10	OK1DVN	-15 / -	3	✓ Closing fragment
08-16 10:00	20m	- / +2	DL5NTA	-2 / -	4	✓ Closing fragment
08-16 09:52	20m	- / -7	R5AV	-4 / -	2	✓ Closing fragment
08-16 09:39	10m	- / -	IZ2CPP	-8 / -	3	✓ Closing fragment
08-16 09:19	10m	- / +6	DF6NL	-12 / -	3	✓ Closing fragment
08-16 09:05	10m	- / -18	EA3EDU	-18 / -	2	✓ Closing fragment
08-16 08:56	10m	- / -18	IN3IZQ	-8 / -	2	✓ Closing fragment
08-16 08:49	10m	- / 0	DL3NGN	-14 / -	3	✓ Closing fragment
08-16 08:49	40m	- / -19	DL3MIB	-16 / -	2	Partial capture
08-16 08:46	10m	- / -13	M0BEW	-11 / -	2	✓ Closing fragment
08-16 08:13	40m	- / -4	SQ9LOJ	-6 / -	5	✓ Closing fragment
08-16 08:10	40m	- / -	DL3MIB	-16 / -	2	Partial capture
08-16 08:06	10m	- / -5	DN9OPA	-4 / -	2	Partial capture
08-16 02:25	60m	-10 / -	HI8CJG	- / -	9	Partial capture
08-15 23:20	80m	0 / -19	S55P	+8 / -5	4	✓ Full exchange observed
08-15 23:14	80m	- / -11	GI4DOH	+6 / -	2	✓ Closing fragment
08-15 22:55	80m	- / -4	OU7M	+4 / -	2	✓ Closing fragment
08-15 22:53	80m	-9 / +5	DL1UDO	-2 / -	3	✓ Closing observed
08-15 22:46	60m	-12 / -	EA5FD	- / -4	2	✓ Closing fragment
08-15 22:46	80m	+6 / -13	R50RKZ	-12 / -5	4	✓ Full exchange observed
08-15 22:42	60m	-11 / -	CE2SV	- / -	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
214945  -4 1142  R2FDU SE7LH 73
215045  +1 1141  DL1HDL SE7LH JO65 (x4)
215445  +8 1141  A93MO SE7LH JO65
215700  -6 1142  YU5DR SE7LH JO65
215715  -1  808  SE7LH DO5HOK -08 (x2)
215815  +8 1796  SE7LH YU5DR RR73
215830  -6 1142  YU5DR SE7LH 73
220000  +0 1142  UN0GY SE7LH JO65 (x2)
220145  -1 1142  DL1HDL SE7LH JO65 (x2)

60m

UTC    dB Audio  Message
213445  -4 1269  SE7LH DL7ARV 73
213500  -3 1171  CQ SE7LH JO65
213515  +1 1170  SE7LH SP6EFY JO72
213530  -4 1171  CQ SE7LH JO65
213545  +3 1171  SE7LH SP6EFY JO72
213600  -2 1171  CQ SE7LH JO65
213615  +4 1170  SE7LH SP6EFY JO72 (x9)

40m

UTC    dB Audio  Message
170345  -9  483  SE7LH SP4TKA KO14
170500 -18 1177  SP4TKA SE7LH +02
170515  -8  483  SE7LH SP4TKA R-02 (x2)
170630 -15 1177  DL1ESZ SE7LH -13
170645 -13  595  SE7LH OZ2LC RR73
212545 -12 1177  VJ6X SE7LH JO65
212615 -12 1177  UN8PC SE7LH JO65 (x5)
213000 -11 1177  UT6HN SE7LH JO65 (x2)
213115  -5  791  SE7LH UT6HN RR73

20m

UTC    dB Audio  Message
100200 -11 1559  SE7LH OK1DVN JN79 (x2)
100300 -16 1367  SE7LH EB3JT JN01
100300 -16 1560  SE7LH OK1DVN 73
100400 -14 1368  SE7LH EB3JT JN01 (x2)
103300  -6 2142  SE7LH OE4RGC JN87
103300 -11 2000  SE7LH DK4BP JN58 (x2)
103330  -8 2142  SE7LH OE4RGC JN87
103400 -15 1999  SE7LH DK4BP JN58
103430 -15 2142  SE7LH OE4RGC R-10
103530 -22 1999  SE7LH DK4BP JN58
155345  -8 2748  SE7LH EU4U -13 (x2)

10m

UTC    dB Audio  Message
093930  -8 1236  SE7LH IZ2CPP JN45 (x3)
094800 -24 1690  SE7LH HB9AKB RR73
105730  -5 2735  SE7LH UA3ZUX -04
112915 -14 1419  SE7LH SV2FNT RR73
113430 -20 1293  SE7LH LZ7VV RR73
113915 -18 1234  RA3ZH SE7LH -12
115415  -3 1233  RN3YN SE7LH JO65 (x7)

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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