WB0USA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EN42

Receiver-side FT8 activity involving WB0USA, decoded by SO8OO in southeastern Poland. 130 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-06-24.

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 130 FT8 messages attributed to WB0USA as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (95%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

130

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

20m · 130

First attributed message: 2026-06-09
Last attributed message: 2026-06-24 06:02 UTC

Observed FT8 message patterns

Attributed sample: 130 messages
Active dates: 6 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -18 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 66, strong (≥ -8 dB) 43.

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 WB0USA in decoded directed-looking exchanges:

G0BLS · England HB9JNM · Switzerland M0CSD · England M7JVT · England SP7XIF · Poland TJ1GD · Cameroon

Most frequent locator attributed to WB0USA

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: EN42 · 48 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,843 km (approx.)
Last such locator decoded: 2026-06-24 06:02 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	WB0USA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-19 23:09	20m	- / -	EA7LGM	+17 / -	6	Partial capture
08-19 23:07	20m	- / -	DH2RL	-13 / -	3	Partial capture
08-19 23:03	20m	- / -17	SV9QWC	-16 / -	2	Partial capture
08-19 22:57	20m	- / -2	TJ1GD	-5 / -	2	✓ Closing fragment
07-14 01:52	20m	- / -11	R2GF	-12 / -	2	Partial capture
07-14 01:46	20m	- / -23	RM8T	-10 / -	2	Partial capture
06-24 06:06	20m	- / -4	I4KYO	-12 / -	3	Partial capture
06-24 06:02	20m	-21 / 0	M7JVT	-14 / -	3	✓ Closing observed
06-24 06:01	20m	- / -	M7PHE	-18 / -	5	Partial capture
06-24 05:56	20m	- / -	F5IXN	-13 / -	4	Partial capture
06-24 05:56	20m	- / -	F6EQZ	-13 / -	7	Partial capture
06-24 05:53	20m	-22 / +6	M0CSD	-12 / -	7	✓ Closing observed
06-24 05:52	20m	-20 / -	C91RU	- / -16	2	Partial capture
06-24 05:51	20m	- / +5	I4KYO	-12 / -	14	Partial capture
06-24 05:51	20m	- / -	M0KSE	-8 / -	3	Partial capture
06-24 05:50	20m	- / -	EA3IDY	-11 / -	5	Partial capture
06-24 05:41	20m	- / -	PC5R	-8 / -	2	Partial capture
06-24 05:39	20m	- / -	DL4JG	-18 / -	4	Partial capture
06-24 05:39	20m	- / -	UA3IHJ	-8 / -	2	Partial capture
06-24 05:38	20m	- / +5	HB9JNM	-8 / -	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
012815 -11 2125  WB0USA UT5ZC KN57
225530  +1 2207  WB0USA D2UY +07
225730  -5  602  WB0USA TJ1GD -02 (x2)
230345 -15 1111  WB0USA SV9QWC -17 (x2)
230715 -18 1985  WB0USA DH2RL JN68 (x3)
230930 +19 2888  WB0USA EA7LGM IM67 (x6)

40m

UTC    dB Audio  Message
061100 -17 2406  WB0USA SP5LST KO02

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