WO4D — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL98

Receiver-side FT8 activity involving WO4D, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-24.

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 34 FT8 messages attributed to WO4D as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (82%), followed by 40 m (18%). Most decodes (100%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (91%); the estimated median was -19 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

40m · 6 20m · 28

First attributed message: 2026-06-08
Last attributed message: 2026-08-24 23:11 UTC

Observed FT8 message patterns

Attributed sample: 34 messages
Active dates: 5 UTC dates
Estimated median S/N: -19 dB
Estimated 10th-90th percentile: -23 to -16 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 0.

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 WO4D in decoded directed-looking exchanges:

PI4DX · Netherlands IU0NAD · Italy

Most frequent locator attributed to WO4D

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: EL98 · 17 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,464 km (approx.)
Last such locator decoded: 2026-08-24 23:11 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	WO4D S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-24 23:06	40m	-22 / -16	IU0NAD	-2 / -4	7	✓ Full exchange observed
08-19 19:18	20m	- / -	DL1R	-8 / -	7	Partial capture
08-03 14:41	20m	- / -	PA2EW	-13 / -	3	Partial capture
08-02 13:27	20m	- / -	F1UPT	-17 / -	2	Partial capture
08-02 13:23	20m	- / -	G8IXM	-11 / -	2	Partial capture
08-01 11:17	20m	- / -17	PD0LH	-16 / -	7	Partial capture
07-31 12:34	20m	- / -	F1PSX	-10 / -	2	Partial capture
07-21 17:52	20m	- / -17	DK9ZQ	-10 / -	5	Partial capture
07-21 17:19	20m	- / -16	F1PBZ	-3 / -	2	Partial capture
07-10 18:21	20m	- / -	UR4QWW	-18 / -	2	Partial capture
07-09 14:08	20m	- / -15	PI4DX	-11 / -	3	✓ Closing fragment
07-09 13:26	20m	- / -	DH3KR	-12 / -	4	Partial capture
07-09 13:23	20m	- / -	G4HUE	-11 / -	2	Partial capture
07-07 19:32	20m	- / -	DL7VGU	-2 / -	3	Partial capture
07-02 23:42	20m	-22 / -	SP6CE	- / -	3	Partial capture
07-02 18:50	20m	- / -14	GI5CEO	-8 / -	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
230345 -23 1707  RI1FJL WO4D EL98
230600  -3 2079  WO4D IU0NAD JN62 (x2)
230645 -24 1707  RI1FJL WO4D EL98
230715 -24 1706  IU0NAD WO4D -04 (x2)
230800  -8 2079  WO4D IU0NAD R-16
230815 -20 1707  IU0NAD WO4D RR73
230830  -5 2079  WO4D IU0NAD 73
231115 -21 1707  RI1FJL WO4D EL98

20m

UTC    dB Audio  Message
132745 -17 1640  WO4D F1UPT IN98 (x2)
144145 -16 1451  WO4D PA2EW JO22 (x3)
150215 -14  593  WO4D EA1IOK IN62
191515 -16 1028  WO4D G6MTI IO81
191845  -7 2658  WO4D DL1R JN58 (x7)
222430  -9 1520  V31DL WO4D EL98

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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