WA4FU — 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: EM74

Receiver-side FT8 activity involving WA4FU, decoded by SO8OO in southeastern Poland. 2,435 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 34 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-30.

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 2,435 FT8 messages attributed to WA4FU as the transmitting token by decoded message structure across 34 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (96%), followed by 40 m (4%). Most decodes (79%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

2,435

Messages attributed

UTC dates decoded

225

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 102 20m · 2,333

First attributed message: 2026-06-06
Last attributed message: 2026-09-30 05:00 UTC

Observed FT8 message patterns

Attributed sample: 2,435 messages
Active dates: 34 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -18 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 563, moderate (-15 to -9 dB) 920, strong (≥ -8 dB) 952.

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 WA4FU in decoded directed-looking exchanges:

SP6AMI · Poland ×3 W9MDM · United States ×3 OD5ZZ · Lebanon ×2 R3TY · European Russia ×2 RV3X · European Russia ×2 S57TW · Slovenia ×2 7Z1CZ · Saudi Arabia 8P6GY · Barbados 8Z1IT · Saudi Arabia 9A5EGN · Croatia 9A5VS · Croatia 9A6NTK · Croatia

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to WA4FU

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: EM74 · 537 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,198 km (approx.)
Last such locator decoded: 2026-09-30 05:00 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	WA4FU S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-12 02:59	40m	- / -	SV5AZK	-20 / -	2	Partial capture
09-30 06:40	40m	- / -14	DL4MD	-14 / -	3	✓ Closing fragment
09-30 06:38	40m	- / -	PD4RD	+5 / -	3	Partial capture
09-30 06:36	40m	- / -	IK2YYO	-12 / -	3	Partial capture
09-30 06:35	40m	- / -14	DJ7BU	-4 / -	6	✓ Closing fragment
09-30 06:31	40m	- / -18	G4YAN	-10 / -	2	Partial capture
09-30 06:25	40m	- / -	IX1CVF	-14 / -	2	Partial capture
09-30 06:24	40m	- / -13	DK3UA	-7 / -	2	✓ Closing fragment
09-30 06:17	40m	- / -	OM3PC	-6 / -	4	Partial capture
09-30 05:47	40m	- / 0	IZ3CIX	+8 / -	5	✓ Closing fragment
09-30 05:47	40m	- / -3	PA0LDE	-10 / -	3	✓ Closing fragment
09-30 05:46	40m	- / -2	HB9FGO	-2 / -	2	✓ Closing fragment
09-30 05:36	40m	- / -10	PA4G	-8 / -	2	✓ Closing fragment
09-30 05:36	40m	- / -18	SV8ZI	-15 / -	3	Partial capture
09-30 05:21	40m	- / -13	DJ7JB	-12 / -	2	Partial capture
09-30 05:20	40m	- / -12	SP1ETT	-8 / -	3	✓ Closing fragment
09-30 05:08	40m	- / -5	OT7K	+14 / -	2	✓ Closing fragment
09-30 05:04	40m	- / -9	IK4RVY	-12 / -	6	✓ Closing fragment
09-30 05:01	40m	- / -8	DK1UJ	-4 / -	2	Partial capture
09-30 04:59	40m	- / -4	SV8NAJ	-22 / -	2	Partial capture
09-30 04:58	40m	- / +1	OE6BME	-7 / -	3	✓ Closing fragment
09-30 04:54	40m	- / -	DM8MH	-11 / -	3	Partial capture
09-30 04:51	40m	- / +2	F4EGM	-7 / -	3	✓ Closing fragment
09-27 08:14	40m	- / -	F4EIK	-21 / -	2	Partial capture
09-27 08:09	40m	- / -	IK3HTH	-14 / -	4	Partial capture
09-27 08:07	40m	- / -	IK1JUS	-20 / -	2	Partial capture
09-27 08:03	40m	- / -	IK1JUS	-24 / -	3	Partial capture
09-27 07:21	40m	- / -	PA1CG	-12 / -	2	Partial capture
09-27 07:15	40m	- / -12	DK1ML	+2 / -	5	Partial capture
09-26 02:37	40m	- / -	F4MXE	-19 / -	2	Partial capture
09-26 02:25	40m	-17 / -	S57MPU	- / -13	3	✓ Closing fragment
09-26 02:20	40m	-18 / -	N4BWW	- / -7	2	✓ Closing fragment
09-26 02:13	40m	- / +1	IK0QDM	-6 / -	4	✓ Closing fragment
09-26 02:11	40m	-19 / -11	IU8RFW	-17 / -	6	✓ Closing observed
09-26 02:09	40m	-18 / -	EA4ITG	-17 / -	4	✓ Closing observed
09-26 02:04	40m	- / -	IU8RFW	-16 / -	2	Partial capture
09-26 01:59	40m	- / -	IU8RFW	-11 / -	2	Partial capture
09-20 07:05	40m	- / -	IU3ACL	-3 / -	23	Partial capture
09-20 07:03	40m	- / -	DL7ARV	-1 / -	4	Partial capture
09-20 06:59	40m	- / -6	DL1FAM	-2 / -	3	✓ Closing fragment
09-20 06:56	40m	- / -	DH0BRO	-2 / -	6	Partial capture
09-20 06:56	40m	- / -	SM7HZK	+1 / -	9	Partial capture
09-20 06:56	40m	- / -	SP7ENW	+4 / -	3	Partial capture
09-20 06:55	40m	- / -	OE6TNO	-2 / -	2	Partial capture
09-20 06:53	40m	- / -	PD5B	-6 / -	2	Partial capture
09-20 06:53	40m	- / -	DL7ARV	-1 / -	6	Partial capture
09-20 06:51	40m	- / -	OE6TNO	-1 / -	4	Partial capture
09-20 06:49	40m	- / -	PD1EN	-11 / -	6	Partial capture
09-20 06:32	40m	- / -10	DL1FAM	+3 / -	8	Partial capture
09-20 06:31	40m	- / -11	IZ7NMD	+1 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
063745  -3 1219  WA4FU DJ7BU 73
063845  +6 2877  WA4FU PD4RD JO21 (x3)
064045 -14 1097  WA4FU DL4MD JN49 (x3)
064315 -13  474  WA4FU EB3DBR R-04
064345  +3 2813  WA4FU SP1JQJ JO73
015430  -7 1335  WA4FU DK8HC/P R+13
015715 -19 1736  WA4FU SV5AZK KM46
021130 -14 1179  WA4FU HI3LER R+01
023800  -7 2764  WA4FU PJ4/DH8BQA R+08
025915 -20 1737  WA4FU SV5AZK KM46 (x2)

20m

UTC    dB Audio  Message
230100 -15 1916  WA4FU OE8RPK JN76 (x5)
232345 -11 1325  WA4FU IK5IVP JN53 (x2)
232900 -10 1916  WA4FU OE8RPK JN76 (x8)

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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