I5UOA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN53

Receiver-side FT8 activity involving I5UOA, decoded by SO8OO in southeastern Poland. 371 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 41 UTC dates in the available aggregate history. Observed between 2026-06-07 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 371 FT8 messages attributed to I5UOA as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (49%), followed by 20 m (48%) and 10 m (3%). The busiest six-hour window was 04:00-10:00 UTC, containing 47% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

371
Messages attributed
41
UTC dates decoded
121
Active 15-min windows
-14 dB
Estimated median S/N

Bands

40m · 182 20m · 178 10m · 11
First attributed message: 2026-06-07
Last attributed message: 2026-09-20 18:28 UTC

Observed FT8 message patterns

Attributed sample
371 messages
Active dates
41 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-21 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 144, moderate (-15 to -9 dB) 147, strong (≥ -8 dB) 80.

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 I5UOA 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 I5UOA

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
JN53 · 214 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,089 km (approx.)
Last such locator decoded
2026-09-20 17:56 UTC

Other locator fields attributed to this token: JN62 (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 UTCBandI5UOA S/NCounterpartCounterpart S/NMsgsCapture
09-20 18:28 40m -5 / -3 3Z100PKP -9 / -6 2 Partial capture
09-20 13:52 40m -20 / -14 SQ100PKP -12 / -8 3 Partial capture
09-17 13:51 40m - / -5 I0XNH -18 / - 2 ✓ Closing fragment
09-11 09:56 40m -19 / - IK4TVP -17 / - 3 ✓ Closing observed
09-11 08:14 40m - / -19 HF100PKP -13 / - 2 Partial capture
09-11 07:33 40m -13 / -11 SP100PKP -16 / -11 13 Partial capture
09-11 07:09 40m -13 / - SP/DO7JVK - / -1 6 Partial capture
09-11 07:04 40m -8 / - II0IHMG - / +1 2 Partial capture
09-10 14:38 40m -16 / -12 GX4RAF/P -15 / -7 7 ✓ Full exchange observed
09-10 09:01 40m - / -15 SO100PKP -21 / - 2 Partial capture
09-10 07:27 40m -20 / - SQ100PKP - / -6 2 Partial capture
09-09 06:46 40m - / - PE1NPS -13 / - 3 Partial capture
09-09 06:45 40m - / -6 SO100PKP -8 / - 2 Partial capture
09-08 07:07 40m -22 / - SQ100PKP - / -11 2 Partial capture
09-07 14:26 40m - / - IK2ZJR -8 / - 10 Partial capture
09-06 05:58 40m -14 / - N98HDE - / - 8 Partial capture
09-06 05:02 40m -11 / - UA3UBV/1 - / - 3 Partial capture
09-06 04:57 40m -6 / - EA6NB - / - 2 Partial capture
09-05 18:22 40m - / -18 OK1WCF +6 / - 4 ✓ Closing fragment
09-05 18:21 40m -6 / -11 SO100PKP 0 / -11 3 Partial capture
09-05 05:18 40m -10 / - OA4ENG - / -18 2 Partial capture
09-05 05:14 40m -5 / - ZL2AGY - / - 3 Partial capture
09-04 07:44 40m - / -7 3Z100PKP -12 / - 2 Partial capture
09-04 06:47 40m - / - PE1NPS -6 / - 2 Partial capture
09-04 06:45 40m -12 / - LX1NT - / - 2 ✓ Closing fragment
09-03 06:31 40m -10 / - DJ0MAB - / -9 2 ✓ Closing fragment
09-03 06:21 40m -16 / +2 DK5UR -12 / -13 4 ✓ Full exchange observed
09-03 05:07 40m -2 / - KA1MXL - / -20 6 ✓ Closing fragment
09-03 05:02 40m -17 / +4 DJ0MAB -5 / +3 4 Partial capture
09-03 04:59 40m -14 / - WD4OBP - / -14 5 ✓ Closing fragment
09-02 17:14 40m -11 / - EX7CQ - / - 6 Partial capture
09-02 16:40 40m -14 / - II7MGBR - / - 4 Partial capture
09-02 16:12 40m - / - US2YW -2 / - 3 Partial capture
09-02 08:51 40m - / - DJ0MAB -18 / - 2 Partial capture
09-02 08:37 40m - / -11 DK5UR -12 / - 2 ✓ Closing fragment
09-02 07:56 40m - / - OK1HEH -8 / - 2 ✓ Closing fragment
09-02 07:17 40m - / - F5PBG -7 / - 2 Partial capture
09-02 07:16 40m - / - F4FSY -21 / - 2 Partial capture
09-02 07:16 40m - / - YO3GNF -8 / - 2 Partial capture
08-24 12:06 20m -11 / - YO6LM +3 / - 2 ✓ Closing observed
08-24 12:06 20m -11 / - OZ9GA/P - / -4 2 ✓ Closing fragment
08-24 12:03 20m -10 / - GM0GMN -11 / +3 5 ✓ Full exchange observed
08-24 12:00 20m - / - CT7AUT +9 / - 2 ✓ Closing fragment
08-24 07:29 20m -3 / +4 II7MGBT +1 / +4 2 Partial capture
08-24 06:52 20m -14 / -1 5B4AMX -4 / - 2 Partial capture
08-24 06:37 40m -15 / +5 IR7MGGC -13 / +4 2 Partial capture
08-06 14:29 20m -15 / - EI9KF - / +5 2 ✓ Closing fragment
08-02 07:57 20m - / -9 UI6O -6 / - 3 Partial capture
08-02 06:51 20m - / - R2AL 0 / - 6 Partial capture
08-01 10:08 20m - / -2 DK9NP -9 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
081430 -14 2152  I5UOA HF100PKP -11
095230 +10 1297  I5UOA SN100PKP -05
095300  +6 1298  I5UOA RR73; SP4GDW <...> -24
095530 -16 1155  I5UOA IQ2AAH +15
095630 -15 1808  I5UOA IK4TVP +26 (x2)
095745 -19 1155  IK4TVP I5UOA 73
135130 -19 1172  I5UOA I0XNH -05 (x2)
135230 -12 2110  I5UOA SQ100PKP -14
135315 -21 2110  SQ100PKP I5UOA R-08 (x2)
175645  -7 1535  GD4EIP I5UOA JN53
182800  -9 2063  I5UOA 3Z100PKP -03
182815  -5 2064  3Z100PKP I5UOA R-06
20m 
UTC    dB Audio  Message
065245 -14 1403  5B4AMX I5UOA JN53
065430  -4  912  I5UOA 5B4AMX -01
072930  +1 2106  I5UOA II7MGBT +04
072945  -3 2105  II7MGBT I5UOA R+04
120045  +8 1472  I5UOA CT7AUT +16 (x2)
120330 -10 1397  GM0GMN I5UOA JN53
120345  -8 2735  I5UOA GM0GMN +11
120400  -9 1397  GM0GMN I5UOA R+03
120415 -14 2735  I5UOA GM0GMN RR73
120430 -12 1397  GM0GMN I5UOA 73
120600 -12 1397  OZ9GA/P I5UOA R-04 (x2)
120645  +3 2136  I5UOA YO6LM KN25
120800 -11 1397  YO6LM I5UOA RR73
10m 
UTC    dB Audio  Message
165815 -20 1416  I5UOA R6DV 73
100715 -24 1910  I5UOA DN9KUK RR73
113245 -14 2162  PT7PT I5UOA JN53 (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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