JM3UGA — FT8 station from Japan

Japan Grid: JN45

Amateur radio station JM3UGA operating from Japan (grid square JN45). 43 FT8 spots received at SO8OO WebSDR, 6 CQ calls, active on 40m, 20m, 10m, over 5 days, best SNR +10 dB. Heard between 2026-05-09 and 2026-07-25.

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

Overview

43
Total spots
6
CQ calls
5
Days active
-4 dB
Avg SNR

Bands

20m 40m 10m
First seen: 2026-05-09
Last seen: 2026-07-25 08:47 UTC

Frequent QSO partners observed at SO8OO

Stations JM3UGA worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJM3UGAPartnerPartner SNRMsgs
07-25 10:44 10m -17 / - IW2HUS - / - 6 Partial
07-25 10:43 10m -4 / - PI4DX - / -10 2 ✓ Confirmed
06-27 10:47 10m -22 / - RV3QI - / - 2 Partial
05-23 21:36 20m - / -4 UW8SM -4 / - 2 ✓ Confirmed
05-23 21:08 40m +7 / - EA8UP - / -23 7 Partial
05-16 21:41 20m +6 / - EA1AJT - / -16 6 ✓ Confirmed
05-09 21:44 20m +2 / -13 DL1BBO -13 / - 2 Partial
05-09 21:44 20m +3 / - EA1IOK -13 / -9 4 ✓ Verified
05-09 11:56 20m -4 / - DK3JW - / - 2 Partial
05-09 11:53 20m - / -4 AK8A -13 / - 2 ✓ Confirmed
05-09 11:52 20m -4 / -18 UA1ANR -12 / -3 4 ✓ Complete

Station Log

10m 
UTC    dB  Freq  Message
082630 -17 2095  JM3UGA R6DZL LN04
104730 -20 2070  JM3UGA RV3QI KO91 (x2)
072430 -11 1714  JM3UGA IZ4OSH JN54
104315  -5  985  JM3UGA PI4DX -10 (x2)
104415 -17 1467  JM3UGA IW2HUS JN45 (x6)
20m 
UTC    dB  Freq  Message
214745 -13 2337  VR2VAZ JM3UGA RR73
214130  -1 2256  JM3UGA EA1AJT IN72 (x6)
214730 -16 1186  JM3UGA LU8VLE R-13
213315  -2 2125  CQ DX JM3UGA PM74 (x2)
213445  -1 2125  EU6AV JM3UGA RR73
213515  +1 2125  CQ DX JM3UGA PM74 (x2)
213645  -4 2126  UW8SM JM3UGA -04 (x2)
40m 
UTC    dB  Freq  Message
210845  +7  767  JM3UGA EA8UP -23 (x7)

SNR History by Band