DK3DUA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO61

Receiver-side FT8 activity involving DK3DUA, decoded by SO8OO in southeastern Poland. 485 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 43 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-18.

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 485 FT8 messages attributed to DK3DUA as the transmitting token by decoded message structure across 43 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (75%), followed by 20 m (10%) and 60 m (8%). The busiest six-hour window was 04:00-10:00 UTC, containing 46% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was 0 dB.

Overview

485

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

80m · 35 60m · 40 40m · 362 20m · 48

First attributed message: 2026-06-10
Last attributed message: 2026-09-18 17:41 UTC

Observed FT8 message patterns

Attributed sample: 485 messages
Active dates: 43 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -12 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 80, strong (≥ -8 dB) 388.

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 DK3DUA in decoded directed-looking exchanges:

Z68PX · Republic of Kosovo ×2 E75FM · Bosnia-Herzegovina 8B81JB · Indonesia WC5WC · United States 4O7CC · Montenegro D44TWO · Cape Verde DA1ST · Fed. Rep. of Germany DC1SN · Fed. Rep. of Germany DG6ITP · Fed. Rep. of Germany DK4RH · Fed. Rep. of Germany DL1YEG · Fed. Rep. of Germany DL2FAG · Fed. Rep. of Germany

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 DK3DUA

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: JO61 · 334 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 642 km (approx.)
Last such locator decoded: 2026-09-18 17:41 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	DK3DUA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 17:40	80m	+17 / -	4X1UF	- / -	3	Partial capture
09-17 17:25	80m	- / +9	DK7ZT	+1 / -	5	Partial capture
09-17 17:24	80m	+10 / -	EU4BE	-14 / -17	3	✓ Closing observed
09-16 15:58	40m	+14 / -	GD4VBA	- / -30	5	Partial capture
09-16 15:55	40m	- / -9	UA4FEN	-1 / -	3	Partial capture
09-16 15:53	40m	+13 / -	GD4VBA	- / -18	5	✓ Closing fragment
09-14 06:00	40m	- / -	LZ2VQ	-5 / -	2	Partial capture
09-14 05:59	40m	+16 / -	RV3QI	- / -15	2	✓ Closing fragment
09-14 05:58	40m	+15 / -	EC3A	- / -13	2	✓ Closing fragment
09-14 05:57	40m	+14 / -	SP5EXA	- / +1	2	✓ Closing fragment
09-14 05:41	40m	+6 / -	DJ0MAB	-3 / +4	6	Partial capture
09-14 05:41	40m	+2 / +1	HG8LXL	-2 / -9	5	✓ Full exchange observed
09-14 05:38	40m	+6 / -	D44TWO	- / -15	5	✓ Closing fragment
09-14 05:36	40m	+4 / -	II4IANT	- / -6	3	Partial capture
09-14 05:35	40m	+4 / -	D44TWO	- / -	2	Partial capture
09-09 05:52	40m	0 / -	ZL1RPC/F	- / -	2	Partial capture
09-08 15:28	40m	+13 / -	Z68PX	- / -17	3	✓ Closing fragment
09-06 19:43	60m	+8 / +1	SP8BJU	+12 / -1	4	✓ Full exchange observed
09-06 19:40	60m	+14 / -	Z68PX	-4 / -13	8	✓ Full exchange observed
09-02 18:30	80m	+6 / -	ZS1J	- / -	3	Partial capture
09-02 18:27	80m	+9 / -	ZS1J	- / -	2	Partial capture
09-02 17:12	80m	+8 / -	UN7LAN	- / -	5	Partial capture
08-31 17:40	40m	- / -	DL9KM	-3 / -	6	Partial capture
08-31 17:38	40m	+18 / -	RI1FJL	- / -16	4	✓ Closing fragment
08-29 19:32	60m	+14 / +8	ER1CW	-6 / -8	5	✓ Full exchange observed
08-29 19:29	60m	+12 / -	EW1P	- / -	5	Partial capture
08-22 14:10	40m	+7 / -	OH2DJY	- / -7	2	Partial capture
08-20 18:41	20m	- / -	8B81JB	-10 / -	3	✓ Closing fragment
08-20 18:41	20m	- / -	DK9IP	+3 / -	4	Partial capture
08-20 18:38	20m	+13 / -3	<...>	-11 / -5	10	Partial capture
08-19 14:18	20m	0 / -	R1CBH/P	- / -	2	Partial capture
08-15 19:25	60m	+9 / -	ZS6WAB	- / -	2	Partial capture
08-15 19:23	60m	+10 / -	DK1TBL	- / -6	3	✓ Closing fragment
08-10 04:37	80m	+8 / -	VP2MAA	-15 / -17	9	✓ Closing observed
08-08 17:09	40m	-5 / -	G3MIK	- / -4	2	Partial capture
08-08 17:06	40m	-6 / -	G4DBW	- / +6	2	Partial capture
08-08 17:03	40m	0 / -2	UX7QV	+4 / -	5	✓ Full exchange observed
08-08 17:01	40m	+4 / -	IK2TPX	- / 0	2	✓ Closing fragment
08-08 17:00	40m	-3 / -7	UA3GDJ	+3 / -	3	✓ Closing observed
08-08 16:58	40m	-4 / -	DK4RH	- / +9	2	✓ Closing fragment
08-08 16:56	40m	-2 / -	DL3BCU	- / +8	2	✓ Closing fragment
08-08 16:55	40m	0 / -3	UY5AX	-17 / -	3	✓ Closing observed
08-08 16:53	40m	+2 / -	PA3BMB	- / -	2	✓ Closing fragment
08-08 16:51	40m	0 / +8	DL6ZXG	-7 / -	4	✓ Full exchange observed
08-08 16:49	40m	-2 / +6	DA1ST	-4 / +10	4	✓ Full exchange observed
08-08 16:47	40m	-4 / -	DG6ITP	-8 / -	5	✓ Full exchange observed
08-08 16:45	40m	-2 / -3	RN6MA	0 / -30	4	✓ Full exchange observed
08-08 14:02	40m	-11 / -	<...>	- / -11	5	Partial capture
08-03 20:22	40m	-1 / -	<...>	- / -	4	Partial capture
08-03 05:38	60m	+6 / -	<...>	- / -14	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
183145  +7 2598  ZS1J DK3DUA JO61 (x2)
172200  +4 2294  JE6WOQ DK3DUA JO61
172445  +9 2430  EU4BE DK3DUA R-17
172500 -14 2072  DK3DUA EU4BE RR73
172515 +10 2430  EU4BE DK3DUA 73
172530  -2 1110  DK3DUA DK7ZT +09 (x5)
173830 +16 2196  DA6DE DK3DUA JO61
174000 +18 2423  4X1UF DK3DUA JO61 (x3)

