ZL4AS — 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: New Zealand Most frequent locator attributed to this token: RE43

Receiver-side FT8 activity involving ZL4AS, decoded by SO8OO in southeastern Poland. 142 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-11.

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 142 FT8 messages attributed to ZL4AS as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (92%), followed by 40 m (8%). Most decodes (100%) fell within the six-hour window 01:00-07:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (61%); the estimated median was -17 dB.

Overview

142

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

40m · 11 20m · 131

First attributed message: 2026-06-12
Last attributed message: 2026-10-11 05:36 UTC

Observed FT8 message patterns

Attributed sample: 142 messages
Active dates: 15 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -20 to -11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 86, moderate (-15 to -9 dB) 48, strong (≥ -8 dB) 8.

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 ZL4AS in decoded directed-looking exchanges:

DF1IH · Fed. Rep. of Germany DK1WU · Fed. Rep. of Germany DL1NB · Fed. Rep. of Germany DL4FAP · Fed. Rep. of Germany F5HND · France F5MUX · France G3AKA · England GJ0KYZ · Jersey IU1TLG · Italy IZ5IMD · Italy ON8DM · Belgium OP9T · Belgium

Most frequent locator attributed to ZL4AS

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: RE43 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 17,576 km (approx.)
Last such locator decoded: 2026-10-11 05:36 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	ZL4AS S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 08:20	40m	- / -4	DL1NB	-13 / -	5	✓ Closing fragment
10-22 08:19	40m	- / -5	ON8DM	-18 / -	3	✓ Closing fragment
10-22 08:18	40m	- / -	DL2LTH	-9 / -	6	Partial capture
10-22 08:18	40m	- / -20	LA7DMA	-19 / -	2	Partial capture
10-22 08:18	40m	- / -	PD1SL	-16 / -	4	Partial capture
10-22 08:12	40m	- / -15	LA7DMA	-17 / -	7	Partial capture
10-22 08:12	40m	- / -	OH2CGU	-9 / -	3	Partial capture
10-22 08:10	40m	- / -	DG3AWF	-17 / -	3	Partial capture
10-22 08:08	40m	- / -	DL2YCD	-10 / -	2	Partial capture
10-22 08:08	40m	- / -	ON7IO	-15 / -	7	Partial capture
10-22 08:05	40m	- / -11	DL4FAP	0 / -	6	✓ Closing fragment
10-22 08:04	40m	- / -	S51NA	-3 / -	16	Partial capture
10-22 08:01	40m	- / -19	DF1IH	+5 / -	2	✓ Closing fragment
10-22 08:00	40m	- / -	DL4FAP	-1 / -	3	Partial capture
10-22 07:58	40m	- / -17	OP9T	-11 / -	3	✓ Closing fragment
10-22 07:56	40m	- / -	PD0ME	-6 / -	10	Partial capture
10-22 07:55	40m	- / -5	G3AKA	-9 / -	4	✓ Closing fragment
10-22 07:50	40m	- / -	ON6DZ	-21 / -	2	Partial capture
10-22 07:45	40m	- / -	DG0NE	-14 / -	4	Partial capture
10-22 07:43	40m	- / -	HA8CE	-4 / -	2	Partial capture
10-22 07:41	40m	- / -	DG0NE	-16 / -	4	Partial capture
10-22 07:39	40m	- / -	HA8CE	-4 / -	2	Partial capture
10-20 07:58	40m	- / -6	F5MUX	-4 / -	4	✓ Closing fragment
10-18 07:58	40m	- / -	PD1EN	-18 / -	2	Partial capture
10-16 04:44	40m	- / -13	PI4DX	-6 / -	2	✓ Closing fragment
10-12 08:04	40m	- / -	G6PWS	-21 / -	3	Partial capture
10-12 07:52	40m	- / -	G4OFR	-14 / -	2	Partial capture
10-12 07:47	40m	- / -10	OT8T	-13 / -	6	✓ Closing fragment
10-12 07:45	40m	- / -23	DK1WU	+4 / -	4	✓ Closing fragment
10-12 07:40	40m	- / -19	F5HND	-16 / -	10	✓ Closing fragment
10-11 05:37	40m	- / -	DL7UHD	-17 / -	5	Partial capture
10-11 05:36	40m	-14 / +4	Z62NS	-10 / -	3	✓ Closing observed
10-11 05:36	40m	- / +1	DG0JK	-3 / -	7	Partial capture
10-11 05:34	40m	- / -	IK0QDM	-8 / -	5	Partial capture
10-11 05:34	40m	- / -	UA1CEI	+1 / -	11	Partial capture
10-11 05:32	40m	-17 / -18	R1BED	-17 / -	3	✓ Closing observed
10-11 05:31	40m	- / -	DG0JK	+6 / -	2	Partial capture
10-11 05:30	40m	-14 / -	Z62NS	- / -2	3	Partial capture
10-10 07:13	40m	- / -14	F1PBZ	-3 / -	4	Partial capture
10-07 08:13	40m	- / -	PD0HCV	-20 / -	4	Partial capture
10-07 08:13	40m	- / -	OT8T	-9 / -	3	Partial capture
10-07 08:13	40m	- / -	PD1EN	-19 / -	6	Partial capture
10-07 05:57	40m	- / -	DL7FD	-6 / -	11	Partial capture
10-07 05:54	40m	- / -13	S55A	+1 / -	4	✓ Closing fragment
10-07 05:52	40m	- / -26	RW3XZ	-1 / -	5	Partial capture
10-07 05:52	40m	- / -	DL5KR	-3 / -	3	Partial capture
10-07 05:51	40m	- / -17	GW4FRX	+1 / -	5	Partial capture
10-07 05:49	40m	- / -1	IU1TLG	-7 / -	5	✓ Closing fragment
10-07 05:47	40m	- / -	PA1VW	-17 / -	3	Partial capture
10-07 05:46	40m	-13 / -	S51CC	0 / -11	7	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
082000 -21 1642  ZL4AS ON8DM RR73
082000  -9 1933  ZL4AS DL2LTH JO51 (x2)
082030 -15  979  ZL4AS DL1NB -04
082100  -8 1934  ZL4AS DL2LTH JO51
082100 -14  979  ZL4AS DL1NB -04
082130 -13  878  ZL4AS G6PWS IO91
082130  -8 1933  ZL4AS DL2LTH JO51
082130 -10  979  ZL4AS DL1NB RR73
082200  -6 1933  ZL4AS DL2LTH JO51
082200 -14  979  ZL4AS DL1NB RRR (x2)
082330  -6 2908  ZL4AS G3KMQ IO70
082500 -14  878  ZL4AS G6PWS IO91
082630 -19 1113  ZL4AS LA7DMA -20

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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