DC8SJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO54

Receiver-side FT8 activity involving DC8SJ, decoded by SO8OO in southeastern Poland. 58 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-10 and 2026-09-01.

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 58 FT8 messages attributed to DC8SJ as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 40 m (7%). Several six-hour UTC windows tied for the largest share (64%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (78%); the estimated median was -5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

40m · 4 20m · 54

First attributed message: 2026-07-10
Last attributed message: 2026-09-01 17:24 UTC

Observed FT8 message patterns

Attributed sample: 58 messages
Active dates: 7 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -12 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 45.

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 DC8SJ in decoded directed-looking exchanges:

CS8ABF · Azores DL2SMW · Fed. Rep. of Germany IS0KNW · Sardinia NL8F · Alaska OE4RGC · Austria OM7AG · Slovak Republic TA3GO · Asiatic Turkey IK4RVY · Italy

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 DC8SJ

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: JO54 · 36 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 892 km (approx.)
Last such locator decoded: 2026-09-01 16:03 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	DC8SJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 09:42	20m	-10 / -18	LX1FDE	+2 / -10	5	Partial capture
08-30 09:37	20m	-6 / -	OH3DJP	- / -12	6	Partial capture
08-30 09:32	20m	-9 / -14	OE4RGC	-3 / -5	5	✓ Full exchange observed
08-30 09:30	20m	-10 / -	OM7AG	- / -	2	✓ Closing fragment
08-30 09:12	20m	-11 / -	OK2CNI	- / -	3	Partial capture
08-27 17:47	20m	+2 / -	WB7BMA	- / -	2	Partial capture
08-27 17:45	20m	0 / -	TF3PPN	- / -	3	Partial capture
08-27 17:42	20m	0 / -	BV7RR	- / -	2	Partial capture
08-27 17:34	20m	-4 / -	RI1FJL	- / -20	4	Partial capture
08-27 17:32	20m	+2 / -	BV7RR	- / -	3	Partial capture
08-27 17:31	20m	+1 / -	M1DBW	- / -	2	Partial capture
08-27 17:27	20m	+1 / -	BV7RR	- / -	4	Partial capture
08-27 17:21	20m	-1 / -2	CS8ABF	-3 / -	4	✓ Closing observed
08-27 17:18	20m	+4 / -	BD6IIC	- / -17	2	Partial capture
08-27 17:09	40m	-7 / -	JR1UTC	- / -	2	Partial capture
08-22 10:43	20m	-12 / -	<...>	- / -15	3	Partial capture
07-10 18:49	20m	-6 / -	TA3GO	- / -11	2	✓ Closing fragment
07-10 18:47	20m	- / -	EA7LGM	+6 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
170900  -6  912  JR1UTC DC8SJ JO54 (x2)
160300  -4  912  TK5NJ DC8SJ JO54
172415 -12  912  IK4RVY DC8SJ 73

20m

UTC    dB Audio  Message
093745  -8  953  OH3DJP DC8SJ JO54 (x6)
094030 -17  930  DC8SJ OE9NET -12
094215  +4  377  DC8SJ LX1FDE -18 (x4)
094400 -10  953  LX1FDE DC8SJ R-10
163900 -13 1215  DC8SJ EX7DY -14
164130 -12  950  9M2DGA DC8SJ JO54
164515 -13  951  EX7DY DC8SJ JO54

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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