IU0SIB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN61

Receiver-side FT8 activity involving IU0SIB, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-07-04 and 2026-08-23.

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 23 FT8 messages attributed to IU0SIB as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (83%), followed by 10 m (17%). Several six-hour UTC windows tied for the largest share (74%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (83%); the estimated median was -19 dB.

Overview

23
Messages attributed
9
UTC dates decoded
12
Active 15-min windows
-19 dB
Estimated median S/N

Bands

20m · 19 10m · 4
First attributed message: 2026-07-04
Last attributed message: 2026-08-23 10:17 UTC

Observed FT8 message patterns

Attributed sample
23 messages
Active dates
9 UTC dates
Estimated median S/N
-19 dB
Estimated 10th-90th percentile
-24 to -14 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 0.

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 IU0SIB 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 IU0SIB

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
JN61 · 10 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,158 km (approx.)
Last such locator decoded
2026-08-23 10:17 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 UTCBandIU0SIB S/NCounterpartCounterpart S/NMsgsCapture
09-20 17:16 40m - / -11 II6IGTO -6 / - 2 Partial capture
09-18 06:48 40m - / -13 4O4DB -12 / - 3 Partial capture
09-14 06:15 60m - / -5 HB9ACA -22 / - 2 ✓ Closing fragment
09-08 07:39 40m - / -15 OE3KJO -10 / - 2 ✓ Closing fragment
09-06 17:03 40m - / -17 IZ2CDP -18 / - 3 ✓ Closing fragment
09-06 16:30 40m - / - IK2BUF -10 / - 2 ✓ Closing fragment
09-04 09:18 40m - / -13 IK2GAU -16 / - 2 ✓ Closing fragment
09-03 15:30 40m - / -16 IK2BUF -18 / - 2 Partial capture
09-02 13:59 40m - / -17 II7MGXX -16 / - 2 Partial capture
08-28 16:33 40m - / -1 II7MGXX -3 / - 2 Partial capture
08-28 16:27 40m - / -14 II7MGLE -13 / - 2 Partial capture
08-23 10:17 20m -19 / - PD1SCO - / - 2 Partial capture
08-20 08:57 10m - / - LZ4VR -20 / - 4 Partial capture
08-20 08:44 10m - / - SV1EKI -20 / - 5 Partial capture
08-20 06:49 20m -12 / - DL9YNG - / +8 2 Partial capture
08-20 06:46 20m -16 / - EA3NG - / - 2 Partial capture
08-20 05:43 40m - / - F1IQH -5 / - 3 Partial capture
08-09 07:36 40m - / - DA1ST -14 / - 3 Partial capture
08-07 12:22 20m - / 0 PD1ACB -24 / - 2 Partial capture
08-07 12:08 20m - / 0 PD1ACB -22 / - 2 Partial capture
08-07 11:41 20m - / 0 PD1ACB -18 / - 4 Partial capture
08-07 11:18 20m - / 0 PD1ACB -19 / - 4 Partial capture
08-04 06:13 40m - / - F5RRS -20 / - 3 Partial capture
08-03 09:53 20m - / -10 CR7BUJ -19 / - 2 ✓ Closing fragment
08-02 08:22 20m - / - DL1UDO -18 / - 2 ✓ Closing fragment
07-31 09:17 20m - / - PD1ADA -14 / - 2 Partial capture
07-31 08:50 20m - / -8 PA2PS -15 / - 2 ✓ Closing fragment
07-31 08:50 20m - / -16 PD3CFG -18 / - 3 Partial capture
07-27 17:42 40m - / -20 UX7QV -11 / - 8 ✓ Closing fragment
07-26 07:13 40m - / -18 YR50NADIA -20 / - 2 Partial capture
07-21 10:13 20m - / - TK5K 0 / - 2 ✓ Closing fragment
07-20 13:24 20m - / -6 G3EFG -14 / - 2 ✓ Closing fragment
07-19 06:47 20m - / -5 OK1DBE -5 / - 3 ✓ Closing fragment
07-16 08:05 20m - / - DL3MIB -8 / - 6 Partial capture
07-13 06:12 20m - / - RA6OY +3 / - 5 Partial capture
07-13 06:12 20m - / - EA1IOK -6 / - 2 Partial capture
07-13 06:10 20m - / - ON5HE -14 / - 2 Partial capture
07-10 09:03 40m - / -19 HA1ZW -22 / - 4 ✓ Closing fragment
07-09 15:43 40m - / - S51PV -17 / - 3 Partial capture
07-09 09:36 20m - / -2 EA8UP -16 / - 2 ✓ Closing fragment
07-05 17:18 20m -16 / - II1WWA - / - 3 Partial capture
07-05 16:22 40m - / -3 TM2WWA -8 / - 2 ✓ Closing fragment
07-05 13:46 20m - / +4 DA0WWA -21 / - 3 ✓ Closing fragment
07-05 08:23 20m - / -6 SN4WWA -19 / - 3 Partial capture
07-05 07:42 20m - / -13 OL6WWA +6 / - 4 Partial capture
07-05 07:26 20m - / -24 OL6WWA +10 / - 5 Partial capture
07-04 23:23 80m - / -17 SN4WWA +6 / - 3 ✓ Closing fragment
07-04 14:58 20m - / - PE1NPS -17 / - 3 Partial capture
07-04 14:54 20m -24 / -12 EG4WWA -24 / - 2 Partial capture
07-03 09:37 20m - / - PE1NPS -16 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
153000  -9 1810  IU0SIB II6IALU -03
150600 -17 1358  IU0SIB II8IHBC -08
061130 -18 1224  IU0SIB II9IAGM -05
154700  -5 2963  IU0SIB IR0IADU -24
162500  -9 1598  IU0SIB II0IHMG -06
121800 -21 1365  IU0SIB II7IABB +02
065130 -17 1216  IU0SIB II8IHBC -21
122615 -10 2342  IU0SIB S51PV R-11
060800 -17 1096  IU0SIB II9IAGM -16
063645  -7 2678  IU0SIB II6IALU -09
064800  -9 1308  IU0SIB 4O4DB JN92 (x3)
171630  -6 1769  IU0SIB II6IGTO -11 (x2)
60m 
UTC    dB Audio  Message
061500 -22 2040  IU0SIB HB9ACA -05 (x2)
20m 
UTC    dB Audio  Message
114200 -17 1566  IU0SIB PD1ACB +00 (x7)
063630 -12 2635  IU0SIB F1PBZ -09
064515 -21 1187  DK4FJ IU0SIB R-01
064645 -17 1452  EA3NG IU0SIB JN61 (x2)
064915 -10 1452  DL9YNG IU0SIB +08 (x2)
101715 -18 1727  PD1SCO IU0SIB JN61 (x2)
10m 
UTC    dB Audio  Message
094615 -23 1346  IU0SIB DG4SCG R+00
084415 -24 1779  IU0SIB SV1EKI KM18 (x2)
084500 -19 1210  G0IXE IU0SIB -17
084515 -14 1779  IU0SIB SV1EKI KM18 (x3)
085745 -13 1751  IU0SIB LZ4VR KN13 (x4)
092030 -19 1204  9A4ZM IU0SIB RR73
092315 -16 1204  DD3HB IU0SIB 73
092345 -21 1204  SQ7OFH IU0SIB JN61
80m 
UTC    dB Audio  Message
232300  +7 1543  IU0SIB SN4WWA -17 (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.

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