F4LZU — 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: JN03

Receiver-side FT8 activity involving F4LZU, decoded by SO8OO in southeastern Poland. 92 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-31.

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 92 FT8 messages attributed to F4LZU as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (45%), followed by 40 m (35%) and 10 m (21%). Several six-hour UTC windows tied for the largest share (84%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

40m · 32 20m · 41 10m · 19

First attributed message: 2026-06-08
Last attributed message: 2026-08-31 21:19 UTC

Observed FT8 message patterns

Attributed sample: 92 messages
Active dates: 5 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -19 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 50, 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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with F4LZU in decoded directed-looking exchanges:

DD5JC · Fed. Rep. of Germany DK3HV · Fed. Rep. of Germany SV8GXC · Greece CT7AUT · Portugal DJ0ABM · Fed. Rep. of Germany EA1FNT · Spain F1IQH · France F4NJZ · France F4SNF · France ON2BCB · Belgium RX3ASQ · European Russia S57NCP · Slovenia

Most frequent locator attributed to F4LZU

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: JN03 · 49 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,732 km (approx.)
Last such locator decoded: 2026-08-31 21:17 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	F4LZU S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-31 21:20	40m	- / -3	F4SNF	-16 / -	2	✓ Closing fragment
08-31 21:19	40m	-14 / -	EA1FNT	-8 / 0	2	✓ Closing observed
08-31 21:18	40m	-11 / -7	F4NJZ	-11 / -1	5	✓ Full exchange observed
08-31 21:09	40m	- / -9	RX3ASQ	-18 / -	2	✓ Closing fragment
08-31 21:07	40m	-8 / -2	2E0GKF	-12 / -9	4	Partial capture
08-31 21:06	40m	-11 / -	ON6DL	- / -12	2	Partial capture
08-31 21:03	40m	-11 / -	CT7AUT	- / -14	3	✓ Closing fragment
08-31 20:59	40m	-11 / -	W2UQ	- / -	3	Partial capture
08-31 20:46	40m	-4 / -5	DJ0ABM	-4 / -	3	✓ Closing observed
08-31 20:44	40m	-7 / -7	ON2BCB	-10 / -	3	✓ Closing observed
08-31 20:39	40m	- / -	DF8RU	+8 / -	2	Partial capture
08-31 20:28	40m	- / -7	F1PBZ	-4 / -	2	Partial capture
08-31 20:27	40m	- / -1	F1IQH	-10 / -	3	✓ Closing fragment
08-10 17:34	20m	-13 / -11	LZ1ZF	-9 / -	4	Partial capture
08-10 17:32	20m	-12 / -	G4YLJ	- / -18	3	Partial capture
08-10 17:27	20m	-18 / -	DD5JC	- / -	4	✓ Closing fragment
08-10 17:21	20m	-18 / -	5B4ARQ	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
210945 -15 1180  F4LZU RX3ASQ -09 (x2)
211615 -15  822  CQ F4LZU JN03 (x4)
211800  -9 2405  F4LZU F4NJZ JN25
211815  -8  822  F4NJZ F4LZU -01
211830 -11 2405  F4LZU F4NJZ R-07
211845 -14  822  F4NJZ F4LZU RR73
211900 -12 2405  F4LZU F4NJZ 73
211915 -14  822  EA1FNT F4LZU +00
212000  -8  983  F4LZU EA1FNT 73
212030 -13 2100  F4LZU F4SNF -03 (x2)

20m

UTC    dB Audio  Message
172430 -20 1271  CQ F4LZU JN03 (x2)
172700 -18 1341  DD5JC F4LZU JN03 (x4)
172900 -18 1341  YO9CX F4LZU R-03
173130 -15 1242  SV8GXC F4LZU 73
173200 -12 1242  G4YLJ F4LZU JN03 (x3)
173400 -13  994  LZ1ZF F4LZU JN03
173415 -12 1138  F4LZU LZ1ZF -11
173430 -13  994  LZ1ZF F4LZU JN03
173445  -6 1138  F4LZU LZ1ZF -09

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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