IU2NUB — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving IU2NUB, decoded by SO8OO in southeastern Poland. 24 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-27.

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 24 FT8 messages attributed to IU2NUB 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 (58%), followed by 20 m (42%). Several six-hour UTC windows tied for the largest share (63%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 14 20m · 10

First attributed message: 2026-06-08
Last attributed message: 2026-08-27 18:00 UTC

Observed FT8 message patterns

Attributed sample: 24 messages
Active dates: 5 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -12 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 11.

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 IU2NUB in decoded directed-looking exchanges:

CR5VP · Portugal DJ0MAB · Fed. Rep. of Germany F1ODM · France F1TXI · France IQ4JO · Italy M7CYY · England PH3T · Netherlands F6FHZ · France S54ZGA · Slovenia

Most frequent locator attributed to IU2NUB

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 · 18 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 945 km (approx.)
Last such locator decoded: 2026-08-27 18:00 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	IU2NUB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-28 13:10	20m	- / -17	PH3T	+9 / -	2	✓ Closing fragment
08-26 16:48	40m	-9 / -	Z34K	- / -	2	Partial capture
08-26 16:45	40m	-4 / -	F6FHZ	- / -12	2	✓ Closing fragment
08-26 16:45	40m	-8 / +3	S54ZGA	-2 / -9	6	✓ Full exchange observed
08-26 16:42	40m	-9 / -	RA8AF	- / -	3	Partial capture
08-25 12:58	20m	- / -12	M7CYY	-20 / -	2	✓ Closing fragment
08-25 07:14	20m	- / -4	IQ4JO	+5 / -	3	✓ Closing fragment
08-21 07:09	40m	- / -5	OE5PEN	-4 / -	3	Partial capture
08-18 12:03	20m	- / -20	F1TXI	-18 / -	3	✓ Closing fragment
08-17 09:56	20m	- / -	F1PSX	-8 / -	2	Partial capture
08-11 13:36	10m	- / -23	E75W	-14 / -	2	Partial capture
07-22 06:48	20m	- / -11	F1ODM	+10 / -	2	✓ Closing fragment
07-18 06:44	20m	-12 / -	T77BL	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
095730  -1 2239  IU2NUB PD1GOL JO21
100330  -1  479  IU2NUB GJ0KYZ -04
120315 -19 1673  IU2NUB F1TXI IN96 (x3)
083630  +2 2274  IU2NUB HB9ACA -02
083830 -13  955  IU2NUB DJ0MAB 73
085000  -3 2164  IU2NUB PD3PAM JO32
071430  -2 2331  IU2NUB IQ4JO JN63 (x3)
125815 -21 1804  IU2NUB M7CYY R-12 (x2)
131045  +8  811  IU2NUB PH3T -17 (x2)

40m

UTC    dB Audio  Message
164330  -9  355  CQ IU2NUB JN55                        a1 (x2)
164515  -2  355  IU2NUB S54ZGA +03
164530  -1  355  F6FHZ IU2NUB -12
164545  +0  355  IU2NUB S54ZGA +03
164600  -6  355  F6FHZ IU2NUB RR73
164615  -5  355  IU2NUB S54ZGA +03
164630  -7  355  S54ZGA IU2NUB R-09
164645  -3  355  IU2NUB S54ZGA RR73
164700 -10  355  S54ZGA IU2NUB 73
164830 -11  355  Z34K IU2NUB JN55 (x2)
165130  -6  355  CQ IU2NUB JN55
175515 -11  425  UX7UU IU2NUB JN55
180030  -3  425  UK8OM IU2NUB JN55

10m

UTC    dB Audio  Message
133645 -15 2397  IU2NUB E75W -23 (x2)
125845 -13 2031  IU2NUB IK2YYC JN55

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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