IZ3XEF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN55

Receiver-side FT8 activity involving IZ3XEF, decoded by SO8OO in southeastern Poland. 107 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-20.

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 107 FT8 messages attributed to IZ3XEF as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 10 m (31%) and 80 m (10%). Several six-hour UTC windows tied for the largest share (50%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (92%); the estimated median was +1 dB.

Overview

107

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

80m · 11 40m · 63 10m · 33

First attributed message: 2026-06-08
Last attributed message: 2026-09-20 05:49 UTC

Observed FT8 message patterns

Attributed sample: 107 messages
Active dates: 15 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -8 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 98.

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 IZ3XEF in decoded directed-looking exchanges:

DL9KM · Fed. Rep. of Germany ×2 CN8NS · Morocco D2ACE · Angola DJ0MAB · Fed. Rep. of Germany EA1HWP · Spain HB9DWR · Switzerland HK3YL · Colombia K4YJ · United States OD5ZZ · Lebanon ON3PDM · Belgium PC2J · Netherlands PD1HPB · Netherlands

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 IZ3XEF

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: JN55 · 17 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 945 km (approx.)
Last such locator decoded: 2026-09-20 05:44 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	IZ3XEF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 05:48	40m	-1 / -	XE2V	- / -17	2	✓ Closing fragment
09-20 05:47	40m	-4 / +9	ON3PDM	-5 / -11	4	✓ Full exchange observed
09-20 05:45	40m	-1 / +7	PD1HPB	-3 / -4	5	✓ Full exchange observed
09-20 05:45	40m	0 / -	HB9DWR	- / -10	2	✓ Closing fragment
09-20 05:43	40m	0 / -	K4YJ	- / -9	2	✓ Closing fragment
09-20 05:42	40m	+4 / -1	DL9KM	-3 / -2	5	✓ Full exchange observed
09-20 05:41	40m	+2 / -	PY2DPM	- / -11	2	✓ Closing fragment
09-20 05:40	40m	-4 / -	HK3YL	- / -18	2	✓ Closing fragment
09-19 21:45	40m	0 / -	EA1HWP	- / -14	2	✓ Closing fragment
09-19 21:45	40m	+4 / -6	SV1EKI	-3 / -14	8	✓ Full exchange observed
09-19 21:41	40m	-1 / -	JA4MMO	- / -18	3	Partial capture
09-18 18:13	40m	+5 / -	ZL1RPC/P	- / -15	4	Partial capture
09-17 22:06	80m	+8 / -	DL9KM	-4 / +4	4	✓ Closing observed
09-17 22:05	80m	+5 / +2	9A4ZM	+16 / +4	5	✓ Full exchange observed
09-17 22:04	80m	+6 / -	DO8JB	-14 / -9	4	✓ Closing observed
09-17 22:02	80m	+5 / +4	DL3MIB	+14 / +5	7	✓ Full exchange observed
09-17 22:02	80m	+9 / -5	F1IQH	-12 / -	3	✓ Closing observed
09-16 22:11	80m	-12 / -1	5B4AMM	+1 / -10	4	✓ Full exchange observed
09-14 05:53	40m	-3 / -	MI0NWA	- / -9	2	Partial capture
09-14 05:52	40m	-6 / -	HK3AB	- / -15	3	Partial capture
09-13 22:23	40m	-7 / -	D2ACE	- / -11	4	✓ Closing fragment
09-13 22:21	40m	-2 / -	SP9DPI	- / -22	2	✓ Closing fragment
09-13 22:16	40m	-2 / -	R5AV	-16 / -	2	✓ Closing observed
09-13 22:15	40m	-4 / 0	PC2J	-6 / -8	4	✓ Full exchange observed
09-12 19:11	40m	- / -7	CN8NS	-12 / -	2	✓ Closing fragment
09-02 22:20	40m	-8 / +8	DJ0MAB	-13 / -	4	✓ Closing observed
09-02 22:17	40m	+1 / -	LU8GCJ	- / -19	2	Partial capture
09-02 22:16	40m	+1 / -	LU5FCI	- / -11	2	Partial capture
09-02 22:14	40m	+4 / -	RI1FJL	- / -16	2	Partial capture
08-28 08:46	10m	-9 / -	VK6IR	- / -	3	Partial capture
08-24 18:19	40m	0 / -	VJ6X	-9 / -18	3	✓ Closing observed
08-24 18:17	40m	+1 / -	D2ACE	- / -13	4	Partial capture
08-21 13:07	10m	- / -	PE9JAN	-12 / -	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
054500 +20 2694  IZ3XEF SP6CVB JO80
054515  +4 2693  HB9DWR IZ3XEF -10
054530  +1 2693  IZ3XEF PD1HPB JO22
054530  -3 1641  IZ3XEF ON3PDM JN29
054545  -3 2693  HB9DWR IZ3XEF RR73
054600  -3 2693  IZ3XEF PD1HPB JO22
054615  -1 2693  PD1HPB IZ3XEF -04
054630  -6 2693  IZ3XEF PD1HPB R+07 (x2)
054745  -6 2693  ON3PDM IZ3XEF -11
054845  -2 2693  XE2V IZ3XEF -17
054900  -4 1642  IZ3XEF ON3PDM R+09
054915  +0 2693  XE2V IZ3XEF RR73
054930  -6 1642  IZ3XEF ON3PDM R+18
054945  -2 2693  ON3PDM IZ3XEF RR73

80m

UTC    dB Audio  Message
220415  +5  354  DL3MIB IZ3XEF RR73
220430 -10 1503  IZ3XEF DO8JB JO32
220430 +14  794  IZ3XEF DL3MIB 73
220445  +3  354  DO8JB IZ3XEF -09 (x2)
220530 -17 1503  IZ3XEF DO8JB 73
220530 +13  350  IZ3XEF 9A4ZM JN86
220545  +7  354  9A4ZM IZ3XEF +04
220600  -3 1883  IZ3XEF DL9KM JN68
220600 +18  349  IZ3XEF 9A4ZM R+02
220615  +3  354  9A4ZM IZ3XEF RR73
220630  -5 1883  IZ3XEF DL9KM JN68
220630 +18  349  IZ3XEF 9A4ZM 73
220645 +11  354  DL9KM IZ3XEF +04 (x2)

10m

UTC    dB Audio  Message
130730 -15 1784  IZ3XEF PE9JAN JO22 (x3)
084630  +9  377  VK6IR IZ3XEF JN55 (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.

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