W5MX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM77

Receiver-side FT8 activity involving W5MX, decoded by SO8OO in southeastern Poland. 58 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-30.

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 58 FT8 messages attributed to W5MX as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (88%), followed by 40 m (12%). In this small sample, the estimated median decoder S/N was +5 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+5 dB

Estimated median S/N

Bands

40m · 7 20m · 51

First attributed message: 2026-06-07
Last attributed message: 2026-08-30 11:34 UTC

Observed FT8 message patterns

Attributed sample: 58 messages
Active dates: 2 UTC dates
Estimated median S/N: +5 dB
Estimated 10th-90th percentile: -18 to +8 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 45.

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 W5MX in decoded directed-looking exchanges:

DK9ZQ · Fed. Rep. of Germany F1PPH · France G8IXM · England PA4RFS · Netherlands PD0HLA · Netherlands PD9FLX · Netherlands DL3MIB · Fed. Rep. of Germany DL3OCF · Fed. Rep. of Germany OK1OBR · Czech Republic S53F · Slovenia

Most frequent locator attributed to W5MX

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: EM77 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,943 km (approx.)
Last such locator decoded: 2026-08-30 11:33 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	W5MX S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 11:54	20m	- / -2	G8IXM	-5 / -	3	Partial capture
08-30 11:50	20m	- / -	F4MWC	-4 / -	3	Partial capture
08-30 11:47	20m	- / -	F1PPH	-6 / -	2	✓ Closing fragment
08-30 11:43	20m	- / -12	F4MWC	+1 / -	7	Partial capture
08-30 11:42	20m	- / -15	DK9ZQ	+1 / -	3	✓ Closing fragment
08-30 11:39	20m	- / -16	DH7OM	-7 / -	3	Partial capture
08-30 11:38	20m	- / -15	PD9FLX	-4 / -	3	✓ Closing fragment
08-30 11:34	20m	- / -17	PD0HLA	-9 / -	4	✓ Closing fragment
08-30 07:05	40m	- / -	9A4ZM	+6 / -	3	Partial capture
08-30 05:39	40m	- / -	9A4ZM	-3 / -	3	Partial capture
08-30 04:54	40m	- / -	DL3OCF	+9 / -	3	✓ Closing fragment
08-30 04:54	40m	- / -14	F1PBZ	-2 / -	2	Partial capture
08-30 04:51	40m	- / -	DL3MIB	+15 / -	3	✓ Closing fragment
08-30 04:48	40m	- / -	F5JQF	-10 / -	6	Partial capture
08-30 04:47	40m	- / -	OZ1TDK	-8 / -	2	Partial capture
08-30 04:35	40m	- / -	PE1NMM	-1 / -	9	Partial capture
08-30 04:31	40m	- / -	PE1NMM	-9 / -	3	Partial capture
08-30 04:26	40m	- / -	F5JQF	0 / -	11	Partial capture
08-30 04:23	40m	- / -	SV1MOZ	-14 / -	3	Partial capture
08-30 04:01	40m	- / -15	YO4NF	-3 / -	2	Partial capture
08-30 04:00	40m	-14 / -	S53F	-6 / -	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
114415  +4 1028  W5MX F4MWC JN03 (x5)
114715 -11 1277  W5MX F1PPH JN07 (x2)
115015  -3  780  W5MX G8IXM R-02
115015  -2 1028  W5MX F4MWC JN03 (x3)
115445  -6  927  W5MX G8IXM R-02 (x4)

40m

UTC    dB Audio  Message
045130  -8 3040  W5MX F5JQF JN26
045130 +14 1071  W5MX DL3MIB JN57 (x3)
045400  -2 2787  W5MX F1PBZ -14
045400  +1  280  W5MX DL3OCF JO51
045430  -1 2786  W5MX F1PBZ -14
045430 +10  280  W5MX DL3OCF JO51 (x2)
053945  -2 1248  W5MX 9A4ZM JN86 (x6)

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee