IZ4FUA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN45

Receiver-side FT8 activity involving IZ4FUA, decoded by SO8OO in southeastern Poland. 219 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-17.

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 219 FT8 messages attributed to IZ4FUA as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (46%), followed by 10 m (34%) and 80 m (15%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (78%); the estimated median was -1.1 dB.

Overview

219

Messages attributed

UTC dates decoded

Active 15-min windows

-1.1 dB

Estimated median S/N

Bands

80m · 32 60m · 9 40m · 100 20m · 4 10m · 74

First attributed message: 2026-06-10
Last attributed message: 2026-09-17 20:37 UTC

Observed FT8 message patterns

Attributed sample: 219 messages
Active dates: 19 UTC dates
Estimated median S/N: -1.1 dB
Estimated 10th-90th percentile: -16 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 171.

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 IZ4FUA in decoded directed-looking exchanges:

CA1LRM · Chile ×2 CE3PA · Chile EX8ABR · Kyrgyzstan HI3RRR · Dominican Republic K4EM · United States KB8SRX · United States LU9OMN · Argentina LW8ETV · Argentina PU3VON · Brazil PU5BHV · Brazil TA2R · Asiatic Turkey TI2JV · Costa Rica

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 IZ4FUA

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: JN45 · 118 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,075 km (approx.)
Last such locator decoded: 2026-09-17 20:36 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	IZ4FUA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 20:44	80m	- / +10	II9IAGM	-2 / -	2	Partial capture
09-17 20:36	80m	-2 / -3	3Z100PKP	+14 / -11	4	Partial capture
09-17 20:27	60m	+6 / +10	II8IHBC	-20 / +4	3	Partial capture
09-17 20:21	60m	+12 / -	II0IHMG	- / -5	2	Partial capture
09-14 18:45	40m	+6 / -13	II4IANT	-10 / -4	2	Partial capture
09-11 19:53	40m	- / -	DK5EO	-12 / -	2	Partial capture
09-11 19:53	40m	-2 / -14	DK8HC	0 / -9	9	✓ Full exchange observed
09-11 19:51	40m	+1 / -	II7IAME	- / +4	3	Partial capture
09-04 20:29	40m	-2 / -	RI1FJL	- / -7	7	Partial capture
08-11 20:06	20m	+9 / -	EN35UKR	- / +4	4	Partial capture
07-15 18:31	10m	-6 / -	UX2SB	- / -	2	✓ Closing fragment
07-15 18:30	10m	-12 / -	TA2R	- / +8	2	✓ Closing fragment
07-15 18:29	10m	-1 / -	UX3HX	- / +3	2	✓ Closing fragment
07-15 18:27	10m	-14 / -	EX8ABR	- / -	2	✓ Closing fragment
07-02 20:17	10m	-10 / -	T42FCR	- / -	3	Partial capture
07-02 20:15	10m	-15 / -	LW8ETV	- / -10	3	✓ Closing fragment
07-02 20:11	10m	+1 / -	LU9OMN	- / -18	3	✓ Closing fragment
07-02 20:02	10m	-13 / -	CE3PA	- / -14	3	✓ Closing fragment
07-02 19:48	10m	-22 / -	WP4TZU	- / -	2	✓ Closing fragment
06-30 19:50	10m	-14 / -	N9W	- / -5	2	Partial capture
06-29 20:43	10m	-16 / -	KB8SRX	- / -13	3	✓ Closing fragment
06-24 20:53	10m	-5 / -	PU5BHV	- / -6	2	✓ Closing fragment
06-24 20:44	10m	-17 / -	PY1GB	- / -	3	Partial capture
06-24 20:39	10m	-3 / -	PU3VON	- / -9	3	✓ Closing fragment
06-24 20:35	10m	-1 / -	CA1LRM	- / -2	3	✓ Closing fragment
06-24 20:30	10m	-2 / -	HI3RRR	- / -3	3	✓ Closing fragment
06-24 19:39	10m	+4 / -	K4EM	- / -11	3	✓ Closing fragment
06-24 18:29	10m	-5 / -	3G0YM	- / -	22	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
203645  +0 1029  3Z100PKP IZ4FUA JN45
203700 +14 1028  IZ4FUA 3Z100PKP -03
203715  -1 1029  3Z100PKP IZ4FUA R-11 (x2)
204430  -9 1707  IZ4FUA II9IAGM +08 (x2)

60m

UTC    dB Audio  Message
202145 +13  873  II0IHMG IZ4FUA JN45 (x2)
202715  +6 1279  II8IHBC IZ4FUA JN45
202730 -20 1280  IZ4FUA II8IHBC +10
202745  +7 1279  II8IHBC IZ4FUA R+04

40m

UTC    dB Audio  Message
195300  +5  599  IZ4FUA DK8HC JO42
195300 -13 1799  IZ4FUA DK5EO JO31
195330  -4  599  IZ4FUA DK8HC JO42
195330 -12 1799  IZ4FUA DK5EO JO31
195400  -1  598  IZ4FUA DK8HC JO42
195415  -2 1800  DK8HC IZ4FUA -09
195430  -4  599  IZ4FUA DK8HC JO42
195445  -5 1800  DK8HC IZ4FUA -12
195500  -1  599  IZ4FUA DK8HC R-14
195515  +2 1800  DK8HC IZ4FUA RR73
195530  +4  599  IZ4FUA DK8HC 73
195615  -1 1764  DK5EO IZ4FUA -15
183945  -3 1577  II4IANT IZ4FUA JN45
184530 -10 1578  IZ4FUA II4IANT -13
184545  +6 1577  II4IANT IZ4FUA R-04

20m

UTC    dB Audio  Message
200645  +8 1060  <EN35UKR> IZ4FUA JN45 (x4)

10m

UTC    dB Audio  Message
201615 -15 1455  LW8ETV IZ4FUA 73
201745 -10 2202  T42FCR IZ4FUA JN45 (x3)
202045 -13 2201  PU2XEE IZ4FUA R-13
192415  -9 1937  HI6M IZ4FUA JN45
192545 -16 2179  CQ IZ4FUA JN45                        a1
182745  -5 1880  EX8ABR IZ4FUA R+12 (x2)
182915  -1 1327  UX3HX IZ4FUA +03 (x2)
183045 -16 1326  TA2R IZ4FUA +08 (x2)
183145  -3 1327  UX2SB IZ4FUA +19 (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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