JH4VTV — FT8 station from Japan

Japan Grid: LN28

Amateur radio station JH4VTV operating from Japan (grid square LN28). 224 FT8 spots received at SO8OO WebSDR, 5 CQ calls, active on 40m, 20m, 10m, over 44 days, best SNR +19 dB. Heard between 2026-04-28 and 2026-07-25.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee

Overview

224
Total spots
5
CQ calls
44
Days active
-7 dB
Avg SNR

Bands

20m 40m 10m
First seen: 2026-04-28
Last seen: 2026-07-25 17:21 UTC

Frequent QSO partners observed at SO8OO

Stations JH4VTV worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJH4VTVPartnerPartner SNRMsgs
07-23 19:11 20m -18 / - F6EKI - / -17 2 ✓ Confirmed
07-20 18:36 20m -12 / - US3LX - / - 2 Partial
07-20 18:23 20m -21 / - UA3GU - / -16 2 Partial
07-20 17:44 20m -5 / - SV1OCN - / -16 2 Partial
07-19 04:52 10m -22 / - RZ3ZY - / - 2 Partial
07-17 20:41 20m -23 / - DH1JG - / - 2 Partial
07-17 20:38 20m +5 / - F6EKI - / - 3 Partial
07-17 20:27 20m -4 / - EA5BYS - / - 2 Partial
07-17 20:12 20m -12 / - II0NRG - / - 5 Partial
07-17 20:06 20m -18 / - R5AV - / -16 2 Partial
07-17 19:52 20m -2 / - II0NRG - / - 3 Partial
07-16 19:11 20m -13 / - DH1JG - / - 6 Partial
07-16 18:52 20m -11 / - CQ7FM - / -22 5 ✓ Confirmed
07-14 18:46 20m -18 / - RK3AF - / -10 2 ✓ Confirmed
07-07 21:45 20m +6 / - DL1R - / - 8 Partial
07-06 21:11 20m -16 / - DL1RB - / - 2 Partial
07-06 17:33 20m -6 / - RA3ZQ - / - 2 Partial
06-22 21:08 20m 0 / - EA8UP - / -19 6 Partial
06-21 18:38 20m -10 / - RZ6ALZ - / - 2 Partial
06-18 20:48 20m +18 / - IR0RCAG - / -10 2 Partial
06-16 09:41 20m -15 / - UG0B - / - 3 Partial
06-14 21:12 20m -6 / - 9A/DL3YAT - / -21 2 Partial
06-09 20:16 20m -14 / - BG2EFX - / - 2 Partial
06-09 20:06 40m -5 / - F5PBG - / - 4 Partial
06-08 18:15 40m +4 / - UT7HX - / - 3 Partial
06-06 18:54 20m -2 / - R3DFC - / - 2 Partial
06-04 07:21 10m -12 / - YD0JHX - / - 6 Partial
06-02 19:49 20m +6 / - Z34K - / - 6 Partial
06-02 19:30 20m -2 / - IZ2DPX - / - 6 Partial
06-02 18:49 20m -9 / - UF5F - / -14 5 ✓ Confirmed
06-02 18:31 20m -18 / - R1IV - / -16 3 Partial
06-02 18:29 20m -11 / - R3IDH - / - 2 Partial
06-02 18:28 20m -14 / - M0BEW - / -18 4 ✓ Confirmed
05-30 18:22 20m -14 / - BI2QMT - / - 2 Partial
05-29 20:37 20m -12 / - BA6IM - / - 2 Partial
05-27 18:11 20m -11 / - OE6TNO - / - 2 Partial
05-27 18:07 20m -12 / - BD8SN - / -16 2 Partial
05-27 18:02 20m +8 / - F4BYA - / - 2 Partial
05-25 18:38 20m +9 / - UA6AHR - / -16 2 Partial
05-24 14:21 20m -2 / - RU3QR - / -20 11 Partial
05-23 21:23 20m +14 / - F4JDM - / - 2 Partial
05-22 18:41 20m +7 / - IK4TVP - / -21 5 Partial
05-21 19:59 20m -13 / - UA9AAE - / -12 2 Partial
05-21 19:51 20m -9 / - IZ2ACM - / -15 3 Partial
05-18 20:51 20m +10 / - AO3RKB - / -15 2 ✓ Confirmed
05-14 20:27 20m -4 / - PY2KC - / -19 2 ✓ Confirmed
05-12 22:02 20m - / -15 A92AE -18 / - 2 Partial
05-12 21:21 20m -13 / - CT1FIU - / - 2 Partial
05-08 11:11 20m -2 / - R4FDK - / - 3 Partial
04-30 21:01 40m -2 / - D2UY - / -19 4 ✓ Confirmed

Station Log

20m 
UTC    dB  Freq  Message
173830  -5 2954  JH4VTV SV1OCN R-16 (x3)
181900  -8 2090  JH4VTV DM2CYN JO60
182330 -19 1342  JH4VTV UA3GU -16 (x2)
183215  -5 1968  JH4VTV UA3SNB -11
183615 -14 1552  JH4VTV US3LX KN89 (x2)
184045  -7 1326  JH4VTV DL5AVJ JO50
191100 -19 1692  JH4VTV F6EKI R-17 (x2)
084730 -19 1730  JH4VTV RR73; JP3RRW <...> -08
191630 -11 1422  JH4VTV RZ4AZ LN28 (x2)
10m 
UTC    dB  Freq  Message
101045 -20 1523  JH4VTV YE3AOV 73
112430 -22 1435  JH4VTV A71XX 73
072115 -13 1303  JH4VTV YD0JHX OI33 (x6)
131230 -12 1679  JH4VTV A60PC/14 R-16
135430 -24 1840  JH4VTV 7Q9BK R-21
142100 -23 1753  JH4VTV 7Q5MP R-15
043415 -21 1940  JH4VTV RD7LC -17
045230 -24 1396  JH4VTV RZ3ZY KO90 (x2)
40m 
UTC    dB  Freq  Message
210100  +1 2754  JH4VTV D2UY R-19 (x4)
181515 +10 2378  JH4VTV UT7HX KN69 (x3)
200615  -7 2345  JH4VTV F5PBG IN78 (x4)

SNR History by Band