W3DF — 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: FM19

Receiver-side FT8 activity involving W3DF, decoded by SO8OO in southeastern Poland. 24 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-06 and 2026-11-02.

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 24 FT8 messages attributed to W3DF as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (92%), followed by 80 m (8%). 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

80m · 2 40m · 22

First attributed message: 2026-09-06
Last attributed message: 2026-11-02 02:53 UTC

Observed FT8 message patterns

Attributed sample: 24 messages
Active dates: 4 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -20 to -6 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) 11.

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 W3DF in decoded directed-looking exchanges:

CX2SA · Uruguay DL8HXP · Fed. Rep. of Germany DL8WEM · Fed. Rep. of Germany F5PBG · France IZ7DOK · Italy KC4WQ · United States R7DX · European Russia RA2FCF · Kaliningrad SV2KD · Greece TA3NK · Asiatic Turkey DL3OCF · Fed. Rep. of Germany IZ2QPP · Italy

Most frequent locator attributed to W3DF

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 · 8 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,310 km (approx.)
Last such locator decoded: 2026-09-06 03:10 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	W3DF S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-02 02:52	80m	- / -6	PC40EUDXF	-12 / -	2	Partial capture
11-02 02:51	80m	- / -	EA2CCG	-11 / -	3	Partial capture
11-02 02:51	80m	- / -8	6W/IK2HKT	-4 / -	3	Partial capture
10-05 04:35	80m	- / -12	DL3OCF	+2 / -	2	✓ Closing fragment
10-05 04:34	80m	- / -19	YO7CFD	-1 / -	3	✓ Closing fragment
10-05 04:31	80m	- / -19	YO7CFD	+7 / -	2	Partial capture
10-05 04:31	80m	- / -12	DL3OCF	+4 / -	2	Partial capture
10-05 04:31	80m	- / -	IZ2QPP	-1 / -	4	✓ Closing fragment
10-05 04:31	80m	- / 0	ON7GB	+2 / -	6	✓ Closing fragment
09-23 03:57	40m	-12 / -	RA2FCF	- / -12	5	✓ Closing fragment
09-23 03:56	40m	- / -	R2EC	0 / -	2	Partial capture
09-23 03:55	40m	-13 / -	IZ7DOK	-1 / -11	2	✓ Closing observed
09-23 03:55	40m	- / -	EA3HRC	-4 / -	2	Partial capture
09-23 03:55	40m	- / -	UR9QQ	-12 / -	4	Partial capture
09-23 03:45	40m	- / -	R6TA	-1 / -	2	Partial capture
09-23 03:44	40m	- / -	R2EC	+4 / -	2	Partial capture
09-12 04:13	40m	- / -16	DL8WEM	-1 / -	4	✓ Closing fragment
09-12 04:10	40m	- / -10	SV2KD	0 / -	2	✓ Closing fragment
09-12 04:03	40m	- / -	EA5IT	-1 / -	2	Partial capture
09-12 03:56	40m	- / -11	TA3NK	-12 / -	14	✓ Closing fragment
09-12 03:54	40m	- / -11	R7DX	+8 / -	3	✓ Closing fragment
09-06 03:08	40m	-20 / -	Z62NS	- / -	5	Partial capture
09-06 03:04	40m	-6 / -2	F5PBG	+9 / -1	5	✓ Full exchange observed
09-06 03:02	40m	-8 / -	DL8HXP	- / -6	2	✓ Closing fragment
09-06 03:00	40m	-8 / -	CX2SA	- / -8	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
043500  -2 1803  W3DF ON7GB 73
043500  -1 1978  W3DF DL3OCF -12 (x2)
043600  -1 1696  W3DF YO7CFD -19 (x2)
043700  -4 1742  W3DF DO2MOG JO31
025100  -1  614  W3DF 6W/IK2HKT -08
025130  -9 1304  W3DF EA2CCG IN92
025130  -4  614  W3DF 6W/IK2HKT -10 (x2)
025230 -12  615  W3DF PC40EUDXF -06 (x2)
025300 -15 1304  W3DF EA2CCG IN92
025315 -16 1119  DB100FT W3DF R-04
025330 -10 1303  W3DF EA2CCG IN92

40m

UTC    dB Audio  Message
035500  -4 1290  W3DF EA3HRC JN11
035530 -12 1490  W3DF UR9QQ KN77
035530  -4 1290  W3DF EA3HRC JN11
035545 -13  762  IZ7DOK W3DF R-11
035600 -13 1490  W3DF UR9QQ KN77
035600  -1  619  W3DF IZ7DOK RR73
035630 -12 1490  W3DF UR9QQ KN77
035630  +4 2812  W3DF R2EC KO82
035700  +6  763  W3DF UA3ZUX KO90
035700  -5 2812  W3DF R2EC KO82
035715 -13  762  RA2FCF W3DF -12 (x5)

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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