W5DOO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM50

Receiver-side FT8 activity involving W5DOO, decoded by SO8OO in southeastern Poland. 26 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-09.

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 26 FT8 messages attributed to W5DOO as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

20m · 26

First attributed message: 2026-06-09
Last attributed message: 2026-06-09 03:28 UTC

Observed FT8 message patterns

Attributed sample: 26 messages
Active dates: 1 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -17 to -9 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 1.

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 W5DOO in decoded directed-looking exchanges:

EB5AL · Spain IQ4JO · Italy RK6A · European Russia RX9WN · Asiatic Russia UT5ECZ · Ukraine

Most frequent locator attributed to W5DOO

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: EM50 · 6 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,779 km (approx.)
Last such locator decoded: 2026-06-09 03:27 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	W5DOO S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-29 03:29	40m	- / -	IU2EBR	-18 / -	5	Partial capture
08-29 03:29	40m	- / -14	UR3HC	+2 / -	2	Partial capture
08-02 04:50	40m	- / -	DF8RU	-9 / -	2	Partial capture
08-02 04:45	40m	- / -	II3DRC	-12 / -	2	Partial capture
08-02 04:31	40m	- / -19	DL3OCF	-5 / -	2	Partial capture
08-02 04:26	40m	- / -	F5RRS	-18 / -	2	Partial capture
08-02 04:20	40m	- / -	PB0AKY	-21 / -	9	Partial capture
08-02 04:19	40m	- / -	DH1BAS	+4 / -	3	Partial capture
07-30 02:56	40m	- / -	I1RJP	-8 / -	3	Partial capture
07-08 02:52	20m	- / -6	UT5ECZ	+4 / -	2	✓ Closing fragment
07-08 02:41	40m	- / -	IQ4JO	0 / -	2	Partial capture
07-03 03:08	20m	- / -	UR4QFP	-3 / -	2	Partial capture
07-03 03:00	20m	- / -	UR4QWW	-18 / -	4	Partial capture
06-30 03:17	20m	- / -16	RK6A	+8 / -	3	✓ Closing fragment
06-24 02:30	20m	- / -18	IQ4JO	+5 / -	3	✓ Closing fragment
06-23 03:48	20m	- / -16	RX9WN	-3 / -	4	✓ Closing fragment
06-23 03:34	20m	- / -	EB5AL	-2 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
031715  +6  513  W5DOO RK6A LN04 (x3)
031945  -8 2528  W5DOO F5HNQ -14
032045 -12  761  W5DOO LZ2VQ KN23
032145 -21 1320  W5DOO DL1UDO JO31
030045 -14 1871  W5DOO UR4QWW KN77 (x4)
030845  -5 2632  W5DOO UR4QFP KN77 (x2)
025200  +4  684  W5DOO UT5ECZ -06 (x2)
035030  -7  542  W5DOO TA3TK R-11

40m

UTC    dB Audio  Message
043530 -11  662  W5DOO PD9JHB JO33
043530  +0  430  W5DOO DH5BM JO41
043930  -8  431  W5DOO PE1NMM JO32
044530 -11 2316  W5DOO II3DRC JN56 (x2)
044730 -11  430  W5DOO DH5BM JO41
045030  -8 1534  W5DOO DF8RU JN68 (x2)
032930  +3  855  W5DOO UR3HC -14
032930 -21 1278  W5DOO IU2EBR JN55
033000  +2  855  W5DOO UR3HC -14
033100 -24 1279  W5DOO IU2EBR JN55 (x4)

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