DA0UDS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN39

Receiver-side FT8 activity involving DA0UDS, decoded by SO8OO in southeastern Poland. 80 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-11 and 2026-09-17.

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 80 FT8 messages attributed to DA0UDS as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (91%), followed by 20 m (9%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 73 20m · 7

First attributed message: 2026-08-11
Last attributed message: 2026-09-17 19:37 UTC

Observed FT8 message patterns

Attributed sample: 80 messages
Active dates: 4 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -20 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 40.

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 DA0UDS in decoded directed-looking exchanges:

4X1UF · Israel ×2 DK6MR · Fed. Rep. of Germany ×2 SP6FME · Poland ×2 F5LOW · France G0GHL · England G7RES · England UN8DSW · Kazakhstan DB3MAX · Fed. Rep. of Germany DK8HC · Fed. Rep. of Germany DL6EL · Fed. Rep. of Germany DL8TV · Fed. Rep. of Germany EI9KF · Ireland

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 DA0UDS

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: JN39 · 31 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,063 km (approx.)
Last such locator decoded: 2026-09-17 19:33 UTC

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	DA0UDS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 19:52	80m	- / -12	DO1WGK	-11 / -	2	Partial capture
09-17 19:48	80m	- / -12	DO5HOK	-10 / -	2	✓ Closing fragment
09-17 19:36	40m	-8 / -16	RN3YN	-5 / -7	6	✓ Full exchange observed
09-17 19:34	40m	-8 / -17	IU8RFW	-10 / -4	5	✓ Full exchange observed
09-17 19:32	40m	-7 / -	ES1MVM	- / -17	4	✓ Closing fragment
09-17 19:23	40m	-8 / -19	HZ1TT	-8 / -11	13	✓ Full exchange observed
09-03 20:15	40m	- / -12	F5HNQ	0 / -	3	✓ Closing fragment
08-25 20:11	40m	0 / -	DL/AD2LX	- / -	2	Partial capture
08-25 20:08	40m	-2 / -	DK6MR	-6 / +2	5	✓ Closing observed
08-25 20:06	40m	-3 / -17	4X1UF	-3 / -10	11	✓ Full exchange observed
08-25 19:33	40m	- / -8	DL50SOL	-6 / -	2	Partial capture
08-25 19:28	40m	-14 / -	UA4FKT	- / -4	3	✓ Closing fragment
08-25 19:26	40m	-10 / -15	YT2FA	-12 / -13	5	✓ Full exchange observed
08-25 19:24	40m	- / -	UA4FKT	+2 / -	2	Partial capture
08-25 19:24	40m	- / -9	DL8TV	+19 / -	5	✓ Closing fragment
08-25 19:23	40m	- / -12	DK8HC	+1 / -	3	✓ Closing fragment
08-20 22:18	40m	-6 / -7	SP6FME	-5 / +2	6	✓ Full exchange observed
08-20 22:15	40m	-8 / -	EN35UKR	- / -14	4	Partial capture
08-20 22:11	40m	- / -5	EN35UKR	+1 / -	3	Partial capture
08-20 22:09	40m	-6 / -3	II7MGXX	-1 / +5	5	Partial capture
08-20 22:08	40m	-6 / -	M7YFL	- / +5	4	Partial capture
08-20 22:06	40m	-10 / -8	YO6LM	-4 / +5	4	✓ Full exchange observed
08-20 22:02	40m	-8 / -	EI9KF	- / +1	3	Partial capture
08-20 22:00	40m	-9 / +3	DB3MAX	-6 / +4	4	✓ Full exchange observed
08-20 21:58	40m	-13 / -	SQ9SET	- / -	3	Partial capture
08-20 21:57	40m	-8 / -19	UR9QQ	+2 / -12	11	✓ Full exchange observed
08-20 21:56	40m	-10 / -	4X1UF	-3 / -9	4	✓ Closing observed
08-11 21:22	40m	-19 / -	Z62NS	- / -	5	Partial capture
08-11 21:07	20m	-21 / -	UN8DSW	- / -7	3	✓ Closing fragment
08-11 21:01	20m	- / -	G0GHL	-10 / -	2	✓ Closing fragment
07-09 18:33	20m	- / -10	F5LOW	-2 / -	2	✓ Closing fragment
07-09 18:32	20m	- / -3	<...>	+4 / -	2	Partial capture
07-09 17:51	40m	- / -6	DL6EL	-12 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
194845 -12  809  DA0UDS DO5HOK -12 (x2)
195145  -7  899  DA0UDS IK3/UY7LA R-12
195245 -13 1301  DA0UDS DO1WGK JN49 (x2)

40m

UTC    dB Audio  Message
193230  -4  881  ES1MVM DA0UDS JN39 (x4)
193415  -8  881  DA0UDS IU8RFW JN70
193430 -10  881  IU8RFW DA0UDS -04
193445  -8  881  DA0UDS IU8RFW R-17
193500  -6  881  IU8RFW DA0UDS RR73
193515 -14  881  DA0UDS IU8RFW 73
193600  -6  690  DA0UDS RN3YN -16
193615 -12  881  RN3YN DA0UDS R-07
193630  -5  689  DA0UDS RN3YN RR73
193645  -4  881  RN3YN DA0UDS R-07
193700  -5  689  DA0UDS RN3YN RR73
193715  -7  881  RN3YN DA0UDS 73

20m

UTC    dB Audio  Message
183300  +5  476  DA0UDS <...> -03
183315  -2 1561  DA0UDS F5LOW -10 (x2)
205630 -24 1646  G7RES DA0UDS 73
210045 -15 1646  CQ DA0UDS JN39
210100  -3 2380  DA0UDS IQ4JO JN63
210100 -14 2273  DA0UDS G0GHL IO82 (x2)
210745 -24 1646  UN8DSW DA0UDS JN39
210815 -22 1647  R6YG DA0UDS JN39
210915 -21 1646  UN8DSW DA0UDS R-07 (x2)
211445 -22 1646  HL2CFY DA0UDS JN39
222145 -22 1798  DA0UDS AD9GE -19
164500  -3 2254  DA0UDS RR73; OE5ROR <...> -08

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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