4X4ZP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Israel Most frequent locator attributed to this token: KM72

Receiver-side FT8 activity involving 4X4ZP, decoded by SO8OO in southeastern Poland. 347 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-18 and 2026-08-23.

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 347 FT8 messages attributed to 4X4ZP as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (99%), followed by 20 m (1%). Most decodes (56%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (74%); the estimated median was -12 dB.

Overview

347

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 344 20m · 3

First attributed message: 2026-08-18
Last attributed message: 2026-08-23 15:57 UTC

Observed FT8 message patterns

Attributed sample: 347 messages
Active dates: 5 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -16 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 256, strong (≥ -8 dB) 53.

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 4X4ZP in decoded directed-looking exchanges:

G5LSB · England G3YQA · England RV6F · European Russia WB2REM · United States TA3NK · Asiatic Turkey SV2AEL · Greece IU8PML · Italy 9A2RI · Croatia

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 4X4ZP

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: KM72 · 343 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,224 km (approx.)
Last such locator decoded: 2026-08-23 15:57 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	4X4ZP S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 15:53	40m	- / -	HA1RJ	+14 / -	4	Partial capture
08-23 15:49	40m	- / -	HA1DSL	-10 / -	2	Partial capture
08-23 15:22	40m	- / -	SQ9EJ	-10 / -	13	Partial capture
08-23 15:01	40m	- / -22	RA3AJT	-4 / -	2	Partial capture
08-23 14:44	40m	- / -13	YO5OSF	+6 / -	2	Partial capture
08-23 14:21	40m	- / -22	HA7CH	0 / -	2	Partial capture
08-23 14:05	40m	- / -17	HA7CH	0 / -	2	Partial capture
08-23 04:18	40m	- / -15	MM0KQC	-23 / -	2	Partial capture
08-23 04:14	40m	- / -	SV8GXC	-15 / -	6	Partial capture
08-23 04:04	40m	- / -	SV8GXC	-16 / -	5	Partial capture
08-23 04:04	40m	- / -	EW3DK	-15 / -	5	Partial capture
08-23 04:03	40m	- / -	UW5ESX	-9 / -	11	Partial capture
08-23 03:54	40m	- / -	SV8GXC	-16 / -	6	Partial capture
08-23 03:38	40m	- / -	SV8GXC	-15 / -	5	Partial capture
08-23 03:27	40m	- / -9	EA4HEW	-15 / -	2	Partial capture
08-23 03:20	40m	- / -	DL3HN	-12 / -	11	Partial capture
08-23 03:20	40m	- / -	SV8GXC	-12 / -	12	Partial capture
08-23 03:16	40m	- / -	DL3HN	-13 / -	2	Partial capture
08-23 03:08	40m	- / -	SV8GXC	-7 / -	5	Partial capture
08-23 03:04	40m	- / -13	MM0KQC	-17 / -	3	Partial capture
08-23 02:57	40m	- / -	SV8GXC	-7 / -	9	Partial capture
08-23 02:54	40m	- / -18	MM0KQC	-11 / -	3	Partial capture
08-23 02:44	40m	- / -	SV8GXC	-12 / -	10	Partial capture
08-23 02:37	40m	- / -	F1PBZ	+2 / -	2	Partial capture
08-23 02:28	40m	- / -15	MM0KQC	-20 / -	2	Partial capture
08-23 02:26	40m	- / -	SV8GXC	-10 / -	6	Partial capture
08-23 02:11	40m	- / -	DG5PW	-9 / -	4	Partial capture
08-23 02:09	40m	- / -	SV8GXC	-15 / -	6	Partial capture
08-23 01:53	40m	- / -	SV8GXC	-14 / -	2	Partial capture
08-23 01:40	40m	- / -	SV8GXC	-14 / -	14	Partial capture
08-23 01:34	40m	- / -	SV8GXC	-14 / -	4	Partial capture
08-23 01:23	40m	- / -	SV8GXC	-11 / -	9	Partial capture
08-23 01:11	40m	- / -15	MM0KQC	-11 / -	2	Partial capture
08-23 01:09	40m	- / -	SV8GXC	-12 / -	14	Partial capture
08-23 00:53	40m	- / -	SV8GXC	-14 / -	10	Partial capture
08-23 00:35	40m	- / -	PE8HB	-14 / -	2	Partial capture
08-23 00:28	40m	- / -1	MM0KQC	-4 / -	3	Partial capture
08-23 00:24	40m	- / -	SV8GXC	-10 / -	21	Partial capture
08-23 00:22	40m	- / -15	MM0KQC	-13 / -	4	Partial capture
08-23 00:16	40m	- / -	RX3DQL	-8 / -	6	Partial capture
08-23 00:13	40m	- / -14	MM0KQC	-12 / -	3	Partial capture
08-23 00:08	40m	- / -13	M9KER	-15 / -	2	Partial capture
08-23 00:02	40m	- / -11	MM0KQC	-11 / -	3	Partial capture
08-22 23:57	40m	- / -	SV8GXC	-9 / -	20	Partial capture
08-22 23:35	40m	- / -17	MM0KQC	-14 / -	4	Partial capture
08-22 23:35	40m	- / -	SV8GXC	-12 / -	27	Partial capture
08-22 23:32	40m	- / -12	SP6SR	+1 / -	9	Partial capture
08-22 23:28	40m	- / -	SV8GXC	-15 / -	7	Partial capture
08-22 23:26	40m	- / -9	EI4JFB	+2 / -	5	Partial capture
08-22 23:21	40m	- / -	SV8GXC	-15 / -	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
152730  -9 1689  4X4ZP SQ9EJ JN99 (x2)
153715 -19  887  CQ 4X4ZP KM72 (x5)
154900  -9  885  4X4ZP HA1DSL JN86 (x2)
155330  +9  585  4X4ZP HA1RJ JN87 (x4)
155700  -9 1032  4X4ZP UB6ZDJ KN98
155745 -14  886  CQ 4X4ZP KM72

10m

UTC    dB Audio  Message
101200 -17 2215  4X4ZP SV2AEL 73
134930 -10 2417  4X4ZP F4CUO JN03 (x2)
135900  -7  298  4X4ZP F4BYF IN97 (x3)

20m

UTC    dB Audio  Message
075800 -12 1576  4X4ZP DJ4QV JO50 (x2)
083030 -15 1365  4X4ZP PD4RJ JO33 (x3)
084230 -14 1580  4X4ZP PD9FLX JO22 (x4)
084500  -9 1575  4X4ZP IU6KQP JN63
084530  -9 1581  4X4ZP PD9FLX R-24 (x3)
085000  +1 1178  4X4ZP M7JVH IO83 (x2)

80m

UTC    dB Audio  Message
030500 -20  577  4X4ZP F5LMJ JN28 (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.

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