WB4EM — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL97

Receiver-side FT8 activity involving WB4EM, decoded by SO8OO in southeastern Poland. 4 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-02.

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 4 FT8 messages attributed to WB4EM as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 m (75%) and 40 m (25%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

S/N pattern not inferred

Bands

40m · 1 20m · 3

First attributed message: 2026-06-10
Last attributed message: 2026-10-02 22:52 UTC

Observed FT8 message patterns

Attributed sample: 4 messages
Active dates: 4 UTC dates
S/N summary: Too few decodes
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with WB4EM in decoded directed-looking exchanges:

R3EDI · European Russia

Most frequent locator attributed to WB4EM

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: EL97 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,549 km (approx.)
Last such locator decoded: 2026-10-02 22:52 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	WB4EM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-02 22:55	40m	- / -17	R2BQM	+5 / -	3	Partial capture
10-02 22:38	40m	- / -13	F1PBZ	-2 / -	2	Partial capture
10-02 22:38	40m	- / -	TA3NK	-3 / -	2	Partial capture
08-31 13:32	20m	- / -	F4DIA	+6 / -	4	Partial capture
08-31 12:50	20m	- / -	DL8EAY	-4 / -	2	Partial capture
08-24 11:21	20m	- / -	M7PHE	-14 / -	6	Partial capture
08-24 11:19	20m	- / -	CT2HEX	-14 / -	2	Partial capture
08-24 11:15	20m	- / -12	CT2HEX	-8 / -	2	Partial capture
08-24 11:11	20m	- / -8	CT2HEX	-14 / -	4	Partial capture
08-24 11:11	20m	- / -	R7OV	+1 / -	6	Partial capture
08-16 22:36	20m	- / -	DL1R	+5 / -	8	Partial capture
08-12 21:51	20m	- / -	UA3DIB	-6 / -	2	Partial capture
08-12 21:50	20m	- / -	DL7RAY	-12 / -	2	Partial capture
08-12 21:50	20m	- / -18	SM7HZK	-13 / -	2	Partial capture
08-12 21:38	20m	- / -	DL1R	+6 / -	9	Partial capture
08-12 21:35	20m	- / -	PD8L	-6 / -	2	Partial capture
08-12 21:34	20m	- / -	IK4LZH	-2 / -	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
223800  -3  840  WB4EM TA3NK KM39
223800  -1 2595  WB4EM F1PBZ -13
223830  -3  840  WB4EM TA3NK KM39
223830  -3 2595  WB4EM F1PBZ -13
225215 -15  840  EA8UP WB4EM EL97
225500  +6  840  WB4EM R2BQM -17 (x3)

20m

UTC    dB Audio  Message
111945 -13  776  WB4EM CT2HEX IM58
112145 -13 2027  WB4EM M7PHE IO93 (x6)
124615 +15  910  WB4EM IU1CYA -19 (x2)
125015  -4 1526  WB4EM DL8EAY JO31 (x2)
133215 +10 1289  WB4EM F4DIA JN36 (x4)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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