DK9LF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO43

Receiver-side FT8 activity involving DK9LF, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-10-04.

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 23 FT8 messages attributed to DK9LF as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -14 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

40m · 23

First attributed message: 2026-10-04
Last attributed message: 2026-10-04 08:03 UTC

Observed FT8 message patterns

Attributed sample: 23 messages
Active dates: 1 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -22 to -8 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 3.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with DK9LF in decoded directed-looking exchanges:

SX2LGT · Greece ×2 DF2JK · Fed. Rep. of Germany DG7JG · Fed. Rep. of Germany DL0RMC · Fed. Rep. of Germany EA4IPN · Spain F4MOJ · France F5OZC · France G3YQA · England OE9MOI · Austria OK1DXR · Czech Republic RC6ZB · European Russia SQ7KHW · Poland

Most frequent locator attributed to DK9LF

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: JO43 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 964 km (approx.)
Last such locator decoded: 2026-10-04 07:06 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	DK9LF S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-04 12:12	40m	- / -22	SQ3WL	-15 / -	2	Partial capture
10-04 12:03	40m	- / -20	DL0RMC	+3 / -	3	✓ Closing fragment
10-04 11:59	40m	- / -12	OK1DXR	-12 / -	2	✓ Closing fragment
10-04 11:41	40m	- / -6	DK1HSI	-16 / -	2	Partial capture
10-04 11:38	40m	- / -12	OK1FKY	-10 / -	3	Partial capture
10-04 11:34	40m	- / -9	DG7JG	-12 / -	2	✓ Closing fragment
10-04 11:31	40m	- / -23	DF2JK	-16 / -	2	✓ Closing fragment
10-04 10:42	40m	- / -17	OE5ABL	-10 / -	2	Partial capture
10-04 06:49	40m	- / -	DL9KM	-4 / -	5	Partial capture
10-04 06:40	40m	-9 / -12	G3YQA	-8 / -	2	✓ Closing observed
10-04 06:26	40m	- / -1	YL3EK	0 / -	5	✓ Closing fragment
10-04 06:23	40m	-15 / -4	M1EIV	-15 / -13	3	Partial capture
10-04 06:12	40m	- / -10	DK3MM	-8 / -	3	Partial capture
10-04 06:08	40m	-12 / -	LB9AE	- / -	2	Partial capture
10-04 05:57	40m	-14 / -	RV6LRE	- / -	3	Partial capture
10-04 05:45	40m	- / -4	F5OZC	-4 / -	2	✓ Closing fragment
10-04 05:45	40m	- / -9	YL3VN	-4 / -	2	Partial capture
10-04 05:26	40m	-19 / -9	IZ5NFD	-7 / -	2	Partial capture
10-04 05:15	40m	-9 / -14	SX2LGT	-4 / -16	9	✓ Full exchange observed
10-04 04:04	40m	- / -11	RO2E/P	-14 / -	2	Partial capture
10-04 03:32	40m	- / -13	RC6ZB	+4 / -	2	✓ Closing fragment
10-04 02:58	40m	- / -8	EA4IPN	-9 / -	7	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
113200 -16 1292  DK9LF DF2JK RR73
113430 -13 1163  DK9LF DG7JG -09 (x2)
113845 -11 1053  DK9LF OK1FKY -12 (x3)
114100 -15  888  DK9LF DK1HSI -06 (x2)
115930 -11 1335  DK9LF OK1DXR -12 (x2)
120330  -1  722  DK9LF DL0RMC -20 (x3)
121200 -16 1261  DK9LF SQ3WL -22 (x2)

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