DK6JU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO33

Receiver-side FT8 activity involving DK6JU, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-13 and 2026-09-20.

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 50 FT8 messages attributed to DK6JU as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (72%), followed by 40 m (24%) and 80 m (4%). Several six-hour UTC windows tied for the largest share (86%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (60%); the estimated median was -8 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 2 40m · 12 20m · 36

First attributed message: 2026-07-13
Last attributed message: 2026-09-20 19:14 UTC

Observed FT8 message patterns

Attributed sample: 50 messages
Active dates: 5 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -13 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 30.

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 DK6JU in decoded directed-looking exchanges:

K7EA · United States M0IOW · England W0ERB · United States R1AV · European Russia RA9CUU · Asiatic Russia UA3POG · European Russia UA4HJ · European Russia VJ6X · Australia

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 DK6JU

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: JO33 · 32 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,091 km (approx.)
Last such locator decoded: 2026-09-20 19:14 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	DK6JU S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 19:13	80m	+14 / -	R7CD	- / -	2	Partial capture
07-17 16:12	40m	-5 / -16	UA3POG	-19 / -16	3	✓ Full exchange observed
07-17 16:09	40m	-8 / -	UA4HJ	- / -	2	✓ Closing fragment
07-17 16:05	40m	-10 / -	RA9CUU	- / -20	2	✓ Closing fragment
07-16 12:22	20m	-8 / -	M0IOW	- / -3	2	✓ Closing fragment
07-16 12:14	20m	-8 / -	BG4UCZ	- / -24	6	Partial capture
07-14 20:44	40m	-4 / -	VJ6X	- / -	2	✓ Closing fragment
07-14 20:37	40m	-13 / -	PY2GIG	- / -	3	Partial capture
07-14 15:04	20m	-10 / -	VK2LAW	- / -	2	Partial capture
07-14 14:50	20m	-14 / -	PY2FZ	- / -	2	Partial capture
07-14 14:48	20m	- / -	9A4ZM	-4 / -	2	Partial capture
07-14 14:46	20m	-9 / -	K7EA	- / -20	5	✓ Closing fragment
07-14 14:44	20m	-2 / -	NC7I	- / -	2	Partial capture
07-14 14:43	20m	0 / -	YB1DFE	- / -	2	Partial capture
07-14 14:41	20m	-6 / -	VE3PFW	- / -	2	Partial capture
07-13 15:13	20m	- / -24	RL2F	-18 / -	6	Partial capture
07-13 14:38	20m	-5 / -	BI2QMT	- / -	3	Partial capture
07-13 14:36	20m	-5 / -	9M8DEN	- / -	2	Partial capture
07-13 13:19	20m	- / -	DL9KM	-10 / -	4	Partial capture
07-13 13:16	20m	+8 / -	W0ERB	- / -16	4	✓ Closing fragment
06-28 15:01	10m	- / -5	F1SAA	0 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
191330 +15 2185  R7CD DK6JU JO33 (x2)

40m

UTC    dB Audio  Message
203745 -11 2139  PY2GIG DK6JU JO33 (x3)
204445 -12 2138  VJ6X DK6JU JO33 (x2)
160530 -12 1060  RA9CUU DK6JU R-20 (x2)
160930 -10 2567  UA4HJ DK6JU JO33 (x2)
161215 -19 1536  DK6JU UA3POG R-16
161230  -3 2567  UA3POG DK6JU -16 (x2)
161430  -9 2567  R1AV DK6JU RR73

20m

UTC    dB Audio  Message
150430  -9 1824  VK2LAW DK6JU JO33 (x3)
151700  -7 1395  VE2LBI DK6JU JO33
190430  +3  925  DK6JU YO9HP +00
202715 -10  301  DK6JU YO4NF +01
121400 -13 2019  BG4UCZ DK6JU JO33 (x6)
121930 -10 2370  KF0YOB DK6JU JO33
122200  -4 2370  M0IOW DK6JU -03 (x2)

10m

UTC    dB Audio  Message
150115  -1 1497  DK6JU F1SAA -05 (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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