4Z5PT — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving 4Z5PT, decoded by SO8OO in southeastern Poland. 1,414 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-01.

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 1,414 FT8 messages attributed to 4Z5PT as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (81%), followed by 40 m (14%) and 10 m (5%). Most decodes (62%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

1,414

Messages attributed

UTC dates decoded

130

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 6 40m · 194 20m · 1,149 10m · 65

First attributed message: 2026-06-10
Last attributed message: 2026-09-01 03:50 UTC

Observed FT8 message patterns

Attributed sample: 1,414 messages
Active dates: 29 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -15 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 118, moderate (-15 to -9 dB) 456, strong (≥ -8 dB) 840.

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 4Z5PT in decoded directed-looking exchanges:

TA3XEE · Asiatic Turkey ×3 PA3EMR · Netherlands ×2 SV1MOZ · Greece ×2 CT1BFP · Portugal ×2 BG6OQI · China ×2 IW5ALZ · Italy ×2 DL1SBE · Fed. Rep. of Germany ×2 UR5WCS · Ukraine ×2 F4MWC · France ×2 SV5ADM · Dodecanese ×2 TA3NK · Asiatic Turkey ×2 EA1JBS · Spain ×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 4Z5PT

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 · 762 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,224 km (approx.)
Last such locator decoded: 2026-09-01 03:48 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	4Z5PT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-01 04:03	40m	- / -	PD8HUB	-3 / -	10	Partial capture
09-01 03:56	40m	- / -	PD8HUB	-11 / -	2	Partial capture
09-01 03:51	40m	- / -	PD8HUB	-12 / -	2	Partial capture
09-01 03:48	40m	- / -18	F1PBZ	-3 / -	3	Partial capture
09-01 03:46	40m	- / -	F1IQH	-6 / -	3	Partial capture
09-01 03:45	40m	-16 / -14	PD8HUB	-10 / -15	7	✓ Full exchange observed
09-01 03:45	40m	- / -	F4CVT	-10 / -	2	Partial capture
09-01 03:32	40m	-14 / -	TC30AGU	- / -16	3	Partial capture
09-01 03:29	40m	-14 / -	W0ZB	- / -	4	Partial capture
09-01 03:27	40m	-12 / -	KO3ZDE	- / -	2	Partial capture
08-31 05:08	20m	-4 / -	SV1CEI	- / -2	2	✓ Closing fragment
08-31 05:05	20m	-2 / -	CO8LY	- / -11	6	✓ Closing fragment
08-31 05:00	20m	-7 / -	8S2C	- / -10	7	✓ Closing fragment
08-29 14:21	20m	-12 / -	IZ0AIO	- / -19	2	✓ Closing fragment
08-29 14:19	20m	-5 / -20	F4MWC	+6 / -15	5	✓ Full exchange observed
08-29 14:13	20m	-4 / -	DB1EF	- / -16	2	✓ Closing fragment
08-29 14:12	20m	-7 / -4	RA9CUA	-13 / -3	4	✓ Full exchange observed
08-29 14:10	20m	-2 / -	E70SZ	- / -11	2	✓ Closing fragment
08-29 08:09	20m	-13 / -	RA9YTI	- / -	3	Partial capture
08-29 08:02	20m	-14 / -	RA9YTI	- / -	4	Partial capture
08-29 04:32	20m	-15 / -20	<...>	-20 / -	4	✓ Closing fragment
08-29 04:27	20m	-13 / -	<...>	- / -15	2	Partial capture
08-29 04:24	20m	-12 / -	HA5LB	- / -8	3	✓ Closing fragment
08-29 04:22	20m	-6 / -	VJ2Q	- / -	4	Partial capture
08-29 04:20	20m	-2 / -	OK1WE	- / -13	2	✓ Closing fragment
08-29 04:07	20m	+3 / -	ZP5DBC	-7 / -15	25	✓ Closing observed
08-29 04:02	20m	+3 / -12	<...>	-7 / -6	9	Partial capture
08-28 21:59	20m	0 / -	IU1VFY	-15 / -5	3	✓ Closing observed
08-28 21:55	20m	+3 / -11	KB1FJC	-11 / -11	5	✓ Full exchange observed
08-28 21:48	40m	-6 / -	HL2ADO	- / -	2	Partial capture
08-28 21:44	40m	-6 / -	VK6BAD	- / -2	3	✓ Closing fragment
08-28 21:38	20m	+4 / -	JI1NJC	- / -20	2	Partial capture
08-28 21:33	20m	+4 / -20	LZ2EW	-8 / -12	10	✓ Full exchange observed
08-28 21:31	20m	+4 / -	N1DQD	- / -17	6	✓ Closing fragment
08-28 21:28	20m	- / -	LZ2EW	-6 / -	2	Partial capture
08-28 21:28	20m	+11 / -	K1VVM	- / -19	3	✓ Closing fragment
08-28 21:25	20m	+10 / -17	K1IM	-18 / -16	6	✓ Full exchange observed
08-28 21:23	20m	+8 / -14	IZ1MIG	-18 / -11	8	✓ Full exchange observed
08-28 21:23	20m	- / -	LZ2EW	-4 / -	4	Partial capture
08-28 21:22	20m	+5 / -18	KC8KCM	-10 / -	2	✓ Closing observed
08-28 21:18	20m	+4 / -	SQ2JG	- / -6	2	✓ Closing fragment
08-28 21:14	20m	+1 / -10	KB3Z	-7 / -7	5	✓ Full exchange observed
08-28 21:13	20m	0 / -	JA8NZB	- / -4	2	✓ Closing fragment
08-28 21:12	20m	-6 / -	SP9AUV	- / -2	2	✓ Closing fragment
08-28 21:10	20m	-6 / -	EA1JBS	- / -1	2	✓ Closing fragment
08-28 21:08	20m	-2 / -	DL7DO	- / -16	3	✓ Closing fragment
08-28 21:07	20m	0 / -	F4MBU	- / -13	2	✓ Closing fragment
08-28 21:06	20m	- / -	DH1HF	-16 / -	5	Partial capture
08-28 21:05	20m	- / -	IW5ALZ	+2 / -	5	Partial capture
08-28 21:04	20m	-1 / -	JH4BYZ	- / -10	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
035000 -15  987  HA1TAB 4Z5PT -18
035115 -13 1537  4Z5PT PD8HUB JO21 (x14)

