JK3HFN — FT8 station from Japan

Japan Grid: JN19

Amateur radio station JK3HFN operating from Japan (grid square JN19). 48 FT8 spots received at SO8OO WebSDR, 4 CQ calls, active on 40m, 20m, 10m, over 15 days, best SNR +15 dB. Heard between 2026-04-26 and 2026-07-23.

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

Overview

48
Total spots
4
CQ calls
15
Days active
-3 dB
Avg SNR

Bands

20m 40m 10m
First seen: 2026-04-26
Last seen: 2026-07-23 13:28 UTC

Frequent QSO partners observed at SO8OO

Stations JK3HFN worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandJK3HFNPartnerPartner SNRMsgs
07-23 15:28 20m -4 / - F4BYA - / - 2 Partial
07-10 21:31 20m -10 / - EA1JVG - / - 2 Partial
06-10 22:23 20m -6 / - F5RRS - / - 6 Partial
06-08 20:20 20m +12 / - IQ4JO -12 / -9 4 ✓ Verified
05-29 12:59 20m +8 / - R5AV - / -10 2 ✓ Confirmed
05-24 21:57 20m +14 / - SV1AIN - / - 2 Partial
05-23 21:32 20m -13 / - HA9PP -13 / -2 2 ✓ Verified
05-20 13:56 20m -1 / - ON6AA - / -22 3 ✓ Confirmed
05-19 13:21 20m +8 / - R7SF - / -20 4 Partial
05-19 12:26 10m -8 / - A41ZZ - / -20 2 Partial
05-12 11:27 10m -12 / - YD1EQN - / -15 2 Partial
05-04 21:10 40m -2 / - UR6QA - / - 2 Partial
05-04 20:32 40m -4 / - UR6QA - / - 4 Partial

Station Log

20m 
UTC    dB  Freq  Message
202100 +14 2881  JK3HFN IQ4JO R-09
202115 -12 2785  IQ4JO JK3HFN RR73
202130 +11 2881  JK3HFN IQ4JO 73
222300  -8 1678  JK3HFN F5RRS JN36 (x6)
154600  -9 2247  JK3HFN IZ3VCN JN66
213100 -12  455  JK3HFN EA1JVG IN70 (x2)
140700 -15 2436  JK3HFN SP8AJK KO10
152800  -4 2912  JK3HFN F4BYA JN19 (x2)
10m 
UTC    dB  Freq  Message
112730  -9 1459  JK3HFN YD1EQN -15 (x2)
122600  -8  925  JK3HFN A41ZZ -20 (x2)
40m 
UTC    dB  Freq  Message
203230  -4 2133  JK3HFN UR6QA KN77 (x6)

SNR History by Band