DB1SK — 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 DB1SK, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-26.

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 30 FT8 messages attributed to DB1SK as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (63%), followed by 20 m (37%). Several six-hour UTC windows tied for the largest share (80%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (77%); the estimated median was -12 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 19 20m · 11

First attributed message: 2026-06-08
Last attributed message: 2026-08-26 09:49 UTC

Observed FT8 message patterns

Attributed sample: 30 messages
Active dates: 3 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -18 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 2.

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 DB1SK in decoded directed-looking exchanges:

LZ3CB · Bulgaria ×2 M0BEW · England TA2EE · Asiatic Turkey YO9PH · Romania DL3KBB · Fed. Rep. of Germany DL3RSK · Fed. Rep. of Germany EA5HM · Spain PD0LBY · Netherlands

Most frequent locator attributed to DB1SK

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 · 19 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-08-26 09:49 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	DB1SK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-26 09:51	20m	- / -13	TA2EE	-3 / -	2	✓ Closing fragment
08-26 09:36	20m	- / -15	F1ODM	-12 / -	2	Partial capture
08-26 09:34	20m	-17 / -13	F4FSY	-4 / -18	4	Partial capture
08-26 09:32	20m	- / -13	YO9PH	+3 / -	2	✓ Closing fragment
08-24 17:30	20m	- / -	RZ4FWA	+1 / -	3	Partial capture
08-23 06:55	20m	- / +1	LZ3CB	+16 / -	3	✓ Closing fragment
08-22 20:50	40m	-13 / +10	DL3RSK	-13 / -	5	✓ Closing observed
08-22 20:42	40m	-10 / -5	DL3KBB	-4 / -6	5	✓ Full exchange observed
08-22 20:33	40m	-11 / -14	EA5HM	-9 / -14	4	✓ Full exchange observed
08-22 20:29	40m	-10 / -1	PD0LBY	-10 / +2	4	✓ Full exchange observed
08-22 20:22	40m	-14 / -7	LZ3CB	+6 / -	6	✓ Closing observed
08-22 20:22	40m	- / -	RD3FY	-2 / -	3	Partial capture
08-16 12:58	10m	- / +1	M0BEW	-14 / -	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
093230 -24 1541  CQ DB1SK JO31
093245  -1 2020  DB1SK YO9PH -13 (x2)
093445  -3 1828  DB1SK F4FSY -13 (x2)
093615  -9 1541  DB1SK F1ODM -15
093630 -16 1541  CQ DB1SK JO31
093645  -5 1828  DB1SK F4FSY -10
093645 -14 1541  DB1SK F1ODM -15
093700 -14 1541  CQ DB1SK JO31
093730 -17 1540  F4FSY DB1SK R-18
094400 -23 1541  CQ DB1SK JO31 (x2)
095115  -4  527  DB1SK TA2EE -13 (x2)

40m

UTC    dB Audio  Message
203415  -9 1577  DB1SK EA5HM 73
204200 -10 1499  CQ DB1SK JO31
204215  -4 1498  DB1SK DL3KBB JO30
204230 -10 1499  DL3KBB DB1SK -06
204245  -5 1497  DB1SK DL3KBB R-05
204300 -11 1499  DL3KBB DB1SK RR73
204315  -3 1498  DB1SK DL3KBB 73
204830  -7 1499  CQ DB1SK JO31 (x2)
205015 -12 1229  DB1SK DL3RSK JO30
205030  -6 1499  CQ DB1SK JO31
205045 -13 1229  DB1SK DL3RSK JO30 (x2)
205200 -13 1499  DL3RSK DB1SK RR73
205215 -14 1229  DB1SK DL3RSK 73

10m

UTC    dB Audio  Message
125845 -11 1553  DB1SK M0BEW +01 (x2)
130015 -15  926  DB1SK EA3CU JN11
112345 -24 1554  DB1SK E70SZ JN84

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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