JA4VLK — FT8 station from Japan

Japan Grid: JN93

Amateur radio station JA4VLK operating from Japan (grid square JN93). 17 FT8 spots received at SO8OO WebSDR, active on 80m, 40m, 20m, 10m, over 6 days, best SNR +29 dB. Heard between 2026-04-28 and 2026-06-09.

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

Overview

Total spots

CQ calls

Days active

-2 dB

Avg SNR

Bands

80m 40m 20m 10m

First seen: 2026-04-28
Last seen: 2026-06-09 18:03 UTC

Frequent QSO partners observed at SO8OO

Stations JA4VLK worked most often, as logged from our receiver:

ZS5GJK · South Africa UA1RC · European Russia OE3KLU · Austria SV9TLU · Crete

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

Time	Band	JA4VLK	Partner	Partner SNR	Msgs
06-05 15:17	10m	-15 / -	7Q3CM	- / -9	2	Partial
06-03 17:09	40m	+4 / -	DL0HAM	- / -25	5	Partial
06-03 17:09	40m	-3 / -	DK7ZT	- / -19	2	Partial
06-03 17:08	40m	+26 / -	OE3KLU	- / -8	2	✓ Confirmed

Station Log

40m

UTC    dB  Freq  Message
170800 -14 2695  JA4VLK UA1RC -09
170800 +29 2974  JA4VLK OE3KLU -08 (x2)
170900  -4 1538  JA4VLK DK7ZT -19
170930  +6 1753  JA4VLK DL0HAM -25
170930  -2 1538  JA4VLK DK7ZT -19
171030  -5 2696  JA4VLK UA1RC RR73
171030  +5 1752  JA4VLK DL0HAM -25 (x4)
200300  -5 1289  JA4VLK E71MK JN93

10m

UTC    dB  Freq  Message
132715 -17 1059  JA4VLK ZS5GJK RR73
151700 -16 1563  JA4VLK 7Q3CM -09 (x2)

20m

UTC    dB  Freq  Message
155900  -8 2577  JA4VLK SV9TLU RR73

80m

UTC    dB  Freq  Message
203500 -19  621  JA4VLK ZS1J -05