IZ2ZSK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN55

Receiver-side FT8 activity involving IZ2ZSK, decoded by SO8OO in southeastern Poland. 86 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-21 and 2026-08-30.

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 86 FT8 messages attributed to IZ2ZSK as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (79%); the estimated median was -5 dB.

Overview

86
Messages attributed
6
UTC dates decoded
15
Active 15-min windows
-5 dB
Estimated median S/N

Bands

20m · 86
First attributed message: 2026-06-21
Last attributed message: 2026-08-30 16:26 UTC

Observed FT8 message patterns

Attributed sample
86 messages
Active dates
6 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-10 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 68.

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 IZ2ZSK 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 IZ2ZSK

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
JN55 · 69 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
945 km (approx.)
Last such locator decoded
2026-08-30 16:26 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 UTCBandIZ2ZSK S/NCounterpartCounterpart S/NMsgsCapture
08-31 15:19 20m - / -17 4L7T -15 / - 3 ✓ Closing fragment
08-30 16:21 20m -2 / - UA9FMT - / - 12 Partial capture
08-30 16:18 20m -8 / -11 DL3EBJ -1 / - 9 Partial capture
08-30 16:13 20m -1 / - CT1EDG - / -3 2 ✓ Closing fragment
08-30 16:10 20m 0 / - TA1MB - / +1 2 Partial capture
08-30 16:08 20m -4 / - TA4DX - / -13 3 Partial capture
08-30 15:52 20m - / -3 RC9WC -16 / - 2 ✓ Closing fragment
08-30 15:51 20m - / -10 EA5JLN +12 / - 2 ✓ Closing fragment
08-30 14:51 20m - / -15 F5DAN -9 / - 7 Partial capture
08-30 14:47 20m - / -14 PA0MUS -8 / - 3 ✓ Closing fragment
08-30 13:00 20m -4 / - OK1PHM/QRP - / - 2 Partial capture
08-30 12:55 20m -3 / - TA1SSO - / - 7 Partial capture
08-30 12:53 20m -6 / - G3EFG - / - 2 Partial capture
08-30 12:45 20m -2 / - G3EFG - / - 4 Partial capture
08-30 12:43 20m -1 / - EA8AT - / - 2 Partial capture
08-30 12:40 20m -3 / - TA1SW - / - 5 Partial capture
08-30 12:36 20m -2 / - EA8AT - / -16 7 Partial capture
08-30 12:24 20m -4 / - DL/HB9GUX - / -8 2 Partial capture
08-30 12:21 20m -10 / +10 LB8TG 0 / -15 3 ✓ Full exchange observed
08-30 12:13 20m -5 / -15 EC5M -4 / -5 4 ✓ Full exchange observed
08-30 12:09 20m -2 / - TA1SW - / - 7 Partial capture
08-30 11:58 20m - / -5 R4FS -2 / - 2 ✓ Closing fragment
08-30 11:56 20m - / +4 LZ6C -2 / - 2 ✓ Closing fragment
08-25 16:08 20m - / -15 EX7DY -11 / - 2 ✓ Closing fragment
08-25 15:38 20m - / -17 RK4PR -10 / - 5 ✓ Closing fragment
08-16 15:48 20m - / -9 HA3TBL -15 / - 3 ✓ Closing fragment
08-16 15:33 20m - / -11 F5URG -4 / - 2 ✓ Closing fragment
08-15 15:17 20m -10 / - EA3HKD - / - 4 Partial capture
07-05 16:50 20m -8 / - EA7KRZ - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
162215  -4  476  UA9FMT IZ2ZSK JN55
162230  +2 1672  IZ2ZSK DL3EBJ -11
162245  -3  476  UA9FMT IZ2ZSK JN55 (x9)
145445 -11 1632  IZ2ZSK M7JVT -07
151930 -18 2404  IZ2ZSK 4L7T -17 (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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