W3A — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM19

Receiver-side FT8 activity involving W3A, decoded by SO8OO in southeastern Poland. 73 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-21.

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 73 FT8 messages attributed to W3A as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -8 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 73

First attributed message: 2026-07-21
Last attributed message: 2026-07-21 03:09 UTC

Observed FT8 message patterns

Attributed sample: 73 messages
Active dates: 1 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -19 to -6 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 51.

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 W3A in decoded directed-looking exchanges:

DL2FX · Fed. Rep. of Germany F4DUZ · France K8IS · United States PD0BOR · Netherlands DL1USB · Fed. Rep. of Germany EA1IOK · Spain EA5TE · Spain HK3G · Colombia IQ4JO · Italy KA3OTH · United States KB8ZIO · United States KC1WZQ · United States

Most frequent locator attributed to W3A

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: FM19 · 13 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,310 km (approx.)
Last such locator decoded: 2026-07-21 03:02 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	W3A S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-21 03:08	40m	-6 / -	RC6D	- / -12	3	Partial capture
07-21 03:05	40m	-6 / -9	RN6HK	-2 / -10	10	✓ Full exchange observed
07-21 03:03	40m	-6 / +4	PD1BER	-14 / -8	4	✓ Full exchange observed
07-21 03:00	40m	- / -16	R1AP	-2 / -	2	Partial capture
07-21 03:00	40m	- / -	RN3OG	-14 / -	8	Partial capture
07-21 02:57	40m	- / -	RN3OG	-14 / -	2	Partial capture
07-21 02:56	40m	- / -16	R1AP	+4 / -	4	Partial capture
07-21 02:53	40m	-10 / -	NK2MC	- / -17	2	Partial capture
07-21 02:50	40m	-9 / -	W1DNS	- / -3	3	✓ Closing fragment
07-21 02:49	40m	- / -	PD0RCQ	+2 / -	2	✓ Closing fragment
07-21 02:47	40m	- / -15	R1AP	+1 / -	10	Partial capture
07-21 02:46	40m	-8 / -	KA3OTH	- / +7	3	✓ Closing fragment
07-21 02:46	40m	- / -	RN1CW	-22 / -	5	Partial capture
07-21 02:45	40m	- / +3	RC6D	-8 / -	5	Partial capture
07-21 02:41	40m	- / -	RN1CW	-20 / -	4	Partial capture
07-21 02:40	40m	-6 / +3	PC2J	+1 / -6	5	✓ Full exchange observed
07-21 02:37	40m	-8 / -	W4MAA	- / -	2	✓ Closing fragment
07-21 02:36	40m	- / -	DL9KM	-24 / -	2	Partial capture
07-21 02:36	40m	-8 / -13	RV3ID	-6 / -7	9	✓ Full exchange observed
07-21 02:36	40m	- / -	US5EAA	-16 / -	2	Partial capture
07-21 02:33	40m	-9 / -	WA2HMM	- / 0	2	✓ Closing fragment
07-21 02:33	40m	- / -	PD0RCQ	+2 / -	3	Partial capture
07-21 02:32	40m	-8 / -	KB8ZIO	- / +10	2	✓ Closing fragment
07-21 02:31	40m	-8 / -	N8PGI	- / -	2	✓ Closing fragment
07-21 02:30	40m	-7 / -	UT3UY	-12 / -	2	✓ Closing observed
07-21 02:27	40m	-8 / -	EA1IOK	- / -6	2	✓ Closing fragment
07-21 02:27	40m	- / -16	R2BDR	-11 / -	2	Partial capture
07-21 02:27	40m	- / -	UA3ZNQ	-2 / -	2	Partial capture
07-21 02:26	40m	-8 / -	SP7TF	- / +2	2	✓ Closing fragment
07-21 02:24	40m	-8 / -15	RZ6L	+5 / -13	5	✓ Full exchange observed
07-21 02:23	40m	-6 / -	HK3G	- / -7	2	✓ Closing fragment
07-21 02:21	40m	-6 / -	KC3ZWZ	- / -2	2	✓ Closing fragment
07-21 02:21	40m	-8 / -7	F1PBZ	-5 / +7	2	Partial capture
07-21 02:21	40m	- / -10	R4ZZ	-12 / -	2	Partial capture
07-21 02:20	40m	-7 / -7	DL1USB	-4 / -	3	✓ Closing observed
07-21 02:12	40m	-12 / -	SP3HIF	- / +1	2	✓ Closing fragment
07-21 02:11	40m	-7 / -7	S55DX	-9 / -	10	✓ Closing observed
07-21 02:10	40m	-20 / -5	IQ4JO	+3 / +10	5	✓ Full exchange observed
07-21 02:10	40m	- / -	PD0RCQ	-12 / -	3	Partial capture
07-21 02:08	40m	-20 / -	EA5TE	- / -	3	✓ Closing fragment
07-19 01:07	20m	- / -7	K8IS	-14 / -	3	✓ Closing fragment
07-19 01:01	20m	- / -17	RW6PA	-12 / -	2	Partial capture
07-19 00:56	20m	- / -	PD0IFI	-11 / -	5	Partial capture
07-19 00:52	20m	- / -17	R3KCW	-12 / -	4	Partial capture
07-19 00:46	20m	- / -1	F4DUZ	-21 / -	3	✓ Closing fragment
07-18 19:42	20m	- / -	RU3SD	-12 / -	2	Partial capture
07-18 19:41	20m	- / -	DL1R	0 / -	8	Partial capture
07-18 19:41	20m	- / -	G8IXM	-14 / -	4	Partial capture
07-18 18:40	20m	- / -20	PD0BOR	-9 / -	2	✓ Closing fragment
07-18 17:25	20m	- / -15	F5RRS	-7 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
030600  +3  373  W3A RN6HK LN14
030615  -6  371  RN6HK W3A -10
030630  -6  373  W3A RN6HK R-09
030645  -7  371  RN6HK W3A -10
030700  -6  373  W3A RN6HK R-09
030700 -10 1120  W3A RN3OG KO91
030715  -6  371  RN6HK W3A RR73
030730  -1  373  W3A RN6HK R-09
030730 -13 1120  W3A RN3OG KO91
030800  +0  373  W3A RN6HK R-09
030800  -7 1120  W3A RN3OG KO91
030815  -7  371  RC6D W3A R-12
030830  -2  373  W3A RN6HK R-09
030845  -6  371  RC6D W3A R-12 (x2)

20m

UTC    dB Audio  Message
005430 -14 1598  W3A R3KCW R-17
005600 -12  772  W3A PD0IFI JO32 (x5)
010100 -13 1503  W3A RW6PA LN23
010130 -19 1131  W3A RD6OZ R-15
010200 -10 1503  W3A RW6PA -17
010230 -20 2222  W3A HB9TIH JN36
010230 -19 1127  W3A DL2FX RR73
010700 -14  851  W3A K8IS -07 (x3)
011100 -13 1131  W3A RQ7O KN98

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