I4USC — 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: JN54

Receiver-side FT8 activity involving I4USC, decoded by SO8OO in southeastern Poland. 340 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-18.

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 340 FT8 messages attributed to I4USC as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (59%), followed by 40 m (25%) and 10 m (16%). Several six-hour UTC windows tied for the largest share (69%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -2.9 dB.

Overview

340
Messages attributed
23
UTC dates decoded
46
Active 15-min windows
-2.9 dB
Estimated median S/N

Bands

80m · 199 40m · 85 10m · 56
First attributed message: 2026-06-06
Last attributed message: 2026-10-18 19:12 UTC

Observed FT8 message patterns

Attributed sample
340 messages
Active dates
23 UTC dates
Estimated median S/N
-2.9 dB
Estimated 10th-90th percentile
-15 to +8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 60, strong (≥ -8 dB) 249.

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 I4USC 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 I4USC

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 · 200 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,013 km (approx.)
Last such locator decoded
2026-10-18 19:11 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 UTCBandI4USC S/NCounterpartCounterpart S/NMsgsCapture
10-18 19:11 80m +8 / - DJ0JG - / -19 3 ✓ Closing fragment
10-18 19:08 80m +5 / -10 DL7COC -6 / -11 4 ✓ Full exchange observed
10-18 19:06 80m +4 / - HB9DWR - / -22 2 ✓ Closing fragment
10-17 21:01 80m - / +2 DL/N0PNG -2 / - 6 Partial capture
10-17 21:01 80m - / -6 OE5ABL +6 / - 2 ✓ Closing fragment
10-14 03:33 80m - / - R4FJ -8 / - 2 Partial capture
10-14 03:32 80m - / - F4IIX -8 / - 2 Partial capture
10-14 03:30 80m +4 / - ON8WR +4 / +9 6 ✓ Full exchange observed
10-14 03:29 80m +4 / -1 SQ1EG +9 / +7 5 ✓ Full exchange observed
10-14 03:26 80m +4 / -16 RW4HB -5 / -16 13 ✓ Full exchange observed
10-13 20:58 80m +7 / - HF50HSP -12 / -20 7 Partial capture
10-13 20:57 80m +7 / - IK1NPP - / - 2 ✓ Closing fragment
10-13 20:57 80m +6 / -15 EI4JFB -12 / -5 6 ✓ Full exchange observed
10-13 20:49 40m - / - F5NNN -3 / - 6 Partial capture
10-13 20:48 40m - / - RZ4FWA -11 / - 3 Partial capture
10-13 20:45 40m +6 / - RU6UR/QRP - / -13 5 Partial capture
10-11 20:31 80m +10 / - HS0ZOY - / - 10 Partial capture
10-11 20:26 80m -14 / - HS0ZOY - / - 2 Partial capture
10-11 16:18 80m -5 / +5 DK2AJ -11 / -3 5 ✓ Full exchange observed
10-11 16:13 80m -5 / +6 DA6PI -19 / -3 4 ✓ Full exchange observed
10-11 16:08 80m -3 / +1 OE5DML -4 / -7 5 ✓ Full exchange observed
10-09 20:39 80m - / - OE2GRN -7 / - 3 Partial capture
10-09 20:34 80m -2 / +5 OM3PR +2 / +3 6 ✓ Full exchange observed
10-09 20:32 80m 0 / - OE9GWV - / -12 3 ✓ Closing fragment
10-09 20:29 80m -4 / - TA1EVR - / -24 2 ✓ Closing fragment
10-09 20:27 80m +5 / - DO1TEM - / -13 2 ✓ Closing fragment
10-09 20:22 80m -4 / -4 LY8O +1 / -5 10 ✓ Full exchange observed
10-08 21:11 80m -6 / +6 DL4DP -14 / - 2 ✓ Closing observed
10-08 21:10 80m -4 / - DL9KM -7 / -15 9 Partial capture
10-08 21:10 80m - / - HB9RYB -7 / - 10 Partial capture
10-08 21:10 80m - / - LY2HM -5 / - 3 Partial capture
10-08 21:09 80m -6 / +2 DG9LBD -13 / -14 4 ✓ Full exchange observed
10-08 06:43 40m +3 / - ZL1VAH - / - 4 Partial capture
10-08 06:41 40m +5 / -25 SP3HIF -10 / - 8 Partial capture
10-08 06:40 40m +4 / - ZL1VAH - / - 2 Partial capture
10-08 06:38 40m +5 / - ON8WR - / -13 3 ✓ Closing fragment
10-08 06:34 40m +5 / - VK3AMP - / - 7 Partial capture
10-08 06:31 40m +6 / - EA1AHP - / +6 2 ✓ Closing fragment
10-06 20:38 80m - / +2 DH5BO -2 / - 4 ✓ Closing fragment
10-06 20:38 80m - / - HF5A +4 / - 6 Partial capture
10-06 20:30 40m -8 / - BG0FQU - / -17 4 ✓ Closing fragment
10-06 20:25 40m -6 / - BD8FWI - / - 7 Partial capture
10-02 22:48 80m +3 / - EI4JFB 0 / -5 10 Partial capture
09-28 20:41 40m -4 / - JH1FNU - / - 6 Partial capture
09-28 20:39 40m +1 / +7 F6FHZ -18 / -3 4 ✓ Full exchange observed
09-28 20:33 80m - / - DL1UDO +5 / - 3 Partial capture
09-28 03:16 80m -4 / -16 F4LTX -3 / 0 5 ✓ Full exchange observed
09-28 03:16 80m - / -18 R6ZB -10 / - 2 Partial capture
09-28 03:11 80m -4 / - SA4AGM - / -24 2 ✓ Closing fragment
09-27 20:17 80m -18 / - IU1HGN - / -5 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
190430  -8  496  I4USC F5LVR JN38
190615  +5  495  CQ I4USC JN54
190645  +5  495  HB9DWR I4USC -22 (x2)
190815  +9  495  CQ I4USC JN54
190830  -9 1774  I4USC DL7COC JN49
190845 +10  495  DL7COC I4USC -11
190900  -4 1774  I4USC DL7COC R-10
190915  +0  495  DL7COC I4USC RR73
191015  +6  495  CQ I4USC JN54 (x3)
191145  +6  495  DJ0JG I4USC -19 (x3)
40m 
UTC    dB Audio  Message
204545  -2 1495  RU6UR/QRP I4USC JN54 (x5)
204830 -10 1772  I4USC RZ4FWA LO23
204830 -22 1496  I4USC G5MJF R-16
204900 -10 1772  I4USC RZ4FWA LO23
204900  -4  820  I4USC F5NNN IN94
204930 -13 1772  I4USC RZ4FWA LO23
204930  +0  820  I4USC F5NNN IN94 (x5)
10m 
UTC    dB Audio  Message
123130 -22 2154  I4USC CN8NS +16
20m 
UTC    dB Audio  Message
154900  +1  632  I4USC A41KB -21 (x3)
231200  -4 1579  I4USC SP1ZMO JO73 (x4)

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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