JF4VZT — FT8 station from Japan
Amateur radio station JF4VZT operating from Japan. 106 FT8 spots received at SO8OO WebSDR, active on 160m, 80m, 40m, over 6 days, best SNR +19 dB. Heard between 2026-04-21 and 2026-05-13.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
106
Total spots
0
CQ calls
6
Days active
-4 dB
Avg SNR
Bands
80m
40m
160m
First seen: 2026-04-21
Last seen: 2026-05-13 17:17 UTC
Last seen: 2026-05-13 17:17 UTC
Frequent QSO partners observed at SO8OO
Stations JF4VZT worked most often, as logged from our receiver:
Activity Heatmap
Location
QSO Logbook (as observed from SO8OO)
Format: our rx / partner reports
| Time | Band | JF4VZT | Partner | Partner SNR | Msgs | |
|---|---|---|---|---|---|---|
| 05-13 19:15 | 160m | -2 / - | R6ZW | - / -12 | 3 | ✓ Confirmed |
| 05-05 19:40 | 160m | -6 / - | PA3DUU | - / - | 5 | Partial |
| 05-05 19:39 | 160m | -14 / - | SN6P | - / - | 9 | Partial |
| 05-05 19:38 | 160m | +10 / -21 | IR0RV | -14 / -9 | 5 | ✓ Complete |
| 05-05 19:32 | 160m | -7 / - | SN6P | - / - | 4 | Partial |
| 05-05 19:32 | 160m | -12 / - | PA3DUU | - / - | 2 | Partial |
| 05-05 19:28 | 160m | +11 / - | HA5AO | -8 / -8 | 5 | ✓ Verified |
| 05-05 19:27 | 160m | -17 / - | UA3ZNQ | -8 / -14 | 4 | ✓ Verified |
| 05-05 19:27 | 160m | -11 / - | ER3UA | - / - | 10 | Partial |
| 05-05 19:26 | 160m | - / -15 | UA4FEN | -8 / - | 2 | ✓ Confirmed |
| 05-05 19:26 | 160m | +4 / -18 | DK3UA | -8 / - | 4 | ✓ Verified |
| 05-05 19:26 | 160m | -7 / - | SN6P | - / - | 6 | Partial |
| 05-05 19:25 | 160m | -9 / - | PA3DUU | - / - | 9 | Partial |
| 05-05 19:23 | 160m | -2 / - | ON8DM | - / - | 3 | Partial |
| 05-05 19:23 | 160m | - / - | R4LQ | -9 / - | 3 | ✓ Confirmed |
| 05-05 19:21 | 160m | -16 / - | PE0JBE | - / - | 2 | Partial |
| 05-05 19:20 | 160m | -6 / -23 | IW4AOT | -13 / -10 | 5 | ✓ Complete |
| 05-05 19:17 | 160m | - / -17 | RN2T | -2 / - | 2 | ✓ Confirmed |
| 05-05 19:15 | 160m | +3 / -18 | YU1LD | -4 / -9 | 9 | ✓ Complete |
| 05-05 19:12 | 160m | +7 / -18 | OM2WQ | -3 / -10 | 7 | ✓ Complete |
| 04-24 22:07 | 40m | 0 / - | A60PE/5 | - / -17 | 2 | Partial |
| 04-22 20:46 | 80m | -3 / - | TF4M | - / -8 | 2 | ✓ Confirmed |
| 04-22 20:12 | 80m | - / -13 | D2UY | -6 / - | 2 | Partial |
| 04-22 20:09 | 80m | +16 / -10 | SQ2RAD | -10 / -25 | 6 | ✓ Complete |
| 04-22 20:02 | 80m | +17 / - | SQ2RAD | -9 / -25 | 3 | Partial |
| 04-21 20:18 | 160m | +2 / - | 9A4ZM | - / - | 2 | Partial |
| 04-21 20:18 | 160m | +16 / - | UT6HN | - / - | 4 | Partial |
| 04-21 20:17 | 160m | +4 / - | SP3BPU | - / - | 8 | Partial |
| 04-21 20:16 | 160m | +4 / -16 | S57A | -13 / -19 | 6 | Partial |
| 04-21 20:15 | 160m | +3 / - | RD6OX | -12 / -14 | 4 | ✓ Verified |
| 04-21 20:15 | 160m | 0 / - | SV6SYQ | - / -10 | 4 | Partial |
Station Log
160m
UTC dB Freq Message 194030 -2 2120 JF4VZT PA3DUU JO21 194030 -14 1455 JF4VZT SN6P JO80 194100 -4 2120 JF4VZT PA3DUU JO21 194100 -17 1455 JF4VZT SN6P JO80 194130 -8 2120 JF4VZT PA3DUU JO21 194130 -16 1451 JF4VZT SN6P JO80 194200 -9 2120 JF4VZT PA3DUU JO21 194200 -15 1451 JF4VZT SN6P JO80 (x2) 194230 -7 2120 JF4VZT PA3DUU JO21 194300 -13 1451 JF4VZT SN6P JO80 (x2) 191545 +0 2295 JF4VZT R6ZW KN98 (x3)
40m
UTC dB Freq Message 220415 -14 522 JF4VZT ZS1J RR73 220715 +3 1021 JF4VZT A60PE/5 -17 (x2)
80m
UTC dB Freq Message 200245 -9 2718 SQ2RAD JF4VZT PM64 200300 +17 239 JF4VZT SQ2RAD -25 (x2) 200945 -14 2854 SQ2RAD JF4VZT PM64 201000 +17 239 JF4VZT SQ2RAD -25 201015 -9 2854 SQ2RAD JF4VZT R-10 201030 +15 239 JF4VZT SQ2RAD RR73 201045 -9 2854 SQ2RAD JF4VZT 73 201130 +4 537 JF4VZT RA3OX KO90 201145 -9 2854 SQ2RAD JF4VZT -02 201245 -7 2854 D2UY JF4VZT R-13 (x2) 204615 -4 424 JF4VZT TF4M -08 (x2)