F4LSJ — 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: France Most frequent locator attributed to this token: JN25

Receiver-side FT8 activity involving F4LSJ, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 80m, 60m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-12 and 2026-10-15.

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 28 FT8 messages attributed to F4LSJ as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (82%), followed by 80 m (18%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 5 60m · 23

First attributed message: 2026-10-12
Last attributed message: 2026-10-15 20:39 UTC

Observed FT8 message patterns

Attributed sample: 28 messages
Active dates: 2 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -16 to -6 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 10.

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 F4LSJ in decoded directed-looking exchanges:

DJ1TU · Fed. Rep. of Germany F6FHZ · France G0AZH · England G6PWS · England ON8LX · Belgium PE1NPS · Netherlands TA4SSK · Asiatic Turkey DK6WS · Fed. Rep. of Germany DK7ZT · Fed. Rep. of Germany US2YW · Ukraine

Most frequent locator attributed to F4LSJ

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: JN25 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,346 km (approx.)
Last such locator decoded: 2026-10-15 20:37 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	F4LSJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-15 20:38	80m	-18 / -	DK7ZT	+12 / -7	2	✓ Closing observed
10-15 20:31	60m	- / -	SV1EKI	-15 / -	3	Partial capture
10-15 20:30	60m	-15 / -5	ON8LX	-19 / -11	5	✓ Full exchange observed
10-15 20:28	60m	-10 / -	TF1A	- / -	2	Partial capture
10-15 20:27	60m	-8 / -12	PE1NPS	+4 / -	4	✓ Closing observed
10-15 20:26	60m	- / -	SV1EKI	-13 / -	7	Partial capture
10-15 20:24	60m	-6 / -	TA4SSK	- / -19	3	✓ Closing fragment
10-15 20:23	60m	-12 / -8	DJ1TU	-1 / -11	4	✓ Full exchange observed
10-15 20:21	60m	-10 / -	G0AZH	- / -1	2	✓ Closing fragment
10-15 20:20	60m	-10 / +4	F6FHZ	-19 / -6	3	✓ Full exchange observed
10-12 20:29	80m	-8 / -	SP9MOC	+5 / -7	2	Partial capture
10-12 20:21	60m	-13 / -3	G6PWS	-10 / -8	5	✓ Full exchange observed
10-12 20:20	60m	-12 / -	YL3FW	- / -	2	Partial capture
10-12 20:19	60m	- / -	DK7UY	-3 / -	2	Partial capture
10-12 20:19	60m	- / -	HA7TM	-20 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
202600  -2  909  DK6WS F4LSJ 73
202730  -5  909  US2YW F4LSJ RR73
202915  +5 1264  F4LSJ SP9MOC JO90
203000  -8  909  SP9MOC F4LSJ -07
203700 -16 1425  CQ F4LSJ JN25
203845 +12  826  F4LSJ DK7ZT RR73
203900 -18 1425  DK7ZT F4LSJ R-07

60m

UTC    dB Audio  Message
202800 -13 2330  F4LSJ SV1EKI KM18
202800  +0  331  F4LSJ PE1NPS 73
202815 -14 1205  TF1A F4LSJ JN25
202830 -13 2330  F4LSJ SV1EKI KM18 (x3)
202945  -7  964  TF1A F4LSJ JN25
203030 -18 1455  ON8LX F4LSJ JN25
203045 -17 1457  F4LSJ ON8LX -05
203100 -12 1455  ON8LX F4LSJ R-11
203115 -21 1457  F4LSJ ON8LX RR73
203130 -14 1455  ON8LX F4LSJ 73
203145 -13 2330  F4LSJ SV1EKI KM18 (x3)

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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