IU3MBY — 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: JN55

Receiver-side FT8 activity involving IU3MBY, decoded by SO8OO in southeastern Poland. 250 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-13.

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 250 FT8 messages attributed to IU3MBY as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (91%), followed by 40 m (9%). Several six-hour UTC windows tied for the largest share (69%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8.5 dB.

Overview

250
Messages attributed
7
UTC dates decoded
32
Active 15-min windows
-8.5 dB
Estimated median S/N

Bands

40m · 22 20m · 228
First attributed message: 2026-06-06
Last attributed message: 2026-09-13 08:40 UTC

Observed FT8 message patterns

Attributed sample
250 messages
Active dates
7 UTC dates
Estimated median S/N
-8.5 dB
Estimated 10th-90th percentile
-20 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 51, moderate (-15 to -9 dB) 74, strong (≥ -8 dB) 125.

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 IU3MBY in decoded directed-looking exchanges:

Most frequent locator attributed to IU3MBY

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
JN55 · 154 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
945 km (approx.)
Last such locator decoded
2026-09-13 08:35 UTC

Other locator fields attributed to this token: JN66 (6) and JN63 (1).

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 UTCBandIU3MBY S/NCounterpartCounterpart S/NMsgsCapture
09-13 08:35 40m -20 / - IQ4JO - / -2 2 ✓ Closing fragment
09-13 08:28 40m -19 / - UX7QV -6 / -7 12 Partial capture
09-13 08:26 40m -20 / - DL1FAM -8 / - 3 ✓ Closing observed
09-13 08:24 40m -22 / -16 UT4PA +3 / -11 7 ✓ Full exchange observed
09-13 08:22 40m - / +3 HG8LXL -5 / - 4 ✓ Closing fragment
08-29 07:40 20m -14 / - Z62NS - / - 3 Partial capture
08-16 07:51 20m -6 / - VJ6X - / - 6 Partial capture
08-16 07:43 20m -11 / - VJ6X - / - 2 Partial capture
08-16 07:35 20m -4 / - VJ6X - / - 5 Partial capture
08-16 07:24 20m -6 / - <...> - / - 2 Partial capture
08-16 07:19 20m -11 / - <...> - / - 3 Partial capture
08-16 07:15 20m -12 / - VK5LSD - / - 2 Partial capture
08-16 07:10 20m -11 / - OA4ENN - / - 4 Partial capture
08-16 07:05 20m -14 / - OA4ENN - / - 5 Partial capture
08-16 07:04 20m -2 / - KP3RE - / -14 2 Partial capture
08-16 07:02 20m -7 / - VK5RM - / - 2 ✓ Closing fragment
08-16 06:59 20m -16 / - XQ1KK - / - 5 Partial capture
08-16 06:57 20m -18 / - OA4ENN - / - 2 Partial capture
08-16 06:52 20m -24 / - HD5EC - / -17 2 Partial capture
08-16 06:48 20m -14 / - VK2JJM - / - 4 Partial capture
08-16 06:45 20m -10 / - VK2BC - / -22 4 ✓ Closing fragment
08-16 06:43 20m -9 / - VK2JJM - / - 3 Partial capture
08-16 06:39 20m -12 / - VK2BC - / -21 3 Partial capture
08-16 06:34 20m -13 / - VK2BC - / - 3 Partial capture
08-16 06:28 20m -8 / - VK1KAZ - / - 7 Partial capture
08-16 06:27 20m -12 / - VK2VAR - / -21 2 Partial capture
08-16 06:21 20m -23 / - HK3W - / - 3 Partial capture
08-16 06:11 20m -16 / - HK3W - / - 6 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
082930  -8 2116  IU3MBY UX7QV KN29 (x2)
083015 -17 2116  UX7QV IU3MBY -07
083030  -4 2116  IU3MBY UX7QV KN29
083045 -17 2116  UX7QV IU3MBY -07
083100  -4 2116  IU3MBY UX7QV KN29
083115 -19 2116  UX7QV IU3MBY -07 (x3)
083515 -23 2116  CQ IU3MBY JN55
083545 -20 2116  IQ4JO IU3MBY -02 (x2)
083715 -21 2116  GM6URC IU3MBY R-24
083730 -14  233  IU3MBY HA3HZ JN96
084015 -20 2116  GM6URC IU3MBY R-24
20m 
UTC    dB Audio  Message
074345 -11 2528  VJ6X IU3MBY JN55 (x8)
074015 -12 2166  Z62NS IU3MBY JN66
074045 -14 2166  CQ IU3MBY JN66 (x3)
074215 -18 2166  Z62NS IU3MBY JN66 (x2)
153315 -22 1024  IU3MBY 4Z5PT -13

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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