DL9BUS — 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 DL9BUS, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 6 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-09-19.

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 34 FT8 messages attributed to DL9BUS as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (94%), followed by 80 m (6%). Most decodes (62%) fell within the six-hour window 07:00-13:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 2 40m · 32

First attributed message: 2026-09-05
Last attributed message: 2026-09-19 18:01 UTC

Observed FT8 message patterns

Attributed sample: 34 messages
Active dates: 6 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -17 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 11.

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 DL9BUS in decoded directed-looking exchanges:

DK7ZT · Fed. Rep. of Germany ×2 9A4ZM · Croatia CT7AUT · Portugal DL7DL · Fed. Rep. of Germany F5RRS · France IK0CHU · Italy MW0UPH · Wales ON3CL · Belgium OZ2LC · Denmark SP6FME · Poland DO4TYW · Fed. Rep. of Germany

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 DL9BUS

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 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-09-09 13:37 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	DL9BUS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 18:36	40m	- / -12	HB9ELE	+6 / -	4	Partial capture
09-19 18:00	80m	-12 / -16	DK7ZT	-5 / +8	5	✓ Full exchange observed
09-19 17:58	80m	- / -21	DO4TYW	-16 / -	2	✓ Closing fragment
09-09 13:38	40m	- / +7	DL7DL	0 / -	8	✓ Closing fragment
09-09 13:36	40m	-15 / -	G5STU	- / +3	3	Partial capture
09-08 12:18	40m	-21 / -3	IK0CHU	-16 / -	3	✓ Closing observed
09-08 07:43	40m	-14 / -	F5RRS	- / +8	2	✓ Closing fragment
09-07 15:30	40m	-8 / -	PC1K	- / -	2	Partial capture
09-07 07:13	40m	-16 / -	CT7AUT	- / -13	3	✓ Closing fragment
09-06 08:04	40m	-18 / -10	3Z100LKK	-16 / -20	3	Partial capture
09-06 07:58	40m	- / -3	ON3CL	-15 / -	3	✓ Closing fragment
09-06 07:46	40m	- / +9	DK7ZT	-10 / -	3	✓ Closing fragment
09-06 07:44	40m	-8 / +1	PA2RO	-7 / +7	3	Partial capture
09-06 07:41	40m	- / -	UT4PA	+14 / -	2	Partial capture
09-06 07:41	40m	-8 / -	DK7ZT	-13 / +5	4	Partial capture
09-06 07:39	40m	-9 / -5	9A4ZM	+7 / 0	4	✓ Full exchange observed
09-06 07:37	40m	- / -	9A4ZM	+3 / -	2	Partial capture
09-06 07:34	40m	-6 / -5	SP6FME	+8 / +1	7	✓ Full exchange observed
09-06 07:33	40m	-7 / -	OZ2LC	- / -3	2	✓ Closing fragment
09-05 15:59	40m	-8 / -	MW0UPH	- / +1	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
133745 -14 1009  G5STU DL9BUS JO31
133830  +0  880  DL9BUS DL7DL JO62
133845 -14 1010  G5STU DL9BUS +03
133900  +0  880  DL9BUS DL7DL JO62 (x7)
134245 -11 1009  DK6MR DL9BUS RRR
183615  +3  695  DL9BUS HB9ELE -12 (x4)

80m

UTC    dB Audio  Message
175830 -15 1388  DL9BUS DO4TYW -21 (x2)
180030  -3 1149  DL9BUS DK7ZT -16 (x2)
180115 -17 1388  DK7ZT DL9BUS R+08
180130  -7 1149  DL9BUS DK7ZT RR73
180145  -7 1388  DK7ZT DL9BUS 73

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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