4Z5NZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Israel Locator transmitted in a decoded message: KM72

Receiver-side FT8 activity involving 4Z5NZ, decoded by SO8OO in southeastern Poland. 136 related FT8 messages, 7 CQ messages, observed on 40m, 20m, across 13 UTC dates. Heard between 2026-05-30 and 2026-08-22.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

136
Related messages
7
CQ messages
13
UTC dates heard
-8 dB
Mean decoder S/N

Bands

20m 40m
First seen: 2026-05-30
Last seen: 2026-08-22 15:50 UTC

Frequent QSO partners observed at SO8OO

Stations 4Z5NZ worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by 4Z5NZ

Approximate centre of KM72, decoded 2026-08-22 17:46 UTC. A transmitted locator is not proof of the operator's permanent location.

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 UTCBand4Z5NZ S/NCounterpartCounterpart S/NMsgsCapture
08-22 17:47 20m - / -1 PD1RHK -2 / - 4 ✓ Closing fragment
08-22 17:43 20m - / - F1IQH -14 / - 2 Partial capture
08-22 17:37 20m -10 / -3 IK4RUX +4 / -11 4 ✓ Full exchange observed
08-22 17:32 20m - / - M9OOS +12 / - 3 Partial capture
08-22 17:31 20m - / - IU5HIU 0 / - 2 Partial capture
08-21 05:27 20m -9 / - UR5WCS - / - 4 Partial capture
08-21 04:51 20m -7 / -1 HA1BF +6 / - 3 ✓ Closing observed
08-19 04:21 40m - / - HA5LW -7 / - 3 Partial capture
08-18 18:57 40m - / - PA1PXL -16 / - 2 Partial capture
08-18 18:48 40m - / -12 F8DWH -13 / - 3 ✓ Closing fragment
08-18 18:47 40m - / - PA1PXL -11 / - 2 Partial capture
08-16 20:54 40m - / -11 RU3KA -8 / - 2 ✓ Closing fragment
08-16 20:40 40m - / - PA1GLD -14 / - 8 Partial capture
08-16 20:39 40m - / - ON5RZ -7 / - 8 Partial capture
08-16 20:39 40m - / - LB7ZG -2 / - 2 Partial capture
08-16 20:32 40m - / - SV1DZB -18 / - 2 Partial capture
08-16 20:30 40m - / -4 IU4PTA -14 / - 2 ✓ Closing fragment
08-16 05:48 20m - / 0 DL3HBF +6 / - 3 ✓ Closing fragment
08-16 05:39 20m - / -2 LZ1ZF -6 / - 2 ✓ Closing fragment
08-12 18:24 20m - / -15 PD0RDD -11 / - 3 Partial capture
08-12 18:20 20m - / -10 UR3HC -1 / - 2 ✓ Closing fragment
08-12 18:19 20m - / -25 PD1ADA -14 / - 8 ✓ Closing fragment
08-12 18:18 20m - / - OE9GWV +2 / - 2 Partial capture
08-12 18:14 20m - / - PD0RDD -9 / - 8 Partial capture
08-12 18:11 20m - / -21 IK4LZH -6 / - 4 Partial capture
08-12 18:09 20m - / - DL1R +5 / - 8 Partial capture
08-11 18:00 20m - / -10 UT4QM -17 / - 3 Partial capture
08-11 17:57 20m - / - M0IEP -16 / - 2 Partial capture
07-09 02:08 20m -8 / - R3DOF - / -2 2 ✓ Closing fragment
07-09 02:00 20m - / -8 WP4U -16 / - 5 ✓ Closing fragment
07-09 01:24 40m -12 / - WA6GXQ - / - 2 Partial capture
07-09 01:21 40m -17 / - WD8LOE - / - 2 Partial capture
07-08 18:21 40m - / -17 DL1IP -8 / - 2 ✓ Closing fragment
06-26 18:46 40m - / -8 UA3VVA -17 / - 4 ✓ Closing fragment
05-30 09:15 20m - / - PE9JAN -10 / - 2 Partial capture
05-30 08:54 20m - / - R7OV -13 / - 3 Partial capture
05-30 08:31 20m - / - OZ5AGJ -10 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
173230 +14  620  4Z5NZ M9OOS IO93 (x2)
173730  +1 1768  4Z5NZ IK4RUX JN54
173745 -10 1238  IK4RUX 4Z5NZ -11
173800  +5 1768  4Z5NZ IK4RUX R-03 (x2)
173915 -11 1238  CQ 4Z5NZ KM72
173945 -20 1238  RA8AM 4Z5NZ R-14
174300 -10 1207  4Z5NZ F1IQH JN27 (x2)
174645 -13 1238  CQ 4Z5NZ KM72
174730  -2 1239  4Z5NZ PD1RHK JO33 (x4)
40m 
UTC    dB Audio  Message
205445  -8 1032  4Z5NZ RU3KA -11 (x2)
184730 -10 1080  4Z5NZ PA1PXL JO21 (x2)
184800 -11 1375  4Z5NZ F8DWH IN94
184830 -14 1084  4Z5NZ LID
184830 -14 1375  4Z5NZ F8DWH R-12 (x2)
185700 -14 1080  4Z5NZ PA1PXL JO21 (x2)
042100  -3 2219  4Z5NZ HA5LW JN97 (x3)
042230  -9 1085  4Z5NZ F4HQL JN29
042830  -4 2930  4Z5NZ YO3GNF KN34

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.