20m

UTC    dB Audio  Message
050115 -11 1025  8S2C 4Z5PT R-10 (x6)
050500  -3 1025  CO8LY 4Z5PT KM72 (x6)
050800  -4 1024  SV1CEI 4Z5PT -02 (x2)
051115  -5 1024  LY5A 4Z5PT KM72

10m

UTC    dB Audio  Message
081615 -15 1805  4Z5PT F6EKI 73
082115 -16 1033  4Z5PT IZ7QFP 73
084745  -6  440  4Z5PT I8OHQ RR73
070215 -15 1176  4Z5PT SV5ADM R-05 (x2)
071045 -16 1033  4Z5PT RD6OW 73
075730 -16 1030  4Z5PT SV1MOZ KM17 (x2)
102845  -8 2539  4Z5PT F1PBZ -10
090200 -15 1035  4Z5PT SV1MOZ KM17 (x2)
165915  -4 1033  4Z5PT OZ0A JO55 (x4)

80m

UTC    dB Audio  Message
010430  +7 1973  4Z5PT Z62NS -14
010445 -16  952  Z62NS 4Z5PT R-20 (x2)
010530  +2 2102  4Z5PT DO9BAU JO62 (x3)
010645  -9  952  Z62NS 4Z5PT KM72
010700  +5 2102  4Z5PT DO9BAU JO62
010700 +10 1659  4Z5PT LZ370TL -08
010715  -8  952  <...> 4Z5PT R-09
010730  +5 2102  4Z5PT DO9BAU JO62
010800 -13  953  4Z5PT F4FPR IN88 (x4)

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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