IU0SIB — 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: JN61

Receiver-side FT8 activity involving IU0SIB, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 80m, 60m, 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-07-04 and 2026-10-31.

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 30 FT8 messages attributed to IU0SIB as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (63%), followed by 60 m (17%) and 10 m (13%). Several six-hour UTC windows tied for the largest share (57%), 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 -20 dB.

Overview

30
Messages attributed
10
UTC dates decoded
14
Active 15-min windows
-20 dB
Estimated median S/N

Bands

80m · 2 60m · 5 20m · 19 10m · 4
First attributed message: 2026-07-04
Last attributed message: 2026-10-31 16:53 UTC

Observed FT8 message patterns

Attributed sample
30 messages
Active dates
10 UTC dates
Estimated median S/N
-20 dB
Estimated 10th-90th percentile
-24 to -14 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 5, 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 · 16 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,158 km (approx.)
Last such locator decoded
2026-10-31 16:51 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
11-05 07:42 40m - / -22 PD40EUDXF -4 / - 2 Partial capture
11-05 07:35 40m - / -15 DH5BM -2 / - 3 ✓ Closing fragment
11-05 07:12 40m - / -11 HA7TM +9 / - 2 Partial capture
10-31 16:51 60m -21 / -6 DJ1NE -8 / -15 5 ✓ Full exchange observed
10-31 16:49 60m -22 / -14 HA0NDN -9 / - 4 Partial capture
10-31 16:45 80m - / - DO2XB +5 / - 2 Partial capture
10-31 16:44 80m - / -22 IZ2ODN -4 / - 2 ✓ Closing fragment
10-31 16:40 80m -16 / - RA0SCA - / - 2 Partial capture
10-26 16:23 40m - / -23 IV3IPA -9 / - 4 ✓ Closing fragment
10-22 09:25 40m - / -16 IK4LZH -10 / - 2 ✓ Closing fragment
10-21 14:38 40m - / -16 IQ4JHE -6 / - 2 ✓ Closing fragment
10-17 16:00 40m - / -16 IQ3TR -12 / - 2 ✓ Closing fragment
10-17 14:30 40m - / -9 HB9HJI -12 / - 3 ✓ Closing fragment
10-14 14:34 40m - / 0 II5GG -14 / - 2 ✓ Closing fragment
10-11 14:05 40m - / -8 IQ3ABC -10 / - 2 Partial capture
10-08 09:58 40m - / -25 IQ2AAH -17 / - 2 ✓ Closing fragment
10-07 13:09 40m - / -10 IQ2AAH -20 / - 2 ✓ Closing fragment
10-06 06:06 80m - / -11 IQ2AAH -15 / - 2 ✓ Closing fragment
10-02 15:27 40m - / -12 IQ4JO -6 / - 2 ✓ Closing fragment
10-01 16:51 40m - / -3 IQ4JO +6 / - 2 ✓ Closing fragment
10-01 16:44 40m - / -3 IQ0YA -10 / - 2 ✓ Closing fragment
10-01 16:35 40m - / +1 IZ4AIF +5 / - 3 ✓ Closing fragment
10-01 14:18 40m - / -15 IQ2AAH -10 / - 2 ✓ Closing fragment
09-30 14:56 40m - / -9 IV3CMW -2 / - 2 ✓ Closing fragment
09-30 14:44 40m - / -19 OE3FVU -14 / - 2 ✓ Closing fragment
09-28 15:49 40m - / -14 I2OGV +4 / - 2 ✓ Closing fragment
09-27 09:28 40m - / -6 IZ5RKH -14 / - 2 ✓ Closing fragment
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

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
092545 -11  432  IU0SIB IK4LZH -16 (x2)
161915 -15 1388  IU0SIB IK6BSN -06
162300 -12 1052  IU0SIB IV3IPA -23 (x4)
071200  +8  691  IU0SIB HA7TM -11 (x2)
072845  -7 2549  IU0SIB E70A RR73
073515  +1 2541  IU0SIB DH5BM JO41 (x3)
074200  -3 2726  IU0SIB PD40EUDXF -22 (x2)
60m 
UTC    dB Audio  Message
061500 -22 2040  IU0SIB HB9ACA -05 (x2)
164830 -16 1357  DL1IP IU0SIB JN61
164930 -23 1634  HA0NDN IU0SIB JN61 (x2)
165100 -20 1169  CQ IU0SIB JN61                        a1
165115  -7 1634  IU0SIB HA0NDN -14
165115  -8 1484  IU0SIB DJ1NE JN39
165145 -11 1634  IU0SIB HA0NDN -14
165145  -9 1484  IU0SIB DJ1NE JN39
165300 -21 1484  DJ1NE IU0SIB -15
165315  -8 1429  IU0SIB DJ1NE R-06 (x2)
80m 
UTC    dB Audio  Message
060615 -14 1033  IU0SIB IQ2AAH -11 (x2)
164030 -20 1259  RA0SCA IU0SIB JN61 (x2)
164400  -3 1437  IU0SIB IZ2ODN -22 (x2)
164500  +3  702  IU0SIB DO2XB JO71 (x2)
20m 
UTC    dB Audio  Message
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
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

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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