IU4AOP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN54

Receiver-side FT8 activity involving IU4AOP, decoded by SO8OO in southeastern Poland. 165 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-09.

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 165 FT8 messages attributed to IU4AOP as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (82%), followed by 10 m (15%) and 40 m (2%). Several six-hour UTC windows tied for the largest share (79%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

165
Messages attributed
23
UTC dates decoded
52
Active 15-min windows
-14 dB
Estimated median S/N

Bands

80m · 1 40m · 3 20m · 136 10m · 25
First attributed message: 2026-06-08
Last attributed message: 2026-09-09 05:59 UTC

Observed FT8 message patterns

Attributed sample
165 messages
Active dates
23 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-19 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 59, moderate (-15 to -9 dB) 67, strong (≥ -8 dB) 39.

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 IU4AOP 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 IU4AOP

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
JN54 · 95 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,013 km (approx.)
Last such locator decoded
2026-09-09 05:59 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 UTCBandIU4AOP S/NCounterpartCounterpart S/NMsgsCapture
09-16 06:17 40m - / -11 DK7ZT -9 / - 3 Partial capture
09-16 06:17 40m - / - PE1NPS -14 / - 2 Partial capture
09-11 07:02 80m - / -19 DL0ZB -9 / - 3 Partial capture
09-09 06:13 40m - / +1 DK7ZT -9 / - 2 Partial capture
09-09 06:11 40m - / -11 Z68PX -16 / - 3 ✓ Closing fragment
09-09 06:05 40m - / -1 DK7ZT -2 / - 3 Partial capture
09-04 06:07 40m - / -15 AM42SDC -4 / - 3 Partial capture
09-04 05:47 80m -18 / -14 OE6TNO -1 / - 4 ✓ Closing observed
09-02 07:16 80m - / -20 DK7ZT -16 / - 5 Partial capture
08-31 06:35 40m - / -14 9A4ZM -1 / - 3 ✓ Closing fragment
08-31 06:34 40m - / -12 HA1ZW 0 / - 2 ✓ Closing fragment
08-30 06:37 20m - / -20 RA4PIS 0 / - 2 ✓ Closing fragment
08-28 09:40 20m -18 / +6 F4DHL -1 / +3 5 ✓ Full exchange observed
08-28 08:25 20m - / 0 EA1FMJ +2 / - 2 Partial capture
08-24 07:17 40m - / -12 DK7ZT -17 / - 3 Partial capture
08-24 07:11 40m - / -20 HA1ZW -1 / - 3 ✓ Closing fragment
08-05 08:42 20m - / -19 RA3Y -6 / - 2 ✓ Closing fragment
07-16 09:07 20m -16 / - DB2VS - / 0 2 Partial capture
07-15 13:43 20m -12 / - UB2FDL - / - 2 Partial capture
07-15 07:13 20m -11 / - PD1DRE - / -10 3 ✓ Closing fragment
07-15 06:55 20m -5 / - YO4GIY -14 / +7 2 ✓ Closing observed
07-13 14:22 10m - / +1 DK8HC -6 / - 2 Partial capture
07-13 14:20 10m -16 / - <...> - / -4 2 Partial capture
07-13 09:12 20m -14 / +3 <...> -23 / -23 2 Partial capture
07-11 07:17 20m -14 / - TF4CU - / -17 2 Partial capture
