4Z1KN — 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: Israel Most frequent locator attributed to this token: KM71

Receiver-side FT8 activity involving 4Z1KN, decoded by SO8OO in southeastern Poland. 458 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 13 UTC dates in the available aggregate history. Observed between 2026-09-17 and 2026-11-04.

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 458 FT8 messages attributed to 4Z1KN as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (61%), followed by 40 m (36%) and 80 m (3%). Most decodes (91%) 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 -16.1 dB.

Overview

458

Messages attributed

UTC dates decoded

Active 15-min windows

-16.1 dB

Estimated median S/N

Bands

80m · 13 60m · 280 40m · 165

First attributed message: 2026-09-17
Last attributed message: 2026-11-04 03:14 UTC

Observed FT8 message patterns

Attributed sample: 458 messages
Active dates: 13 UTC dates
Estimated median S/N: -16.1 dB
Estimated 10th-90th percentile: -23 to -7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 255, moderate (-15 to -9 dB) 139, strong (≥ -8 dB) 64.

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 4Z1KN in decoded directed-looking exchanges:

F5OYA/P · France ×2 F6BPZ · France IW4AOT · Italy SV1RK · Greece SV2JU · Greece SV9MBH · Crete BI1LWV · China EA5KB · Spain HI8ML · Dominican Republic IU8RFW · Italy UA9SAV · Asiatic Russia 9T0MD · Dem. Rep. of the Congo

