SM/DB9LG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden

Receiver-side FT8 activity involving SM/DB9LG, decoded by SO8OO in southeastern Poland. 624 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-09-06 and 2026-09-15.

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 624 FT8 messages attributed to SM/DB9LG as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (74%), followed by 80 m (26%). Most decodes (83%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -5 dB.

Overview

624

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 163 40m · 461

First attributed message: 2026-09-06
Last attributed message: 2026-09-15 06:59 UTC

Observed FT8 message patterns

Attributed sample: 624 messages
Active dates: 8 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -11.4 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 141, strong (≥ -8 dB) 470.

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 SM/DB9LG in decoded directed-looking exchanges:

Z335MK · North Macedonia ×4 OZ13JK · Denmark ×3 SX48JM · Greece ×3 HF780C · Poland ×2 5Z4VJ · Kenya ×2 AO77R · Spain DG4LXM · Fed. Rep. of Germany HA3HZ · Hungary JY5IB · Jordan K2ZJ · United States LY790A · Lithuania OM2BK · Slovak Republic

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.

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	SM/DB9LG S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 11:24	40m	- / -	<...>	-20 / -	2	✓ Closing fragment
09-15 18:56	80m	- / -	IK5ZTT	-4 / -	2	Partial capture
09-15 16:05	40m	- / -14	UR3CFC	+9 / -	2	Partial capture
09-15 16:04	40m	- / +1	YO8BDQ	+2 / -	2	Partial capture
09-15 15:47	40m	- / +5	DL2LMS	+1 / -	2	Partial capture
09-15 12:58	40m	- / +2	DG4LXM	+1 / -	3	✓ Closing fragment
09-15 06:37	40m	- / -	DG0KT	-10 / -	3	Partial capture
09-15 06:18	40m	- / -12	DL6IAN	+5 / -	4	Partial capture
09-15 06:03	40m	- / -10	DL5ARM	+6 / -	3	Partial capture
09-15 05:18	40m	-8 / -8	PA3CPS	+12 / -6	3	Partial capture
09-15 05:17	40m	+3 / -	SX48JM	-5 / -	4	✓ Closing observed
09-15 05:13	40m	-6 / -	F8MRQ	-8 / -13	4	Partial capture
09-15 04:59	40m	- / -	SX48JM	-2 / -	2	✓ Closing fragment
09-15 04:47	40m	-7 / -	RC3DN	- / -16	2	Partial capture
09-15 03:23	80m	- / -	DO5HOK	-7 / -	2	Partial capture
09-15 03:06	80m	- / -	DO5HOK	-2 / -	4	Partial capture
09-15 01:55	40m	- / -15	RA6ABC	+15 / -	2	Partial capture
09-14 23:30	40m	- / -10	EA5JAH	-2 / -	2	Partial capture
09-14 21:47	80m	- / -5	YO6LM	+10 / -	4	Partial capture
09-14 21:47	40m	- / -9	PA4B	-4 / -	3	Partial capture
09-14 21:47	80m	0 / -	<...>	- / -	2	Partial capture
09-14 21:30	80m	+4 / -	<...>	-1 / -	2	✓ Closing fragment
09-14 21:26	80m	- / -	OH6NIO	+7 / -	2	Partial capture
09-14 21:24	80m	+5 / -	9A3AUH	- / -	5	Partial capture
09-14 21:22	80m	+7 / -	<...>	- / -	2	Partial capture
09-14 21:20	80m	+2 / -	Z335MK	- / -	3	Partial capture
09-14 21:18	80m	- / -8	ON4MAP	-10 / -	2	Partial capture
09-14 21:17	80m	-2 / -	9A3AUH	- / -	5	Partial capture
09-14 21:15	80m	-2 / -	ON4MAP	- / -5	2	Partial capture
09-14 21:14	80m	-6 / -	<...>	-8 / -	4	✓ Closing fragment
09-14 21:09	80m	-7 / -	<...>	+13 / -	2	✓ Closing fragment
09-14 21:08	80m	-8 / -	DO5OT	+21 / +2	3	Partial capture
09-14 21:01	80m	-5 / -	MM0VIK	- / -	9	Partial capture
09-14 20:51	80m	- / -8	YO6LM	+1 / -	3	Partial capture
09-14 20:45	80m	-6 / -	DA6BR	- / -8	2	Partial capture
09-14 20:43	80m	-5 / -	<...>	-3 / -	15	✓ Closing fragment
09-14 20:41	80m	-9 / -	UA4FKT	- / -5	3	Partial capture
09-14 20:38	80m	-8 / -	HB3YOR	- / -8	2	Partial capture
09-14 20:36	80m	-13 / -	<...>	+14 / -	5	✓ Closing fragment
09-14 20:35	80m	-15 / -4	SP5HQZ	+16 / -1	6	Partial capture
09-14 20:15	40m	-4 / -	<...>	- / -	4	Partial capture
09-14 20:13	40m	-8 / -	9K2RT	- / -	4	Partial capture
09-14 20:06	40m	-4 / -	<...>	- / -	6	Partial capture
09-14 19:27	40m	-9 / -	HB9ZHK	- / -9	4	Partial capture
09-14 19:24	40m	-3 / -	HS0ZOY	- / -	4	Partial capture
09-14 19:21	40m	- / -	S51PV	-1 / -	2	Partial capture
09-14 19:20	40m	+1 / -	<...>	-10 / -	6	✓ Closing fragment
09-14 19:16	40m	0 / -	UN7PPV	- / -9	4	Partial capture
09-14 19:11	40m	+8 / -	<...>	-4 / -	2	✓ Closing fragment
09-14 19:11	40m	+2 / -16	SP4MPH	-5 / +2	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
074945  -4  786  SM/DB9LG HA2JL -13
125830  -5  340  SM/DB9LG DG4LXM (x3)
135330 +18  734  SM/DB9LG UR3CFC +08
154715  +4 2392  SM/DB9LG DL2LMS JO61 (x2)
160415  +0 2394  SM/DB9LG YO8BDQ KN27 (x2)
160515 +10  730  SM/DB9LG UR3CFC -14 (x2)
160845  -3 2394  SM/DB9LG YO8BDQ KN27
183530  +8  386  SM/DB9LG DL1JEL JO60
112415 -21 1764  SM/DB9LG <...> RR73 (x2)

80m

UTC    dB Audio  Message
022745  +9  415  SM/DB9LG DF2NV -06
030615  -4  809  SM/DB9LG DO5HOK JO41 (x6)
171115  -9 2873  SM/DB9LG R2XM KO84
181315 +12  806  SM/DB9LG SP3BVI JO82
181615  -7 2460  SM/DB9LG RW1AI KO59
183445 +12  809  SM/DB9LG SP3IPA +03
185615  -1 2862  SM/DB9LG IK5ZTT JN53 (x2)
210645  -9  579  SM/DB9LG DA6HU JN59 (x2)

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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