07-11 07:12 20m -17 / - TF4CU - / - 3 Partial capture
07-11 06:58 20m - / -13 YO4NF -10 / - 2 ✓ Closing fragment
07-11 05:51 20m -15 / - 4X1UF - / -17 5 ✓ Closing fragment
07-10 11:22 20m - / - EA5OL -4 / - 2 ✓ Closing fragment
07-10 11:12 20m - / -8 M7IJS -8 / - 2 ✓ Closing fragment
07-10 09:08 20m - / - PD1ADA -19 / - 2 Partial capture
07-09 06:09 20m -13 / - UZ5DM - / -3 2 Partial capture
07-08 08:42 10m -14 / - ES0RY - / -1 2 Partial capture
07-07 09:01 10m -19 / - RU9CZ - / -18 2 ✓ Closing fragment
07-06 16:51 20m -14 / - R6OF - / +1 4 ✓ Closing fragment
07-06 16:47 20m -18 / - PE50SCOUT - / - 2 Partial capture
07-06 14:58 20m -16 / - UA2FFD - / - 3 Partial capture
07-06 05:58 20m - / - F5IXN -19 / - 3 Partial capture
07-03 07:23 20m - / -18 DK7ZT -22 / - 4 Partial capture
07-03 07:11 20m - / -17 IS0KNW -16 / - 2 Partial capture
07-03 07:07 20m -16 / -17 IS0KNW -19 / -7 3 Partial capture
07-03 06:53 20m -16 / - AD9DU - / - 4 Partial capture
06-30 14:58 10m -18 / - ZS6MGM - / - 2 Partial capture
06-30 14:52 10m -18 / - OZ5VO - / - 2 ✓ Closing fragment
06-29 13:03 10m -8 / - YD5AYP - / -10 3 Partial capture
06-29 12:56 10m -9 / - LU2EI - / -14 5 Partial capture
06-29 12:50 10m -6 / - OZ1PDE - / +2 2 ✓ Closing fragment
06-26 09:23 20m -16 / - GJ0KYZ - / - 4 ✓ Closing fragment
06-26 09:11 20m -17 / - YT2FA - / -4 3 Partial capture
06-26 09:09 20m - / -5 IK4LZH +7 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
084800 -10  391  IU4AOP DD0AM RR73
055945 -19 1083  SP9DPM/P IU4AOP JN54
060545  +1 1907  IU4AOP DK7ZT -01 (x3)
061100 -14  345  IU4AOP Z68PX -11 (x3)
061300  -8 1906  IU4AOP DK7ZT +01 (x2)
061715 -17 2294  IU4AOP PE1NPS JO22 (x2)
061745  -5 1907  IU4AOP DK7ZT -11 (x3)
80m 
UTC    dB Audio  Message
071615 -16 1112  IU4AOP DK7ZT -20 (x5)
054745  +0 1259  IU4AOP OE6TNO -14 (x3)
054900 -18 1048  OE6TNO IU4AOP 73
070245  -6  917  IU4AOP DL0ZB -19 (x3)
20m 
UTC    dB Audio  Message
052400 -20 1681  IU4AOP F4FSY -03
074230 -12  657  IU4AOP R70OBN RR73
084215  -8  946  IU4AOP RA3Y -19 (x2)
061700 -24 1118  W4IMD IU4AOP R+01
082545  +2  384  IU4AOP EA1FMJ +00 (x2)
084045 -10 2019  IU4AOP YO9PH -13
094030 -20 1118  F4DHL IU4AOP JN54
094045  -2 1006  IU4AOP F4DHL +06
094100 -16 1117  F4DHL IU4AOP R+03
094115  +0 1006  IU4AOP F4DHL RRR
094130 -18 1117  F4DHL IU4AOP 73
063745  -1  888  IU4AOP RA4PIS -20 (x2)
10m 
UTC    dB Audio  Message
145300 -14 1120  A65MR IU4AOP JN54
145800 -20 1121  ZS6MGM IU4AOP JN54 (x2)
085800 -16 1127  RU9CZ IU4AOP JN54
085915 -16 1127  5Z4VJ IU4AOP JN54
090100 -18 1128  RU9CZ IU4AOP R-18 (x2)
084215 -17 1127  ES0RY IU4AOP JN54 (x2)
084300 -18 1079  IU4AOP RR73; TA2M <...> -18
142045 -18 1126  <...> IU4AOP JN54 (x2)
142200  -7  635  IU4AOP DK8HC JO42 (x2)
075915 -18 1377  IU4AOP RA9ACA RR73

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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