4Z5AV — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving 4Z5AV, decoded by SO8OO in southeastern Poland. 2,815 related FT8 messages, 788 CQ messages, observed on 80m, 60m, 40m, 20m, across 60 UTC dates. Heard between 2026-05-23 and 2026-08-20.
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
Frequent QSO partners observed at SO8OO
Stations 4Z5AV worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by 4Z5AV
Approximate centre of KM71, decoded 2026-08-20 19:36 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 UTC | Band | 4Z5AV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-20 19:46 | 60m | - / -6 | ER3ZW | 0 / - | 2 | ✓ Closing fragment |
| 08-20 19:36 | 60m | -13 / -4 | OJ0JR | +10 / -6 | 5 | ✓ Full exchange observed |
| 08-11 17:28 | 80m | -14 / - | PC5D | - / -5 | 6 | Partial capture |
| 08-11 17:12 | 80m | -16 / - | A41DV | - / -14 | 4 | ✓ Closing fragment |
| 08-10 16:46 | 80m | -15 / - | 4Z5KU | - / - | 2 | ✓ Closing fragment |
| 08-07 18:44 | 80m | -6 / - | <...> | - / - | 2 | Partial capture |
| 08-07 18:35 | 80m | -8 / -16 | <...> | -9 / -11 | 5 | Partial capture |
| 08-06 20:19 | 80m | - / - | DL1UDO | -12 / - | 4 | Partial capture |
| 08-06 20:17 | 80m | -10 / -12 | S57SWR | +1 / -16 | 5 | ✓ Full exchange observed |
| 08-06 20:17 | 80m | - / - | SP3PAQ | -1 / - | 4 | Partial capture |
| 08-06 20:14 | 80m | -6 / +1 | LA4GHA | -4 / -6 | 5 | ✓ Full exchange observed |
| 08-06 20:13 | 80m | - / - | LB6BK | -16 / - | 2 | Partial capture |
| 08-06 20:13 | 80m | -8 / -5 | UR5HAN | +8 / +3 | 4 | ✓ Full exchange observed |
| 08-06 20:11 | 80m | -12 / -7 | SQ2BXI | +19 / -7 | 5 | ✓ Full exchange observed |
| 08-06 20:09 | 80m | -8 / -17 | SP2DTW | 0 / -11 | 4 | ✓ Full exchange observed |
| 08-06 20:06 | 80m | -8 / -8 | E77EA | -6 / -14 | 6 | ✓ Full exchange observed |
| 08-06 20:05 | 80m | - / - | DK8CX | -6 / - | 2 | Partial capture |
| 08-06 20:05 | 80m | - / - | SP3PAQ | -5 / - | 5 | Partial capture |
| 08-06 20:02 | 80m | -12 / -6 | SQ8GBG | +7 / -5 | 7 | ✓ Full exchange observed |
| 08-06 20:02 | 80m | -19 / - | DO1DMR | - / -19 | 3 | Partial capture |
| 08-06 19:58 | 80m | -17 / -6 | IV3DSG | -12 / -11 | 3 | Partial capture |
| 08-06 19:57 | 80m | -12 / - | JH0NOS | - / -14 | 2 | ✓ Closing fragment |
| 08-06 19:53 | 80m | -12 / - | OH4JK | 0 / - | 4 | ✓ Closing observed |
| 08-06 19:51 | 80m | -10 / -13 | SP7SZJ | +6 / -14 | 4 | ✓ Full exchange observed |
| 08-06 19:50 | 80m | -11 / -23 | BI6AN | -20 / -10 | 3 | ✓ Full exchange observed |
| 08-06 19:47 | 80m | -8 / - | UR0UF | +4 / -10 | 4 | ✓ Closing observed |
| 08-06 19:44 | 80m | -6 / -2 | HB9IRO | -16 / -17 | 4 | ✓ Full exchange observed |
