DK4UA — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO71

Receiver-side FT8 activity involving DK4UA, decoded by SO8OO in southeastern Poland. 39 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-23.

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 39 FT8 messages attributed to DK4UA as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (51%), followed by 80 m (46%) and 40 m (3%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (79%); the estimated median was 0 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

80m · 18 60m · 20 40m · 1

First attributed message: 2026-06-11
Last attributed message: 2026-10-23 17:25 UTC

Observed FT8 message patterns

Attributed sample: 39 messages
Active dates: 9 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -18 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 31.

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 DK4UA in decoded directed-looking exchanges:

RI1FJL · Franz Josef Land 9K2GR · Kuwait ER3UA · Moldova

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 DK4UA

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: JO71 · 34 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 508 km (approx.)
Last such locator decoded: 2026-10-23 17:25 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	DK4UA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 17:24	60m	-8 / -	F1FPK/P	- / -	2	Partial capture
10-23 17:14	60m	- / -	SP2EWQ	-3 / -	3	Partial capture
10-10 17:07	60m	0 / -12	9K2GR	-11 / -4	6	✓ Full exchange observed
10-09 14:55	60m	-4 / -	9K2GR	- / -	2	Partial capture
10-07 15:40	60m	-10 / -	9K2GR	- / -	2	Partial capture
10-07 15:31	60m	-14 / -8	M0GDX	-16 / -5	2	Partial capture
10-07 15:24	60m	-4 / -	M0GDX	- / -9	4	Partial capture
10-06 18:00	60m	- / -7	ER3UA	0 / -	2	✓ Closing fragment
09-27 17:38	60m	-8 / -6	ES0RY	-8 / -2	3	Partial capture
09-21 17:39	80m	-6 / -	RI1FJZ	- / -	2	Partial capture
09-21 17:33	80m	-2 / -	RI1FJZ	- / -	2	Partial capture
09-21 17:29	80m	+4 / -	RI1FJZ	- / -	4	Partial capture
09-19 18:43	80m	+6 / -	V51WH	- / -	8	Partial capture
08-26 15:28	20m	- / -5	RI1FJL	-11 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
170745  -6 1261  9K2GR DK4UA JO71 (x2)
170830 -11 2029  DK4UA 9K2GR -12
170845  +0 1261  9K2GR DK4UA R-04
170900 -11 2029  DK4UA 9K2GR RR73
170915  +5 1260  9K2GR DK4UA 73
145445 -10 1753  F4HER/P DK4UA JO71
145500  +1 1033  DK4UA DA125RH +08
171115 -22 2026  <...> DK4UA JO71
171300 -18 2025  OE9HGV DK4UA JO71
171445  +1 2025  DK4UA SP2EWQ JO93 (x3)
172415  -8  424  F1FPK/P DK4UA JO71 (x2)

80m

UTC    dB Audio  Message
184345  +1 2701  V51WH DK4UA JO71 (x7)
172915  +7 1152  RI1FJZ DK4UA JO71 (x8)

20m

UTC    dB Audio  Message
152800  -9  465  DK4UA RI1FJL -05 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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