IU4UUK — 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: JN64

Receiver-side FT8 activity involving IU4UUK, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-07.

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 34 FT8 messages attributed to IU4UUK 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 (50%), followed by 20 m (50%). Several six-hour UTC windows tied for the largest share (53%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

34
Messages attributed
5
UTC dates decoded
11
Active 15-min windows
-11 dB
Estimated median S/N

Bands

40m · 17 20m · 17
First attributed message: 2026-06-09
Last attributed message: 2026-10-07 15:16 UTC

Observed FT8 message patterns

Attributed sample
34 messages
Active dates
5 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-19 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 16, 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 IU4UUK in decoded directed-looking exchanges:

Most frequent locator attributed to IU4UUK

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
JN64 · 15 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
897 km (approx.)
Last such locator decoded
2026-10-07 15:14 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 UTCBandIU4UUK S/NCounterpartCounterpart S/NMsgsCapture
10-07 15:14 40m -6 / - IN3OWY - / +3 4 ✓ Closing fragment
09-19 12:39 40m -10 / - IR4DCI -5 / - 3 ✓ Closing observed
09-19 12:37 40m -20 / - IW2JIE - / 0 3 ✓ Closing fragment
09-19 12:16 40m -11 / - IR4DCI -6 / +6 3 ✓ Full exchange observed
09-16 14:45 40m -16 / - IN3IZQ - / - 2 Partial capture
09-16 14:44 40m -10 / - IW2MLJ - / - 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
123700 -19 2006  IW2JIE IU4UUK JN64 (x3)
123915 -10  639  IR4DCI IU4UUK JN64
123930  -3  580  IU4UUK IR4DCI +21 (x2)
124045 -14  835  DL5WP IU4UUK JN64
124145 -12  835  IU4PPL IU4UUK RR73
124300 -15 1694  IU4UUK II4IANT -03
221815  -1  290  RA0AF IU4UUK JN64
151400  -8  238  CQ IU4UUK JN64
151430  -3  238  IN3OWY IU4UUK +03 (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.

CW

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

Explore CW reception at SO8OO

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