WZ4K — 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: FM17

Receiver-side FT8 activity involving WZ4K, decoded by SO8OO in southeastern Poland. 302 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 30 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-10-31.

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 302 FT8 messages attributed to WZ4K as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (80%), followed by 40 m (20%). Most decodes (98%) fell within the six-hour window 23:00-05:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (65%); the estimated median was -18 dB.

Overview

302

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

80m · 243 40m · 59

First attributed message: 2026-06-18
Last attributed message: 2026-10-31 05:06 UTC

Observed FT8 message patterns

Attributed sample: 302 messages
Active dates: 30 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -24 to -10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 195, moderate (-15 to -9 dB) 93, strong (≥ -8 dB) 14.

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 WZ4K in decoded directed-looking exchanges:

CT7AUT · Portugal ×3 F1PBZ · France ×3 9A5E · Croatia ×3 CT7BRV · Portugal ×2 EA2DYB · Spain ×2 F4DIA · France ×2 F4EGM · France ×2 F5OAM · France ×2 G8KHF · England ×2 I4BUQ · Italy ×2 SP6FME · Poland ×2 TA3NK · Asiatic Turkey ×2

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 WZ4K

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: FM17 · 114 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,470 km (approx.)
Last such locator decoded: 2026-10-31 05:06 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	WZ4K S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-02 04:52	40m	- / -12	SV1DKR	-14 / -	4	✓ Closing fragment
10-31 05:02	80m	- / -20	YO8RAW	-1 / -	3	Partial capture
10-31 05:00	80m	- / -	I2SVA	+2 / -	4	Partial capture
10-31 04:59	80m	-12 / -	W2CG	- / -1	2	✓ Closing fragment
10-31 04:54	80m	-17 / -	AI5WW	- / -13	2	Partial capture
10-31 04:52	80m	-15 / -	K7CS	- / -4	3	✓ Closing fragment
10-31 04:49	80m	- / -	LZ2VQ	+4 / -	2	Partial capture
10-31 04:49	80m	- / -17	YO8RAW	+8 / -	5	Partial capture
10-31 04:47	80m	-14 / -7	CT7AUT	-7 / -13	6	✓ Full exchange observed
10-31 04:42	80m	-15 / -10	DD7EE	+5 / -17	15	Partial capture
10-31 03:38	80m	- / -	DO1OAS	+2 / -	3	Partial capture
10-31 03:37	80m	- / -	OK1WE	+2 / -	3	Partial capture
10-31 03:31	80m	- / -	DH0BRO	+13 / -	5	Partial capture
10-31 03:26	80m	- / -13	ON8WR	+4 / -	4	✓ Closing fragment
10-31 03:22	80m	- / -	DH0BRO	+11 / -	2	Partial capture
10-29 04:14	40m	- / -	CT2HEX	-12 / -	4	Partial capture
10-29 04:06	40m	- / -10	EA1CUB	-12 / -	3	✓ Closing fragment
10-29 04:01	40m	- / -5	CT7BRV	-16 / -	2	✓ Closing fragment
10-29 03:48	80m	- / -11	9A5E	-1 / -	4	✓ Closing fragment
10-29 03:39	80m	-20 / -	F4CTJ	- / -15	2	Partial capture
10-29 03:37	80m	-15 / -	KD3BLX	- / -9	4	✓ Closing fragment
10-29 03:25	80m	- / -	ON8WR	+7 / -	3	Partial capture
10-29 03:23	80m	- / -	NM1G	-10 / -	2	✓ Closing fragment
10-29 03:19	80m	- / -19	UT7EV	+2 / -	2	Partial capture
10-29 03:12	80m	-17 / -	K7TM	- / -9	3	✓ Closing fragment
10-29 03:03	80m	-19 / -	KC3MLR	- / -5	3	Partial capture
10-29 02:59	80m	-14 / -	K4OMP	- / +6	4	Partial capture
10-29 02:56	80m	-14 / -	PI4DX	+1 / -	2	✓ Closing observed
10-29 02:53	80m	- / -16	ON5HE	+3 / -	5	✓ Closing fragment
10-29 02:51	80m	-19 / -	KB2ELA	- / +8	2	Partial capture
10-28 03:36	80m	- / -	DO1OAS	+8 / -	3	Partial capture
10-28 03:29	80m	-8 / -	KD0XD	- / -13	2	✓ Closing fragment
10-28 02:50	40m	- / -23	G8KHF	+4 / -	2	✓ Closing fragment
10-28 02:48	40m	- / -4	SV1BLD	+11 / -	3	✓ Closing fragment
10-28 02:32	80m	- / -3	LZ1KU	+4 / -	2	Partial capture
10-28 02:22	80m	-18 / -	KE9AYZ	- / +9	3	Partial capture
10-28 02:17	80m	-15 / -	W1HS	- / -6	2	✓ Closing fragment
10-28 02:15	80m	-20 / -	HI4T	- / -8	2	Partial capture
10-28 02:12	80m	-17 / -	AB3HP	- / +3	3	✓ Closing fragment
10-28 02:09	80m	- / -6	ON1JP	-23 / -	2	Partial capture
10-28 02:07	80m	-19 / -18	9A5E	+6 / -	3	✓ Closing observed
10-28 02:00	80m	-20 / -	KM4GKD	- / -11	2	✓ Closing fragment
10-28 01:59	80m	-20 / -	WD8ANZ	- / -	3	✓ Closing fragment
10-28 01:58	80m	- / -	LZ2VQ	-6 / -	3	Partial capture
10-28 01:58	80m	-18 / -	N2FSM	- / -3	2	✓ Closing fragment
10-26 05:38	80m	- / -16	DO5HOK	-5 / -	5	Partial capture
10-26 05:38	80m	- / -	ON4MAP	-14 / -	6	Partial capture
10-26 05:34	80m	- / -15	ON1JP	-17 / -	2	Partial capture
10-26 05:29	80m	- / -16	GU4WRP	-15 / -	2	✓ Closing fragment
10-26 05:23	80m	- / -15	GW4HZA	+1 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
040145 -16 2056  WZ4K CT7BRV 73
040415  -1  840  WZ4K HB9PTF JN36
040615 -14 2275  WZ4K EA1CUB R-10 (x3)
041415 -19 1539  WZ4K CT2HEX IM58 (x4)
045215 -12 1836  WZ4K SV1DKR KM18 (x4)
050615  +6  482  WZ4K F5OEQ IN97
050645 -16 1561  WZ4K CT1BFP IM59

80m

UTC    dB Audio  Message
045900 -14  449  W2CG WZ4K -01 (x2)
050000 -18  450  CQ WZ4K FM17
050045  +2 2525  WZ4K I2SVA JN45 (x4)
050245  -1  912  WZ4K YO8RAW -20
050300 -17  449  CQ WZ4K FM17
050315  -1  912  WZ4K YO8RAW -21 (x2)
050400 -20  450  CQ WZ4K FM17 (x2)
050515  +2  459  WZ4K PE2JMR JO33
050600 -18  449  CQ WZ4K FM17

160m

UTC    dB Audio  Message
004530 -14  227  WZ4K 4L7T LN21 (x3)

20m

UTC    dB Audio  Message
205645 -18 1431  WZ4K IZ0GRR JN61 (x2)
210345  +2 2888  WZ4K EA7LGM IM67 (x2)
044915 -24 1962  WZ4K IZ8VYU R+00 (x2)

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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