40m

UTC    dB Audio  Message
060015  -5  867  DK3DUA LZ2VQ KN23 (x2)
155300 +15 2727  GD4VBA DK3DUA JO61 (x5)
155515  -1 2527  DK3DUA UA4FEN -09 (x3)
155830 +12 2527  GD4VBA DK3DUA R-30 (x5)

60m

UTC    dB Audio  Message
193300  -6 1688  DK3DUA ER1CW RR73
193315 +14 2577  ER1CW DK3DUA 73
193430 -11 1928  DK3DUA IK4CBO JN54
194015 +12 2529  Z68PX DK3DUA JO61 (x4)
194200  -8  572  DK3DUA Z68PX +11
194215 +16 2529  Z68PX DK3DUA R-13
194230  -1  573  DK3DUA Z68PX RR73
194245 +16 2529  Z68PX DK3DUA 73
194300 +12 2528  DK3DUA SP8BJU +01
194315  +8 2529  SP8BJU DK3DUA R-01
194330 +12 2528  DK3DUA SP8BJU RR73
194345  +7 2529  SP8BJU DK3DUA 73

20m

UTC    dB Audio  Message
183945 +16  365  <...> DK3DUA JO61 (x2)
184030 -11 1764  DK3DUA <...> -03
184045 +13  364  <...> DK3DUA JO61
184100  +5 2287  DK3DUA DK9IP JN48
184115 +13  365  <...> DK3DUA R-05
184130  +4 2287  DK3DUA DK9IP JN48
184130  -8 1764  <DK3DUA> 8B81JB RR73
184200 -10 1764  DK3DUA RR73; V51VJQ <...> -14
184200  +4 2287  DK3DUA DK9IP JN48 (x2)
184230 -11 1764  DK3DUA 8B81JB RR73
184245 +13  364  <...> DK3DUA JO61
184300 -11 1764  DK3DUA 8B81JB RR73
184315 +12  364  <...> DK3DUA JO61

10m

UTC    dB Audio  Message
095900 -18 1647  DK3DUA LZ4VR KN13 (x2)
101100  +0 2944  DK3DUA E75FM RR73
102915 -19 1648  DK3DUA LZ4VR KN13 (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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