DL7UDK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN48

Receiver-side FT8 activity involving DL7UDK, decoded by SO8OO in southeastern Poland. 266 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-07-26.

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 266 FT8 messages attributed to DL7UDK as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (34%), followed by 10 m (32%) and 40 m (30%). The busiest six-hour window was 20:00-02:00 UTC, containing 42% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

266

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 5 60m · 4 40m · 81 20m · 91 10m · 85

First attributed message: 2026-06-09
Last attributed message: 2026-07-26 14:18 UTC

Observed FT8 message patterns

Attributed sample: 266 messages
Active dates: 13 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -19 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 92, moderate (-15 to -9 dB) 94, strong (≥ -8 dB) 80.

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 DL7UDK in decoded directed-looking exchanges:

ER5DX · Moldova GM0VGI · Scotland 7Z1BM · Saudi Arabia 9K2YM · Kuwait 9Y4C · Trinidad & Tobago CN2DX · Morocco EI2HF · Ireland K8BL · United States OH6IH · Finland RA1AGA · European Russia V31MA · Belize Z62NS · Republic of Kosovo

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 DL7UDK

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: JN48 · 185 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 941 km (approx.)
Last such locator decoded: 2026-07-26 14:18 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	DL7UDK S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-27 23:27	20m	- / -14	V31MA	-14 / -	2	✓ Closing fragment
07-26 14:17	10m	-13 / -	9J2FI	- / -	3	Partial capture
07-26 14:16	10m	-13 / -	YE1AJE	- / -	3	Partial capture
07-26 14:11	10m	-14 / -	ER5DX	- / -1	2	✓ Closing fragment
07-24 09:52	10m	-6 / -	OH1CIN	- / -	3	Partial capture
07-23 22:35	20m	- / -6	9Y4C	-18 / -	2	✓ Closing fragment
07-23 18:41	40m	-19 / -	YG2CLC	- / -	3	Partial capture
07-23 18:39	40m	-17 / -	YD2VMF	- / -	4	Partial capture
07-23 18:36	40m	-16 / -	VK3BE	- / -16	4	Partial capture
07-23 18:33	40m	-17 / +2	TK5K	-7 / -	4	✓ Full exchange observed
07-23 18:30	40m	-16 / -	VJ6X	- / -18	4	✓ Closing fragment
07-22 22:05	20m	- / -18	EI2HF	-18 / -	2	✓ Closing fragment
07-22 21:40	80m	0 / -	TN8GD	- / -	2	Partial capture
07-22 21:03	40m	-16 / -	TM73TFR	- / -	2	Partial capture
07-22 21:01	40m	-17 / -10	YO9CX	-22 / -4	3	✓ Full exchange observed
07-22 20:59	40m	-18 / -4	SN1A	-18 / -	3	✓ Full exchange observed
07-22 20:55	40m	-18 / -8	<...>	-6 / +1	10	Partial capture
07-22 11:32	10m	-21 / -	9J2FI	- / -	2	Partial capture
07-22 11:07	10m	-12 / -	IZ8VYU	- / 0	5	Partial capture
07-22 11:01	10m	-16 / -	GM0VGI	- / -	2	✓ Closing fragment
07-22 10:59	10m	-12 / -	EX8ABR	- / -	2	Partial capture
07-22 10:57	10m	-13 / -	SP9MRP	- / -	4	Partial capture
07-22 10:54	10m	-20 / -	CN2GS	- / -14	2	Partial capture
07-22 10:48	10m	-11 / -	EX8ABR	- / -	7	Partial capture
07-22 10:38	10m	-14 / -	SQ8AA	- / +10	4	Partial capture
07-21 23:38	80m	0 / -	VU2NKS	- / -	3	Partial capture
07-21 23:34	40m	-12 / -	WV2B	- / -	2	Partial capture
07-21 23:32	40m	-11 / -5	LA7DMA	-18 / +9	6	✓ Full exchange observed
07-21 23:30	40m	-8 / +2	GM4HYG	-20 / -5	4	✓ Full exchange observed
07-21 23:28	40m	-3 / -7	UA4FKT	-4 / -1	5	✓ Full exchange observed
07-21 23:27	40m	-7 / -	4O7CC	- / +8	3	✓ Closing fragment
07-21 17:33	20m	-6 / -	7Z1BM	- / -7	2	✓ Closing fragment
07-21 17:28	20m	- / -5	CN2DX	-16 / -	2	✓ Closing fragment
07-21 16:29	20m	-6 / -	OH6IH	- / -6	2	✓ Closing fragment
07-20 20:24	20m	- / -	IU5HIU	+2 / -	6	Partial capture
07-14 19:56	40m	-9 / -	GM6ZC	- / -	3	Partial capture
07-14 19:54	40m	-8 / -	DL3MIB	-5 / -	4	✓ Closing observed
07-14 19:53	40m	- / -1	OL900CO	-6 / -	2	Partial capture
07-14 18:10	40m	-6 / -	SV9QWC	- / +4	2	Partial capture
07-14 17:04	40m	-11 / -	R2FDU	-9 / -	4	✓ Closing observed
07-14 16:37	20m	-9 / -	BH4ECL	- / -	3	Partial capture
07-11 06:59	20m	-8 / -24	Z62NS	-17 / +6	14	✓ Full exchange observed
07-11 06:57	20m	-9 / -	RA1AGA	- / -14	3	✓ Closing fragment
07-10 15:54	20m	- / -13	9K2YM	-6 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
162915  -5  803  OH6IH DL7UDK R-06 (x2)
163345 -14  801  TJ1GD/P DL7UDK JN48
172830 -17 1780  DL7UDK CN2DX -05 (x2)
173345  -8 1096  7Z1BM DL7UDK R-07 (x2)
174030  -9 1972  JH5AVM DL7UDK JN48
215245 -12  526  K8BL DL7UDK 73
220545 -18 2250  DL7UDK EI2HF -18 (x2)
223545 -19 2159  DL7UDK 9Y4C -06 (x2)
232715 -14 2178  DL7UDK V31MA -14 (x2)

10m

UTC    dB Audio  Message
110945  -9 1255  IZ8VYU DL7UDK R+00
111200 -16 1251  SV8GXC DL7UDK JN48
113245 -20 1598  9J2FI DL7UDK JN48 (x2)
095230  -8 1414  OH1CIN DL7UDK JN48 (x3)
141145 -16 1949  ER5DX DL7UDK 73 (x2)
141600 -12 1947  YE1AJE DL7UDK JN48 (x3)
141745 -12 1949  9J2FI DL7UDK JN48 (x3)

40m

UTC    dB Audio  Message
183345 -18 1651  TK5K DL7UDK JN48
183400  -7  494  DL7UDK TK5K +02
183415 -17 1651  TK5K DL7UDK R+15 (x2)
183630 -14 1652  VK3BE DL7UDK JN48 (x4)
183945 -19 1652  YD2VMF DL7UDK JN48 (x4)
184145 -23 1652  YG2CLC DL7UDK JN48 (x3)

80m

UTC    dB Audio  Message
233830  -3 1167  VU2NKS DL7UDK JN48 (x3)
214045  +6  776  TN8GD DL7UDK JN48 (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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