8S7DL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO76

Receiver-side FT8 activity involving 8S7DL, decoded by SO8OO in southeastern Poland. 5,719 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 32 UTC dates in the available aggregate history. Observed between 2026-07-11 and 2026-08-15.

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 5,719 FT8 messages attributed to 8S7DL as the transmitting token by decoded message structure across 32 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (73%), followed by 60 m (14%) and 40 m (8%). Most decodes (76%) 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 (81%); the estimated median was 0 dB.

Overview

5,719

Messages attributed

UTC dates decoded

418

Active 15-min windows

0 dB

Estimated median S/N

Bands

80m · 4,157 60m · 823 40m · 454 20m · 285

First attributed message: 2026-07-11
Last attributed message: 2026-08-15 14:41 UTC

Observed FT8 message patterns

Attributed sample: 5,719 messages
Active dates: 32 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -15 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 480, moderate (-15 to -9 dB) 627, strong (≥ -8 dB) 4,612.

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 8S7DL in decoded directed-looking exchanges:

RN6MA · European Russia ×4 R5AV · European Russia ×4 SP9UPH · Poland ×4 PA3FPQ · Netherlands ×4 DL3MIB · Fed. Rep. of Germany ×3 9A4ZM · Croatia ×3 I1RJP · Italy ×3 IQ4JO · Italy ×3 OE6TNO · Austria ×3 RK4CH · European Russia ×3 DF8AA · Fed. Rep. of Germany ×3 DL1NEO · Fed. Rep. of Germany ×3

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 8S7DL

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: JO76 · 3,632 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 858 km (approx.)
Last such locator decoded: 2026-08-11 17:07 UTC

Other locator fields attributed to this token: JO53 (2).

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	8S7DL S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-15 14:37	40m	-15 / -	PD2MAC/P	- / -10	4	Partial capture
08-15 14:33	40m	-14 / -	OZ4HAM	- / -	2	Partial capture
08-15 14:32	40m	- / +2	OZ9FF	-14 / -	2	✓ Closing fragment
08-11 18:15	40m	- / -	DK5AL	-12 / -	3	Partial capture
08-11 17:20	40m	- / -	US6CQ	-3 / -	2	Partial capture
08-11 11:47	20m	- / -10	G0GHL	-14 / -	7	Partial capture
08-11 11:42	20m	- / +5	DL9IQ	-9 / -	3	✓ Closing fragment
08-11 11:23	20m	- / -10	DH3MFW	-5 / -	3	Partial capture
08-11 11:16	20m	- / -	R3TY	-15 / -	2	Partial capture
08-11 11:15	20m	- / -	DG1PO	-7 / -	2	Partial capture
08-11 11:12	20m	- / -	DF7EE	-22 / -	3	Partial capture
08-11 11:08	20m	- / -9	DH1FA	-18 / -	2	✓ Closing fragment
08-11 11:05	20m	- / -	DB1SN	-12 / -	2	✓ Closing fragment
08-11 11:05	20m	- / -	R3TY	-12 / -	3	Partial capture
08-11 11:04	20m	- / -	DG1PO	0 / -	2	Partial capture
08-11 11:02	20m	- / -	DF7EE	-24 / -	3	Partial capture
08-11 10:58	20m	- / -	IK4LZH	+4 / -	4	Partial capture
08-11 10:54	20m	- / -	PE1NPS	-15 / -	3	Partial capture
08-11 10:54	20m	- / -	RL3K	-14 / -	2	Partial capture
08-11 10:47	20m	- / -	IK4LZH	0 / -	4	Partial capture
08-11 10:37	20m	- / -	F4BYA/P	-18 / -	5	Partial capture
08-11 10:29	20m	- / -3	YO6RK	-18 / -	2	Partial capture
08-11 10:27	20m	- / -	DL8YBL	-14 / -	3	Partial capture
08-11 10:22	20m	-18 / -	R3TY	-16 / 0	4	Partial capture
08-11 10:19	20m	- / -	IK4LZH	+4 / -	3	Partial capture
08-11 10:14	20m	- / +1	HA1BF	-14 / -	3	✓ Closing fragment
08-11 05:29	40m	- / -	DL7UHD	-8 / -	3	Partial capture
08-11 05:23	40m	- / -	HB9CEX	-20 / -	2	Partial capture
08-11 05:22	40m	- / -	UX7QV	-16 / -	6	Partial capture
08-11 05:22	40m	- / -	DL7UHD	-14 / -	5	Partial capture
08-11 05:03	40m	- / -12	DC1KN	-20 / -	2	Partial capture
08-11 04:25	60m	- / -	PA3GDL	-6 / -	2	Partial capture
08-10 21:04	80m	- / -	G4YKQ	-3 / -	2	Partial capture
08-10 21:03	80m	- / -	ON4MAP	-9 / -	5	Partial capture
08-10 21:03	80m	- / -	YT5DL	+12 / -	5	Partial capture
08-10 20:50	80m	- / -12	DM1HR	-10 / -	5	Partial capture
08-10 20:49	80m	-2 / +1	OZ1KZX	+13 / +5	4	✓ Full exchange observed
08-10 20:48	60m	-1 / -	EA4GA	- / -	2	Partial capture
08-10 20:47	60m	- / -	F4GEY	-8 / -	2	Partial capture
08-10 20:43	60m	-2 / -	LB9ZG	- / -	7	Partial capture
08-10 20:23	60m	-4 / -1	OZ0A	-1 / 0	6	✓ Full exchange observed
08-10 20:21	60m	-4 / -3	IK0TUM	-13 / -15	6	✓ Full exchange observed
08-10 19:45	60m	-2 / -	ON7PM	- / -9	3	✓ Closing fragment
08-10 19:42	60m	-5 / -	OO0O	- / -	6	Partial capture
08-10 19:40	60m	-4 / +8	OZ7FOC	-8 / +1	5	✓ Full exchange observed
08-10 19:39	60m	-5 / -	OM1AGE/P	- / -2	3	✓ Closing fragment
08-10 19:39	60m	- / -	DJ2KP	+10 / -	6	Partial capture
08-10 19:31	40m	- / -9	HB10GBT	-19 / -	2	Partial capture
08-10 19:30	80m	- / -	PA3MVD	-12 / -	3	Partial capture
08-10 19:29	80m	- / -	DL8NW	+4 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
172545 -15 2438  8S7DL PE1NPS JO22
173345  -2  691  8S7DL SQ7OBH JO91
180315 -18 1285  8S7DL SQ3POU JO72
181500 -11 1972  8S7DL DK5AL JO51 (x3)
143230 -13 2313  8S7DL OZ9FF +02 (x2)
143330 -13 1038  8S7DL SP6AMI -13
143345 -15 1039  OZ4HAM 8S7DL JO53 (x2)
143745 -15 1038  PD2MAC/P 8S7DL (x4)

