DO3BST — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO51

Receiver-side FT8 activity involving DO3BST, decoded by SO8OO in southeastern Poland. 94 FT8 messages attributed to this token as transmitter, on 80m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-04 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 94 FT8 messages attributed to DO3BST as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). 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 (98%); the estimated median was +6 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+6 dB

Estimated median S/N

Bands

80m · 94

First attributed message: 2026-09-04
Last attributed message: 2026-09-19 21:38 UTC

Observed FT8 message patterns

Attributed sample: 94 messages
Active dates: 3 UTC dates
Estimated median S/N: +6 dB
Estimated 10th-90th percentile: -3 to +14 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 92.

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 DO3BST in decoded directed-looking exchanges:

DL6ZXG · Fed. Rep. of Germany KZ7Y · United States N1WI · United States RI1FJZ · Franz Josef Land UN3P · Kazakhstan YV6BXN · Venezuela

Most frequent locator attributed to DO3BST

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: JO51 · 71 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 779 km (approx.)
Last such locator decoded: 2026-09-19 21:36 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	DO3BST S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 21:35	80m	+7 / -	MM0DXL	- / -15	6	Partial capture
09-19 21:29	80m	+14 / -	CN8DN	- / -	8	Partial capture
09-19 21:28	80m	- / -7	RY3F	-1 / -	3	Partial capture
09-19 21:26	80m	+5 / -	RI1FJZ	- / -6	4	✓ Closing fragment
09-05 04:28	80m	+10 / -	N1WI	- / -25	10	✓ Closing fragment
09-05 04:23	80m	+4 / -	AJ6T	- / -	3	Partial capture
09-05 04:19	80m	+8 / -	HI3K	- / -19	8	Partial capture
09-05 04:16	80m	+9 / -	K9BAW	- / -	3	Partial capture
09-05 04:14	80m	+6 / -	KZ7Y	- / -13	3	✓ Closing fragment
09-05 04:10	80m	+12 / -	RV3SBS/P	- / -25	2	Partial capture
09-05 04:09	80m	+18 / -	TF3VS	- / -	2	Partial capture
09-05 04:04	80m	+2 / -	YV6BXN	- / -20	3	✓ Closing fragment
09-04 18:35	80m	- / -	DL9GCG	0 / -	7	Partial capture
09-04 18:35	80m	-1 / -	RI1FJL	- / -24	12	Partial capture
09-04 18:18	80m	+4 / -	DL2EH	- / -	4	Partial capture
09-04 18:12	80m	+4 / -	JI3VUB	- / -	4	Partial capture
09-04 18:08	80m	+7 / -16	UN3P	-24 / -9	6	✓ Full exchange observed
09-04 17:37	80m	+8 / -	BA5AN	- / -	3	Partial capture
09-04 17:33	80m	+2 / -	JI3VUB	- / -	3	Partial capture
09-04 17:29	80m	+1 / -	UN3P	- / -	3	Partial capture
09-04 17:27	80m	+2 / -	FK8GM	- / -	4	Partial capture
09-04 17:25	80m	-12 / -	JI3VUB	- / -	3	Partial capture
08-13 14:37	80m	- / +7	DL6ZXG	0 / -	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
212900  -1  851  DO3BST RY3F -07
212915 +16  939  CN8DN DO3BST JO51 (x8)
213545  -4  848  MM0DXL DO3BST JO51 (x6)

10m

UTC    dB Audio  Message
104945 -16 2423  DO3BST EB3JT JN01

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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