IU4KVZ — 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 IU4KVZ, decoded by SO8OO in southeastern Poland. 55 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-21 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 55 FT8 messages attributed to IU4KVZ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (75%), followed by 80 m (13%) and 10 m (7%). Several six-hour UTC windows tied for the largest share (73%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was -1 dB.

Overview

55
Messages attributed
6
UTC dates decoded
8
Active 15-min windows
-1 dB
Estimated median S/N

Bands

80m · 7 60m · 3 40m · 41 10m · 4
First attributed message: 2026-06-21
Last attributed message: 2026-11-05 06:19 UTC

Observed FT8 message patterns

Attributed sample
55 messages
Active dates
6 UTC dates
Estimated median S/N
-1 dB
Estimated 10th-90th percentile
-11 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 44.

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 IU4KVZ in decoded directed-looking exchanges:

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 IU4KVZ

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 · 37 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
897 km (approx.)
Last such locator decoded
2026-11-05 06:19 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 UTCBandIU4KVZ S/NCounterpartCounterpart S/NMsgsCapture
11-05 06:16 40m -8 / - 6W/IK2HKT - / - 6 Partial capture
11-05 06:12 40m -10 / - SN0SOLARIS - / - 6 Partial capture
11-05 06:07 40m 0 / - 6W/IK2HKT - / -13 2 Partial capture
11-04 20:26 40m 0 / - HS0ZOY - / -13 5 ✓ Closing fragment
11-04 20:20 40m +3 / - UB3ZKO - / -11 4 ✓ Closing fragment
11-04 20:18 40m +4 / - HL1HG - / -11 3 ✓ Closing fragment
11-04 20:06 40m -6 / -10 4X1UF -12 / - 3 ✓ Closing observed
11-04 20:03 40m -9 / - YO1BRANCUSI - / -4 4 Partial capture
11-02 20:12 40m - / -3 SV5BYP -3 / - 3 ✓ Closing fragment
10-10 19:36 80m +1 / - 9H6C - / -17 7 ✓ Closing fragment
09-03 18:53 40m -8 / - RI1FJL - / -11 2 Partial capture
09-03 18:45 40m +6 / - RI1FJL - / - 7 Partial capture
08-20 19:45 60m -9 / +1 OJ0JR +3 / -8 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
060645  +3 2777  DL40EUDXF IU4KVZ JN64
060715  +1 2777  <6W/IK2HKT> IU4KVZ R-13 (x2)
061245 -11 1535  SN0SOLARIS IU4KVZ JN64 (x6)
061615  -8 2144  <6W/IK2HKT> IU4KVZ JN64 (x6)
80m 
UTC    dB Audio  Message
193645  +5 2037  9H6C IU4KVZ JN64 (x7)
60m 
UTC    dB Audio  Message
194515 -11 1579  OJ0JR IU4KVZ JN64
194530  +3  438  IU4KVZ OJ0JR +01
194545  -6 1579  OJ0JR IU4KVZ R-08
194600  +5  438  IU4KVZ RR73; DL1WU <...> -20
194615 -10 1579  OJ0JR IU4KVZ 73

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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