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 4Z1KN

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: KM71 · 209 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,325 km (approx.)
Last such locator decoded: 2026-11-04 03:14 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	4Z1KN S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 03:10	40m	-20 / -	NF1Z	- / -	5	Partial capture
11-03 19:06	60m	-16 / -	LA9XKA	- / -16	2	✓ Closing fragment
11-03 06:12	40m	- / -	IK2TCV	-6 / -	2	Partial capture
11-03 06:11	40m	- / -	F4BYA	+11 / -	3	Partial capture
11-03 06:05	40m	- / -	SV1EKI	-16 / -	2	Partial capture
11-03 06:05	40m	- / -	YO6LM	+20 / -	2	Partial capture
11-03 06:01	40m	- / -	F4BYA	0 / -	12	Partial capture
11-03 05:58	40m	- / -	F6FDY	-10 / -	2	Partial capture
11-03 05:58	40m	- / -	YO6LM	+12 / -	2	Partial capture
11-01 20:38	160m	- / -12	SV1RK	-14 / -	2	✓ Closing fragment
11-01 20:32	160m	- / -19	F6BPZ	-12 / -	2	✓ Closing fragment
11-01 03:55	80m	-23 / -	SM7TZK	- / -15	3	✓ Closing fragment
11-01 03:42	80m	- / -	RA6ANN	-12 / -	2	Partial capture
11-01 02:33	80m	- / -15	S51SLO	+8 / -	2	✓ Closing fragment
11-01 02:17	160m	- / -	RY6O	-24 / -	3	Partial capture
11-01 02:15	160m	- / -	9A4ZM	-8 / -	2	Partial capture
11-01 02:12	160m	- / -20	IW4AOT	-4 / -	7	✓ Closing fragment
11-01 02:09	160m	- / -	F4BPO	-4 / -	20	Partial capture
10-31 02:13	160m	- / -	F4BPO	+1 / -	18	Partial capture
10-31 01:55	160m	- / -15	EW4M	+15 / -	5	Partial capture
10-31 01:50	160m	- / -19	PI4DX	+1 / -	57	Partial capture
10-31 01:13	160m	- / -	RY6O	-8 / -	2	Partial capture
10-31 01:09	160m	- / -14	IZ8FWN	-2 / -	2	Partial capture
10-31 00:50	160m	- / -	F4BPO	+4 / -	2	Partial capture
10-25 01:03	80m	- / -	YO4BXX	+2 / -	12	Partial capture
10-25 00:53	80m	-24 / -14	4L1FL	-11 / -	14	✓ Closing observed
10-24 23:34	80m	- / -	R2AL	+10 / -	4	Partial capture
10-24 23:34	80m	- / -	UA4FKT	-2 / -	2	Partial capture
10-24 23:32	80m	- / -7	4X1VL	-10 / -	4	✓ Closing fragment
10-24 04:18	60m	- / -	F4GBD	-6 / -	2	Partial capture
10-24 03:42	60m	-22 / -	Z31B	- / -5	3	Partial capture
10-24 02:54	60m	-21 / -	Z31B	- / -5	20	Partial capture
10-24 02:47	60m	-21 / -	Z31B	- / -5	4	Partial capture
10-24 02:22	60m	-18 / -	Z31B	- / -5	38	Partial capture
10-24 02:02	60m	-24 / -	Z31B	- / -5	2	Partial capture
10-24 01:48	60m	-24 / -	Z31B	- / -5	2	Partial capture
10-24 01:40	60m	- / -	CT7AUT	-12 / -	3	Partial capture
10-24 01:38	60m	-24 / -	Z31B	- / -5	2	Partial capture
10-24 01:34	60m	-22 / -	Z31B	- / -5	2	Partial capture
10-24 01:29	60m	-23 / -	Z31B	- / -5	3	Partial capture
10-24 01:04	60m	-21 / -	Z31B	- / -5	24	Partial capture
10-24 01:00	60m	-24 / -	Z31B	- / -5	2	Partial capture
10-24 00:48	60m	-22 / -	Z31B	- / -5	8	Partial capture
10-24 00:34	60m	-22 / -	Z31B	- / -5	8	Partial capture
10-24 00:14	60m	-21 / -	Z31B	- / -5	26	Partial capture
10-24 00:08	60m	-21 / -	Z31B	- / -5	6	Partial capture
10-24 00:05	60m	-24 / -	Z31B	- / -5	2	Partial capture
10-23 23:53	60m	- / -	G7KHF	-4 / -	3	Partial capture
10-23 23:52	60m	-22 / -	Z31B	- / -5	8	Partial capture
10-23 23:47	60m	-23 / -	Z31B	- / -5	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
060830  -2 2888  4Z1KN F4BYA JN19 (x2)
061200  -3 2025  4Z1KN IK2TCV JN45
061200 +12 2887  4Z1KN F4BYA JN19 (x2)
061300  -9 2025  4Z1KN IK2TCV JN45
061500  -6 1519  4Z1KN HB9IRO -11
061800 -15 1541  4Z1KN IX1ABE -16
025815 -24 1473  NF1Z 4Z1KN KM71 (x7)

60m

UTC    dB Audio  Message
030615 -23 1829  Z31B 4Z1KN -05 (x4)
031130  -2 3098  4Z1KN IU1VJP JO30
031845 -24 1829  Z31B 4Z1KN -05 (x6)
041800  -7  621  4Z1KN F4GBD JN05 (x2)
190645 -17 1525  LA9XKA 4Z1KN R-16 (x2)

160m

UTC    dB Audio  Message
021645 -11 1268  4Z1KN F4BPO JN36 (x2)
021745 -24 1516  4Z1KN RY6O KN87 (x2)
021845  -7 1268  4Z1KN F4BPO JN36 (x2)
022015 -24 1515  4Z1KN RY6O KN87
022045  +0 1269  4Z1KN F4BPO JN36 (x4)
203245 -11 1701  4Z1KN F6BPZ -19 (x2)
203830 -16 1586  4Z1KN SV1RK -12 (x2)

80m

UTC    dB Audio  Message
010600  +3 2022  4Z1KN YO4BXX KN44 (x7)
023300  +9 1578  4Z1KN S51SLO -15 (x2)
033200  -8 1619  4Z1KN SM7TZK -25
034200 -14 1806  4Z1KN RA6ANN KN95 (x2)
035545 -21 1620  SM7TZK 4Z1KN R-15 (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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