JH3CUL — FT8 station from Japan

Japan Grid: ?

Amateur radio station JH3CUL operating from Japan. 50 FT8 spots received at SO8OO WebSDR, active on 20m, 10m, over 14 days, best SNR +15 dB. Heard between 2026-05-13 and 2026-07-25.

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

Overview

50
Total spots
0
CQ calls
14
Days active
-9 dB
Avg SNR

Bands

20m 10m
First seen: 2026-05-13
Last seen: 2026-07-25 10:15 UTC

Frequent QSO partners observed at SO8OO

Stations JH3CUL worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJH3CULPartnerPartner SNRMsgs
07-25 11:49 10m -10 / - DN9CA - / -11 2 ✓ Confirmed
07-25 11:43 10m +12 / - DO1ID - / - 2 Partial
07-24 14:46 10m -2 / - DO1ID - / - 2 Partial
06-16 13:04 20m - / -14 VA3GRC -11 / - 3 ✓ Confirmed
06-16 12:58 20m - / - K4MPM -14 / - 2 ✓ Confirmed
06-11 01:43 20m +4 / - R3LDK - / -3 2 ✓ Confirmed
06-09 13:51 10m -3 / - 7Z1GC - / -7 2 ✓ Confirmed
06-08 02:13 20m -8 / - RA3LBK - / -3 2 ✓ Confirmed
06-03 13:52 20m - / - <...> 0 / - 2 Partial
06-03 13:48 20m - / -22 KC9IVQ -14 / - 2 ✓ Confirmed
06-03 13:44 20m - / -16 WA6RWI -20 / - 2 Partial
06-03 13:42 20m - / -22 K6YLG -20 / - 2 ✓ Confirmed
06-03 12:46 20m -18 / - UA3QQG - / -16 6 Partial
05-29 13:10 20m - / -21 W3US -15 / - 2 ✓ Confirmed
05-29 13:07 20m - / - KF0ARQ -14 / - 4 Partial
05-29 13:06 20m - / - K9HEI -16 / - 2 Partial
05-29 13:03 20m - / - KE7WVV -12 / - 2 Partial
05-29 10:50 20m -4 / - K4RUM - / +5 2 ✓ Confirmed
05-29 09:59 10m -8 / - 7Q9PTP - / +2 2 ✓ Confirmed
05-29 00:48 20m -3 / - HZ1TT - / -12 3 ✓ Confirmed
05-27 12:19 20m - / -12 WB0IWG -20 / - 2 ✓ Confirmed
05-22 13:53 20m - / - E70SZ +5 / - 4 Partial
05-22 13:52 20m - / -25 UT5MD +2 / - 3 ✓ Confirmed
05-22 13:49 20m +15 / - EU4U 0 / -9 2 Partial
05-22 13:41 20m - / - EX8ABR/P -7 / - 7 Partial
05-22 13:31 20m -9 / - HZ1OL -6 / +2 3 Partial
05-22 13:22 20m +2 / - OH3MB - / - 2 ✓ Confirmed
05-22 13:18 20m - / -21 OH3MB -7 / - 3 Partial
05-17 11:30 20m -18 / - R9FFT - / - 2 Partial
05-11 23:23 20m - / - A92AE -16 / - 4 Partial
05-11 23:19 20m - / -14 TB7HBY -5 / - 3 ✓ Confirmed
05-11 23:17 20m - / -9 DK2LG -2 / - 3 ✓ Confirmed

Station Log

10m 
UTC    dB  Freq  Message
135215  -3 1568  JH3CUL 7Z1GC RR73
143100 -20 2198  JH3CUL 7Z1CB RR73
144645  -4  452  JH3CUL DO1ID JO41 (x2)
150600  -9 2632  JH3CUL F4LZZ JN09 (x2)
114045 -11 1344  JH3CUL DN9MNE JN58
114315  +9  454  JH3CUL DO1ID JO41 (x2)
114445  -5 1093  JH3CUL DL1IP -17
114900 -11 1653  JH3CUL DN9CA -11 (x2)
120045 -10 2195  JH3CUL PD2JAM RR73
120630 -10 3085  JH3CUL DL8MBN JN58
121545 -13  769  JH3CUL OZ5VO RR73
20m 
UTC    dB  Freq  Message
135315  -1  713  <...> JH3CUL PM74
135330 -12  640  JH3CUL OY/OZ9GA +01
135600 -15 2397  JH3CUL F4GHN RR73
021345  -7 2466  JH3CUL RA3LBK -03 (x2)
013445 -20 2009  JH3CUL <...> -06
014300  +0  475  JH3CUL R3LDK -03 (x2)
125845 -14 2565  K4MPM JH3CUL PM74 (x2)
130445 -10 2565  VA3GRC JH3CUL PM74 (x3)
030330 -13 1239  JH3CUL RZ4AZ LN28
022200 -17 1276  JH3CUL RA3RDN RR73

SNR History by Band