DO4TKW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO41

Receiver-side FT8 activity involving DO4TKW, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 80m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-08.

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 5 FT8 messages attributed to DO4TKW as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was -20 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-20 dB

Estimated median S/N

Bands

80m · 5

First attributed message: 2026-09-08
Last attributed message: 2026-09-08 17:37 UTC

Observed FT8 message patterns

Attributed sample: 5 messages
Active dates: 1 UTC dates
Estimated median S/N: -20 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 0.

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 DO4TKW in decoded directed-looking exchanges:

DD7EE · Fed. Rep. of Germany DG6ITP · Fed. Rep. of Germany DK7ZT · Fed. Rep. of Germany DL4YDR · Fed. Rep. of Germany DO1MGN · Fed. Rep. of Germany DO5HOK · Fed. Rep. of Germany DO9SAM · Fed. Rep. of Germany

Most frequent locator attributed to DO4TKW

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: JO41 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 916 km (approx.)
Last such locator decoded: 2026-09-08 17:37 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	DO4TKW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 18:46	80m	- / -19	DO1MGN	-7 / -	3	✓ Closing fragment
09-08 18:42	80m	- / -8	DD7EE	+8 / -	3	✓ Closing fragment
09-08 18:39	80m	- / -	DK7UY	+6 / -	2	Partial capture
09-08 18:39	80m	- / -14	DO3LZ	-14 / -	3	Partial capture
09-08 18:38	80m	- / -	DO2YJG	-14 / -	5	Partial capture
09-08 18:34	80m	- / -	DD7EE	+4 / -	5	Partial capture
09-08 18:25	80m	- / -	DO2YJG	-20 / -	2	Partial capture
09-08 18:02	80m	- / -5	DG6ITP	+1 / -	4	✓ Closing fragment
09-08 17:52	80m	- / -22	DO9SAM	+5 / -	2	✓ Closing fragment
09-08 17:43	80m	- / -	DL5JMN	+4 / -	2	Partial capture
09-08 17:34	80m	-17 / -6	DO1FZL	-1 / -	4	Partial capture
09-08 17:31	80m	- / -15	DK7ZT	+3 / -	2	✓ Closing fragment
09-08 17:29	80m	- / -9	DO5HOK	-6 / -	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
183915  -6 1503  DO4TKW DO2YJG JO31
183915  +7 2372  DO4TKW DK7UY JO44
183945 -16 1622  DO4TKW DO3LZ -14
183945 -19 1502  DO4TKW DO2YJG JO31
183945  +5 2372  DO4TKW DK7UY JO44
184015 -17 1501  DO4TKW DO2YJG JO31 (x2)
184145  -9 1622  DO4TKW DO3LZ -23
184245  +8  506  DO4TKW DD7EE JO41 (x3)
184645  -8  570  DO4TKW DO1MGN JO50 (x3)
185415  +2  570  DO4TKW DL4YDR 73

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