I1YHU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN33

Receiver-side FT8 activity involving I1YHU, decoded by SO8OO in southeastern Poland. 399 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 34 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 399 FT8 messages attributed to I1YHU as the transmitting token by decoded message structure across 34 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (60%), followed by 20 m (31%) and 80 m (9%). The busiest six-hour window was 16:00-22:00 UTC, containing 49% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.9 dB.

Overview

399
Messages attributed
34
UTC dates decoded
102
Active 15-min windows
-9.9 dB
Estimated median S/N

Bands

80m · 37 40m · 239 20m · 123
First attributed message: 2026-06-06
Last attributed message: 2026-09-20 07:19 UTC

Observed FT8 message patterns

Attributed sample
399 messages
Active dates
34 UTC dates
Estimated median S/N
-9.9 dB
Estimated 10th-90th percentile
-19 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 101, moderate (-15 to -9 dB) 118, strong (≥ -8 dB) 180.

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 I1YHU 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 I1YHU

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
JN33 · 231 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,332 km (approx.)
Last such locator decoded
2026-09-20 07:19 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 UTCBandI1YHU S/NCounterpartCounterpart S/NMsgsCapture
09-20 07:19 40m -16 / 0 II6IALU -17 / -2 3 Partial capture
09-13 15:09 40m -2 / - EA6ZS - / -25 3 ✓ Closing fragment
09-13 14:52 40m -12 / - II6IGTO - / - 2 Partial capture
09-12 07:56 40m - / - DG3AWF -13 / - 3 Partial capture
09-05 08:41 40m -18 / - IV3KFD - / -2 2 Partial capture
09-04 15:05 40m -16 / - DJ0MAB - / - 3 Partial capture
09-04 15:02 40m -15 / +6 HA3HM -11 / - 3 Partial capture
09-02 15:32 40m -16 / - II7MGLE - / +9 5 Partial capture
08-31 13:19 20m -18 / - MI0UFT - / -5 3 ✓ Closing fragment
08-31 13:18 20m - / +9 M8GGQ -12 / - 3 Partial capture
08-31 08:47 20m 0 / - DJ5PT +5 / +1 5 ✓ Full exchange observed
08-31 08:47 20m +1 / -5 IR7MGGC +8 / +9 2 Partial capture
08-31 08:43 20m +6 / - II7MGBR - / - 2 Partial capture
08-31 08:38 20m 0 / - II7MGBR - / - 3 Partial capture
08-31 08:27 20m +1 / -6 IR7MGGC +9 / +7 3 Partial capture
08-31 06:22 40m -13 / - II7MGBR - / +4 3 Partial capture
08-31 06:18 40m -14 / +3 II7MGXX -11 / +7 2 Partial capture
08-31 06:16 40m -6 / +2 II7MGBT -9 / - 3 Partial capture
08-30 07:43 40m -19 / - II7MGXX -20 / - 3 Partial capture
08-30 07:40 40m -24 / +2 IR7MGGC -19 / -5 2 Partial capture
08-29 19:14 80m - / -13 II7MGML -10 / - 2 Partial capture
08-29 13:54 20m -11 / - II7MGBT - / -6 2 Partial capture
08-27 19:58 20m 0 / - US2YW - / +5 2 ✓ Closing fragment
08-27 19:55 20m 0 / -17 II7MGBT -3 / -9 7 Partial capture
08-27 19:11 20m +1 / - II7MGML - / - 4 Partial capture
