DL1MKJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO31

Receiver-side FT8 activity involving DL1MKJ, decoded by SO8OO in southeastern Poland. 75 FT8 messages attributed to this token as transmitter, on 160m, 20m, 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-06-28.

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 75 FT8 messages attributed to DL1MKJ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (76%), followed by 160 m (13%) and 20 m (11%). Several six-hour UTC windows tied for the largest share (76%), 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

160m · 10 20m · 8 10m · 57

First attributed message: 2026-06-12
Last attributed message: 2026-06-28 16:59 UTC

Observed FT8 message patterns

Attributed sample: 75 messages
Active dates: 3 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -16 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 36, 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 DL1MKJ in decoded directed-looking exchanges:

DK7UY · Fed. Rep. of Germany DO7GH · Fed. Rep. of Germany SP6M · Poland UX7QV · Ukraine YT3PL · Serbia HB9GNH · Switzerland DH5BO · Fed. Rep. of Germany DL7DO · Fed. Rep. of Germany DL8WEM · Fed. Rep. of Germany DL9FB · Fed. Rep. of Germany F1PPH · France IW1GB · Italy

Most frequent locator attributed to DL1MKJ

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: JO31 · 56 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-06-28 16:59 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	DL1MKJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-27 06:20	80m	- / -	DL8DCM	-7 / -	3	✓ Closing fragment
08-27 06:19	80m	- / -8	DK4RH	-16 / -	2	Partial capture
08-27 06:00	80m	- / +3	DA1ST	-4 / -	3	✓ Closing fragment
08-14 20:07	160m	- / -15	HB9GNH	-16 / -	3	✓ Closing fragment
07-25 19:07	20m	- / -11	IS0KNG	-8 / -	12	Partial capture
06-28 16:45	20m	- / -13	UT7EZZ	-2 / -	2	✓ Closing fragment
06-28 16:43	20m	- / -	M7TUP	-10 / -	2	Partial capture
06-28 16:39	20m	- / -	DL9FB	+1 / -	2	✓ Closing fragment
06-28 16:37	20m	- / -3	IW1GB	-6 / -	2	✓ Closing fragment
06-28 16:34	20m	- / -	DL8WEM	-6 / -	2	✓ Closing fragment
06-28 16:17	20m	- / -6	DL7DO	-1 / -	3	✓ Closing fragment
06-28 16:05	20m	- / -23	UA3GDJ	-4 / -	3	✓ Closing fragment
06-28 16:00	20m	- / -	DB1EF	-18 / -	2	Partial capture
06-26 11:21	10m	-6 / -	G7VGM	- / -16	2	Partial capture
06-26 11:08	10m	-4 / -	DO7GH	- / +9	2	✓ Closing fragment
06-26 11:02	10m	-6 / -21	DK7UY	-11 / -8	4	✓ Full exchange observed
06-26 11:01	10m	- / -12	UA6YW	+2 / -	6	Partial capture
06-26 10:55	10m	- / -	DO9BAU	-21 / -	3	Partial capture
06-26 10:52	10m	-10 / -	SP6M	- / -	2	✓ Closing fragment
06-26 10:47	10m	-11 / -	UX7QV	- / -14	2	✓ Closing fragment
06-26 10:42	10m	-11 / -	SP6M	- / +9	5	Partial capture
06-26 10:39	10m	-10 / -	YT3PL	- / -3	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
060015  -5  791  DL1MKJ DA1ST JO41 (x3)
060315 -16 1603  DL1MKJ DL2HUC JO51
061915 -16  791  DL1MKJ DK4RH JO31 (x2)
062045  -5  792  DL1MKJ DL8DCM JO41 (x3)

160m

UTC    dB Audio  Message
200745 -16 1562  DL1MKJ HB9GNH JN47 (x3)

20m

UTC    dB Audio  Message
184445  -9 2379  DL1MKJ SV2AOB KN10
190715  -4 1686  DL1MKJ IS0KNG -11
190715 -11 1112  DL1MKJ F1PPH JN25
190745  -5 1686  DL1MKJ IS0KNG -11 (x5)
190945  -8 1110  DL1MKJ F1PPH 73
191015  -1 1686  DL1MKJ IS0KNG -11 (x6)

10m

UTC    dB Audio  Message
111300  -6  873  CQ DL1MKJ JO31 (x3)
111430  -6  873  SP2EWQ DL1MKJ +00
111600 -11  873  CQ DL1MKJ JO31 (x9)
112130  -5  874  G7VGM DL1MKJ -16 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee