IU8DSS — 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: JN70

Receiver-side FT8 activity involving IU8DSS, decoded by SO8OO in southeastern Poland. 41 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-07-15 and 2026-10-11.

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 41 FT8 messages attributed to IU8DSS as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (54%), followed by 80 m (37%) and 10 m (10%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (68%); the estimated median was -19 dB.

Overview

41
Messages attributed
9
UTC dates decoded
20
Active 15-min windows
-19 dB
Estimated median S/N

Bands

80m · 15 40m · 22 10m · 4
First attributed message: 2026-07-15
Last attributed message: 2026-10-11 19:37 UTC

Observed FT8 message patterns

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

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 3.

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 IU8DSS 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 IU8DSS

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
JN70 · 21 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,175 km (approx.)
Last such locator decoded
2026-10-11 19:37 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 UTCBandIU8DSS S/NCounterpartCounterpart S/NMsgsCapture
10-11 19:37 80m -16 / - IZ8VYF - / - 2 Partial capture
10-11 19:05 80m -10 / -4 IZ8XQC +6 / - 4 ✓ Closing observed
10-10 05:52 40m - / - UW8SM -1 / - 7 Partial capture
10-10 05:47 40m -20 / - IR8PR - / -14 6 ✓ Closing fragment
10-10 05:35 40m -22 / - IR8PR - / - 2 Partial capture
10-09 21:26 80m -16 / -8 IZ8XXE -2 / +2 4 ✓ Full exchange observed
10-09 20:14 40m -16 / - IU8CEU - / - 2 Partial capture
10-08 06:41 40m - / - 9A4ZM -6 / - 2 Partial capture
10-07 21:40 80m -22 / - IZ8XXE - / -8 2 ✓ Closing fragment
10-07 20:15 80m - / -16 YO4NF +2 / - 2 Partial capture
10-07 20:14 80m - / -8 IR8PR 0 / - 2 ✓ Closing fragment
10-07 19:44 40m - / -7 IZ8DFO -18 / - 2 Partial capture
10-07 19:03 80m - / - 9A5E +7 / - 7 Partial capture
10-07 19:02 80m -23 / -9 IZ8VYF -24 / -1 4 ✓ Full exchange observed
10-07 18:57 40m - / 0 IZ8XQC -6 / - 2 ✓ Closing fragment
10-06 19:28 40m -11 / - IZ8XQC - / -15 4 ✓ Closing fragment
10-06 10:26 40m - / - HG8LXL -11 / - 3 Partial capture
10-05 19:24 80m - / -16 IZ8XQC +6 / - 2 ✓ Closing fragment
10-05 09:09 40m - / - 9A4ZM -19 / - 2 Partial capture
10-03 19:57 40m - / - EA3HKY -8 / - 3 Partial capture
10-03 19:53 40m -9 / -12 IR8PR -14 / - 5 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
212615 -14 2485  IZ8XXE IU8DSS R+02
212630  -2 2485  IU8DSS IZ8XXE RR73
212645 -19 2485  IZ8XXE IU8DSS 73
212730  +3 2486  IU8DSS YO4NF -14
190515 -10  477  IZ8XQC IU8DSS JN70 (x2)
190600  +4  477  IU8DSS IZ8XQC -04 (x2)
192615 -20 1700  IZ8DFO IU8DSS 73
193515 -19 2368  IQ8DO IU8DSS R-01
193530  +6 2369  IU8DSS RR73; IK5ZTT <...> -06
193700 -18 2108  IZ8VYF IU8DSS JN70 (x2)
205330  +1 2191  IU8DSS IZ8XXE +00
205400  +4 2191  IU8DSS RR73; IK2YYC <...> -06
40m 
UTC    dB Audio  Message
053615 -21 1823  IR8PR IU8DSS JN70 (x7)
055200  -8  630  IU8DSS UW8SM KN28
055200 -14 1636  IU8DSS IK4TVP -07
055230  +1  630  IU8DSS UW8SM KN28 (x6)

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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