08-27 19:01 20m -2 / - II7MGML - / - 7 Partial capture
08-27 08:42 20m +6 / - F5PBG - / -17 2 ✓ Closing fragment
08-27 08:40 20m +10 / -8 IR7MGGC +10 / -9 3 Partial capture
08-26 21:03 20m -7 / -19 II7MGBR -2 / -11 13 Partial capture
08-26 19:22 80m -9 / - II7MGML - / -7 2 Partial capture
08-26 09:28 20m +1 / - <...> - / - 3 Partial capture
08-25 07:12 20m -2 / -9 II7MGBT -4 / +8 11 Partial capture
08-25 06:50 40m -14 / - EA1AEC - / -10 2 ✓ Closing fragment
08-25 06:47 40m -16 / - II7MGBT - / +7 2 Partial capture
08-25 06:41 20m -13 / -8 II7MGXX -4 / -25 6 Partial capture
08-24 13:35 20m -11 / - OZ9GA/P - / -8 3 ✓ Closing fragment
08-23 18:26 40m -1 / - II7MGBA -3 / - 5 Partial capture
08-23 18:24 40m -1 / - II7MGBT - / - 2 Partial capture
08-23 14:45 20m -8 / +5 II7MGBA +9 / - 3 Partial capture
08-23 14:40 20m -2 / - II7MGBA - / - 4 Partial capture
08-23 03:44 40m 0 / -17 IR7MGGC -7 / -12 20 Partial capture
08-23 03:41 40m +2 / - IR7MGGC - / - 2 Partial capture
08-22 12:18 20m -5 / -11 II7MGBT +9 / -6 3 Partial capture
08-21 07:01 40m - / - UT4PA +7 / - 3 Partial capture
07-21 20:57 40m - / -14 UA4FKT -5 / - 4 Partial capture
07-21 20:32 40m -17 / - IQ0AK - / - 8 Partial capture
07-21 20:26 40m -14 / - IQ0AK - / - 3 Partial capture
07-21 18:31 40m -21 / - IQ0AK - / - 2 Partial capture
07-21 18:25 40m -7 / -1 IQ4JO -2 / - 2 ✓ Closing observed
07-20 19:27 80m - / -5 IQ0AK -9 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
200130 -17 2054  I1YHU IQ0AK RR73 (x3)
183015  +8  935  I1YHU II7MGBA -21
183145  +2 1209  I1YHU II7MGXX -10
191630 -11 1000  II7MGML I1YHU JN33 (x3)
185400 -19  963  <II7MGXX> I1YHU JN33
191400  -9 1002  I1YHU II7MGML -13 (x2)
050030 -18 1697  I1YHU IR7MGGC -09
194630 -24 2000  SP5DFK/QRP I1YHU R+06
182900 +12 2276  I1YHU II8IHBC -13
183400  -2  558  I1YHU II9IAGM -07
40m 
UTC    dB Audio  Message
145000 -21 1150  I1YHU SP9DPM/P +00
145215 -13 1296  <II6IGTO> I1YHU JN33 (x2)
145515  -7  995  II4IANT I1YHU JN33
150600  -6 1810  I1YHU II6IALU +12
150930  -1 2991  EA6ZS I1YHU JN33 (x3)
074815 -22 1641  II0IHMG I1YHU JN33
115515 -24 1781  II6IGTO I1YHU R-05
071500 -21 1135  I1YHU RR73; IS0JHV <...> +14
071915 -18 2157  II6IALU I1YHU JN33
071930 -17 2157  I1YHU II6IALU +00
071945 -15 2157  II6IALU I1YHU R-02
072100 -16 1077  I1YHU II0IHMG +07
20m 
UTC    dB Audio  Message
084700  +8  756  I1YHU IR7MGGC -05
084715  +1  755  IR7MGGC I1YHU R+09
084730  +5 2047  I1YHU DJ5PT JO32 (x2)
084815  +1  755  DJ5PT I1YHU +01
084830 +10 2047  I1YHU DJ5PT R+11
084845  +0  755  DJ5PT I1YHU RR73
084945  -4  755  DJ0MAB I1YHU RR73
131800  -9 2528  I1YHU M8GGQ +09 (x2)
131900 -22 1872  MI0UFT I1YHU JN33
131900  -9 2527  I1YHU M8GGQ +09
131930 -19 1873  MI0UFT I1YHU R-05 (x2)
160615 -11 2103  II7MGBT I1YHU JN33

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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