| 08-06 19:43 | 80m | -8 / -7 | R2GFD | -17 / -15 | 3 | ✓ Full exchange observed |
| 08-06 19:43 | 80m | -8 / -14 | ON1BMM | -4 / -20 | 9 | ✓ Full exchange observed |
| 08-06 19:41 | 80m | -6 / - | R7IQ | -20 / -16 | 3 | ✓ Closing observed |
| 08-06 19:39 | 80m | -8 / -3 | RJ6ON | -22 / - | 2 | ✓ Closing observed |
| 08-05 19:15 | 80m | - / - | DO9PV | -6 / - | 5 | Partial capture |
| 08-05 19:12 | 80m | -4 / +3 | LA4GHA | -5 / -13 | 5 | ✓ Full exchange observed |
| 08-05 19:08 | 80m | -6 / - | SV4YQ | - / - | 2 | Partial capture |
| 08-05 19:07 | 80m | -4 / -7 | LB5WB | -3 / -19 | 4 | ✓ Full exchange observed |
| 08-05 19:01 | 80m | +2 / - | M0GDX | - / 0 | 2 | ✓ Closing fragment |
| 08-05 19:00 | 80m | -1 / -5 | RW6MZ | 0 / -4 | 9 | ✓ Full exchange observed |
| 08-05 18:59 | 80m | -2 / -11 | R9HAG | -10 / -18 | 5 | ✓ Full exchange observed |
| 08-05 18:57 | 80m | +1 / - | DL2RN | -14 / -6 | 4 | ✓ Closing observed |
| 08-05 18:55 | 80m | +3 / +4 | R1TET | -4 / -7 | 7 | ✓ Full exchange observed |
| 08-05 18:53 | 80m | +2 / - | M0GDX | - / - | 3 | Partial capture |
| 08-05 18:50 | 80m | -1 / -5 | OM7FS | +7 / -9 | 6 | ✓ Full exchange observed |
| 08-05 18:49 | 80m | +1 / -14 | RL3FA | -2 / - | 4 | ✓ Closing observed |
| 08-05 18:48 | 80m | -2 / -14 | IV3JRW | -17 / -17 | 5 | ✓ Full exchange observed |
| 08-05 18:47 | 80m | +1 / - | UB4CLH/0 | - / -3 | 2 | Partial capture |
| 08-05 18:33 | 80m | +8 / - | EN35UKR | - / -9 | 5 | Partial capture |
| 08-05 18:31 | 80m | +11 / -1 | EW1I | +6 / -8 | 5 | ✓ Full exchange observed |
| 08-05 18:28 | 80m | +8 / - | R5FN/6/M | - / -5 | 4 | Partial capture |
| 08-05 18:26 | 80m | +10 / - | UR0UF | +16 / -7 | 4 | Partial capture |
| 08-05 18:25 | 80m | +6 / - | SV2BWY | 0 / -14 | 5 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 012615 -1 2822 CE2SV 4Z5AV -04 (x8) 193645 -14 1315 OJ0JR 4Z5AV KM71 193700 +10 378 4Z5AV OJ0JR -04 193715 -14 1315 OJ0JR 4Z5AV R-06 193730 +10 378 4Z5AV OJ0JR RR73 193745 -11 1315 OJ0JR 4Z5AV 73 194630 -1 2025 4Z5AV ER3ZW -06 (x2)
UTC dB Audio Message 165200 -17 1875 CQ 4Z5AV KM71 (x4) 173145 -7 1002 4Z5AV 4X5LL KM71 171215 -18 1996 A41DV 4Z5AV KM71 (x4) 172815 -13 1897 PC5D 4Z5AV -05 (x6)
UTC dB Audio Message 192630 -11 1087 4Z5AV UA3SCU -14 (x3) 225200 +1 2938 D4OL 4Z5AV KM71 (x6) 204645 -14 1416 TN8GD 4Z5AV KM71 (x2) 204730 -7 2766 4Z5AV SH0T JO99 (x2) 021830 -3 2652 4Z5AV RK3DWA/3 -14 (x2)
UTC dB Audio Message 182700 -3 3039 D4OL 4Z5AV -16 (x5) 183415 +2 3039 VU2WJ 4Z5AV R-13 (x2) 164645 -17 943 TN8GD 4Z5AV RR73 164700 -8 942 4Z5AV MM0NNA IO75 164745 -16 944 TA3XEE 4Z5AV +00 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.