IU4AOY — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN54

Receiver-side FT8 activity involving IU4AOY, decoded by SO8OO in southeastern Poland. 47 FT8 messages attributed to this token as transmitter, on 80m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-11-05.

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 47 FT8 messages attributed to IU4AOY as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (55%), followed by 10 m (45%). Most decodes (77%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 26 10m · 21

First attributed message: 2026-06-10
Last attributed message: 2026-11-05 20:54 UTC

Observed FT8 message patterns

Attributed sample: 47 messages
Active dates: 5 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -19 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 9.

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 IU4AOY in decoded directed-looking exchanges:

PZ5RA · Suriname JH4IFF · Japan

Most frequent locator attributed to IU4AOY

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: JN54 · 33 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-11-05 20:54 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	IU4AOY S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 20:38	80m	-8 / -	EA1IOK	-12 / -	3	Partial capture
11-05 20:37	80m	- / -1	YO4NF	+5 / -	2	Partial capture
11-05 20:33	80m	-9 / -	JH4IFF	- / -16	8	✓ Closing fragment
11-05 20:21	80m	-15 / -	JA6LCJ	- / -	8	Partial capture
10-18 20:41	80m	-15 / -	JJ3JHP	- / -	5	Partial capture
08-08 15:37	10m	-17 / -16	PZ5RA	-22 / +5	14	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
202430 -14 1505  JA6LCJ IU4AOY JN54
203300  -8 1505  JH4IFF IU4AOY R-16 (x8)
203745  +4 1506  IU4AOY YO4NF -01 (x2)
203815 -11  700  IU4AOY EA1IOK IN62 (x2)
204000  -8 1505  EA1IOK IU4AOY RRR
205430 -15 1506  JG3TRB IU4AOY JN54

10m

UTC    dB Audio  Message
153715 -18 2110  PZ5RA IU4AOY JN54 (x10)
154230 -22 1879  IU4AOY PZ5RA -16
154245 -17 2111  PZ5RA IU4AOY R+05 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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