DB1SME — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany

Receiver-side FT8 activity involving DB1SME, decoded by SO8OO in southeastern Poland. 183 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-08-22.

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 183 FT8 messages attributed to DB1SME as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (64%), followed by 10 m (36%). Several six-hour UTC windows tied for the largest share (64%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -3 dB.

Overview

183

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

20m · 118 10m · 65

First attributed message: 2026-06-12
Last attributed message: 2026-08-22 18:43 UTC

Observed FT8 message patterns

Attributed sample: 183 messages
Active dates: 4 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -14 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 39, strong (≥ -8 dB) 133.

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 DB1SME in decoded directed-looking exchanges:

9A5E · Croatia 9K2GR · Kuwait DH1FA · Fed. Rep. of Germany DL1BKX · Fed. Rep. of Germany DL1UDO · Fed. Rep. of Germany EA1N · Spain IU8UHK · Italy KW3DX · United States M9LCD · England N1HMT · United States PD4DX · Netherlands RA6AR · European Russia

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	DB1SME S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 18:42	20m	-16 / -	SM7SPG	- / -9	3	✓ Closing fragment
08-22 18:38	20m	-6 / -	M9LCD	- / +1	4	✓ Closing fragment
08-22 18:26	20m	-4 / -	SA7CHI	- / -10	5	✓ Closing fragment
08-21 21:31	20m	+2 / -14	EA1N	+2 / -9	6	✓ Full exchange observed
08-21 21:25	20m	+1 / -	PY7XC	- / -8	2	Partial capture
08-21 21:23	20m	-1 / 0	PD4DX	+5 / -1	8	✓ Full exchange observed
08-21 21:19	20m	-1 / -	<...>	- / -9	3	Partial capture
08-21 21:17	20m	-1 / -	EA5JXP	- / -20	5	Partial capture
08-21 21:14	20m	-4 / -7	DH1FA	+6 / -14	4	✓ Full exchange observed
08-21 21:11	20m	-1 / -	DL1UDO	-13 / +2	4	✓ Closing observed
08-21 21:09	20m	0 / -	OZ7CL	- / -11	3	Partial capture
08-21 21:07	20m	0 / -	DB3EH	- / -10	5	Partial capture
08-21 21:03	20m	+3 / -2	YU7TMR	-12 / -1	5	✓ Full exchange observed
08-21 21:01	20m	0 / -	DL1BKX	- / +5	4	✓ Closing fragment
08-21 20:59	20m	- / -4	N1HMT	-4 / -	2	✓ Closing fragment
08-21 20:56	20m	-2 / -	N3FMC	- / -6	2	Partial capture
08-21 20:50	20m	0 / 0	KW3DX	-8 / -5	7	✓ Full exchange observed
08-21 20:47	20m	-2 / -	AA6RE	- / -11	4	Partial capture
08-21 20:46	20m	0 / -	<...>	- / -10	2	Partial capture
08-21 20:42	20m	+1 / -	KW3DX	- / -10	7	Partial capture
08-21 20:37	20m	+2 / -	KZ2I	- / 0	10	Partial capture
08-21 20:34	20m	+1 / -	SM6BWH	- / -7	3	✓ Closing fragment
08-21 20:25	20m	0 / -	TA2EE	- / -9	2	✓ Closing fragment
08-21 20:20	20m	- / +8	OE6TXW	-3 / -	2	Partial capture
08-21 20:15	20m	+1 / -4	9K2GR	+6 / -2	4	✓ Full exchange observed
08-21 20:00	20m	-4 / -	SP6AXW	- / -10	2	✓ Closing fragment
08-21 19:55	20m	0 / -16	<...>	-18 / -3	3	Partial capture
07-15 21:33	20m	-10 / -5	RX7T	-10 / -15	3	Partial capture
07-15 21:31	20m	-12 / -	RA6AR	- / -10	6	✓ Closing fragment
07-15 21:28	20m	-15 / -	EA5BLP	- / -6	3	Partial capture
07-15 21:24	20m	-13 / -	UN0GY	-8 / -11	2	✓ Closing observed
07-15 21:17	20m	-12 / -	SP5KG	- / -1	3	✓ Closing fragment
07-15 21:12	20m	-14 / -	TN8GD	- / -12	2	✓ Closing fragment
07-15 21:04	20m	-12 / -	SP6FME	- / -5	2	✓ Closing fragment
07-15 21:02	20m	-14 / -	IU8UHK	- / -8	3	✓ Closing fragment
07-15 21:01	20m	-8 / -	UN0GY	- / -10	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
213245  +1 1513  DB1SME EA1N R-14
213300  +3 2269  EA1N DB1SME RR73
213315  +2 1513  DB1SME EA1N 73
182615 -14 2272  SA7CHI DB1SME -10 (x5)
183815  -7 2115  M9LCD DB1SME +01 (x4)
184230 -24 2114  SM7SPG DB1SME -09 (x3)

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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