W3BJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM27

Receiver-side FT8 activity involving W3BJ, decoded by SO8OO in southeastern Poland. 64 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-09-17.

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 64 FT8 messages attributed to W3BJ 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 (83%), followed by 40 m (17%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

40m · 11 20m · 53

First attributed message: 2026-06-17
Last attributed message: 2026-09-17 22:58 UTC

Observed FT8 message patterns

Attributed sample: 64 messages
Active dates: 7 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -20 to -7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 27, moderate (-15 to -9 dB) 28, strong (≥ -8 dB) 9.

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 W3BJ in decoded directed-looking exchanges:

MM0HVU · Scotland PD9JPV · Netherlands W4DXM · United States W4PSK · United States AD2NU · United States R7DX · European Russia W6N · United States

Most frequent locator attributed to W3BJ

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: FM27 · 32 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,347 km (approx.)
Last such locator decoded: 2026-09-17 22:58 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	W3BJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 23:29	40m	- / -	F4BYA	-2 / -	2	Partial capture
09-17 23:01	40m	- / -10	F5NBU	-7 / -	5	Partial capture
09-17 22:58	40m	- / -	UA4FKT	+6 / -	3	Partial capture
09-17 22:58	40m	- / -	F4BYA	0 / -	2	Partial capture
09-15 23:55	40m	- / -18	R7DX	-16 / -	2	✓ Closing fragment
09-15 23:47	40m	-16 / -	W6N	- / -3	2	✓ Closing fragment
08-11 23:38	20m	- / -9	RN6MA	-18 / -	2	Partial capture
08-11 23:33	20m	- / -18	SV5BYP	-15 / -	4	Partial capture
08-10 00:37	40m	- / -	EA3AAY	-20 / -	2	Partial capture
08-10 00:29	40m	- / -10	DH1KJ	-22 / -	2	Partial capture
07-13 23:45	20m	- / +5	W4DXM	-8 / -	2	✓ Closing fragment
07-13 19:03	20m	- / -	F4BYA	-5 / -	3	Partial capture
07-10 23:02	20m	- / -1	W4PSK	+1 / -	3	✓ Closing fragment
07-10 19:17	20m	- / -23	UT7UJ	-3 / -	6	Partial capture
07-07 19:56	20m	- / -	IK4LZH	-9 / -	2	Partial capture
07-02 23:32	20m	-12 / -	KE0N	- / -25	3	Partial capture
07-02 23:30	20m	-12 / -	OK1PEZ	- / -	2	Partial capture
07-02 23:24	20m	- / -18	BG0DLA	-4 / -	2	Partial capture
06-29 23:12	20m	- / -11	MM0HVU	-19 / -	5	✓ Closing fragment
06-26 18:44	20m	- / -18	IZ0GRR	-16 / -	2	Partial capture
06-23 22:59	20m	- / -	EA3GIW	+4 / -	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
225800  +1 2983  W3BJ F4BYA JN19
225815 -19 1218  CQ W3BJ FM27
225830  +8 1218  W3BJ UA4FKT LO23
225830  -2 2983  W3BJ F4BYA JN19
225900  +4 1218  W3BJ UA4FKT LO23 (x2)
230130  -6 1219  W3BJ F5NBU JN28 (x5)
232830 -10 1272  W3BJ DL8HXP -14
232900 -10 1274  W3BJ F5NBU JN28
232900  -3 2983  W3BJ F4BYA JN19 (x2)

20m

UTC    dB Audio  Message
230300  +1 2904  W3BJ W4PSK RR73 (x2)
231530 -17 1107  W3BJ PD2VE -07
231800 -13  891  W3BJ PD9OH JO21
190300  -8 3013  W3BJ F4BYA JN19 (x3)
234530  -9  825  W3BJ W4DXM +05 (x2)
233300 -18 1680  W3BJ SV5BYP KM46 (x4)
233830 -17 1178  W3BJ RN6MA -09 (x2)

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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