80m

UTC    dB Audio  Message
205200 -10 1605  8S7DL DM1HR -12
210330  +3 1003  CQ 8S7DL JO76
210345 +11 1004  8S7DL YT5DL KN04
210345  -9  374  8S7DL ON4MAP JO20
210415 +11 1004  8S7DL YT5DL KN04
210415 -10  374  8S7DL ON4MAP JO20
210415  -4 2817  8S7DL G4YKQ IO91
210445 +12 1004  8S7DL YT5DL KN04
210445 -11  374  8S7DL ON4MAP JO20
210445  -2 2817  8S7DL G4YKQ IO91
210515  +9 1004  8S7DL YT5DL KN04
210515 -12  374  8S7DL ON4MAP JO20
210545 +15 1004  8S7DL YT5DL KN04
210545  -5  374  8S7DL ON4MAP JO20
161430 -17 1004  CQ 8S7DL JO76

60m

UTC    dB Audio  Message
204500  -2 1033  LB9ZG 8S7DL JO76 (x4)
204700  -1 1032  CQ 8S7DL JO76
204715  -6 1933  8S7DL F5HNQ IN98
204730  -1 1032  CQ 8S7DL JO76
204745  -6 1302  8S7DL F4GEY JO10
204800  -1 1032  EA4GA 8S7DL JO76
204815  -9 1302  8S7DL F4GEY JO10
204830  -1 1032  EA4GA 8S7DL JO76
042245  -8 1033  CQ 8S7DL JO76                         a1
042530  -7 1563  8S7DL PA3GDL JO22 (x2)
161400  -8 1033  CQ 8S7DL JO76

20m

UTC    dB Audio  Message
112415  -5  623  8S7DL DH3MFW JN58 (x2)
113115 -13 2270  8S7DL F5HNQ IN98
113345 -16 2426  8S7DL PE1NPS JO22
114215  -7 2319  8S7DL G0GHL IO82
114215 -11  327  8S7DL DL9IQ JO40 (x3)
114745 -11 2319  8S7DL G0GHL IO82 (x7)

10m

UTC    dB Audio  Message
170615  -2 1093  8S7DL DH1GKS 73
171215 -22 1138  8S7DL IZ8PFD JN70 (x4)
174545  -6 1269  8S7DL LZ1ZF RR73
130845  +3 2679  8S7DL F1PBZ -02
201845  -7 1090  8S7DL EA8UP -13 (x3)
202015 -11 2284  8S7DL CR7BXA -15 (x5)

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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