BI4JM — FT8 station from China

China Grid: JN59

Amateur radio station BI4JM operating from China (grid square JN59). 398 FT8 spots received at SO8OO WebSDR, 25 CQ calls, active on 40m, 20m, 10m, over 21 days, best SNR +31 dB. Heard between 2026-04-23 and 2026-07-20.

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

Overview

398
Total spots
25
CQ calls
21
Days active
-4 dB
Avg SNR

Bands

40m 20m 10m
First seen: 2026-04-23
Last seen: 2026-07-20 18:40 UTC

Frequent QSO partners observed at SO8OO

Stations BI4JM worked most often, as logged from our receiver:

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

TimeBandBI4JMPartnerPartner SNRMsgs
07-20 20:39 40m -11 / - DL7MDX - / - 3 Partial
07-20 20:36 40m -4 / - SP2Y - / -15 6 ✓ Confirmed
06-07 22:21 20m - / - Z62NS -7 / - 2 Partial
06-07 22:12 20m -15 / - G8CRB - / - 3 Partial
06-07 22:10 20m - / - Z62NS -9 / - 4 Partial
06-07 22:02 20m -6 / - EA1IOK - / - 2 Partial
06-07 21:59 20m +8 / -10 5Z4VJ -14 / -6 7 ✓ Complete
06-07 06:38 10m -14 / - FR5ZE - / -6 2 ✓ Confirmed
05-24 19:26 20m +4 / - PD0JOY - / -19 8 ✓ Confirmed
05-24 19:24 20m -11 / - RA6AR - / - 3 Partial
05-24 19:23 20m -11 / - RA6OF - / -17 2 ✓ Confirmed
05-24 19:23 20m -8 / - JA0LFV - / +2 5 ✓ Confirmed
05-23 21:27 20m +19 / - F4JDM - / -12 3 Partial
05-23 21:16 40m +9 / - EA8UP - / -24 8 Partial
05-23 21:15 20m 0 / - M0XAN - / - 6 Partial
05-22 17:09 20m -6 / - RG5A - / -14 2 Partial
05-22 16:14 20m -12 / - IK4TVP - / -18 5 Partial
05-22 16:10 20m -20 / - RL3T - / - 3 Partial
05-22 16:07 20m -10 / - SP0DZ - / -13 6 Partial
05-22 16:06 20m -2 / - OH3OJ - / -18 2 Partial
05-22 16:02 20m -10 / - R7OV - / - 4 Partial
05-22 15:43 20m -18 / - R6DZR - / -23 4 Partial
05-22 13:15 10m -6 / - F1PSX - / - 10 Partial
05-20 22:10 20m 0 / - CR7BRV - / - 3 Partial
05-20 21:24 20m -6 / - IQ4JO - / -19 2 ✓ Confirmed
05-18 15:31 20m -3 / - F1ODM - / -23 8 Partial
05-18 15:28 20m +8 / - RA4ABH - / -14 2 Partial
05-18 14:38 20m +10 / - RW9WT - / -20 2 ✓ Confirmed
05-18 14:32 20m -10 / - MM0HVU - / -16 2 Partial
05-18 13:47 20m -7 / - R7SF - / -18 4 Partial
05-14 23:04 20m - / -20 DL1EDR -13 / - 2 Partial
05-14 22:53 20m -6 / - JA1XIA - / - 2 Partial
05-14 22:46 20m +5 / - EA7GXD -14 / -10 4 ✓ Verified
05-14 22:12 20m -17 / - GI5KSO - / - 4 Partial
05-14 22:11 20m +3 / - SV5BYP - / -14 3 ✓ Confirmed
05-12 22:01 20m +10 / - 9H4JX - / -23 2 Partial
05-12 14:07 20m -10 / - RA9MI - / -13 2 ✓ Confirmed
05-12 11:41 20m -16 / - UA9LCY - / -15 3 Partial
05-12 11:07 20m +30 / - ON6AA - / -26 3 ✓ Confirmed
05-11 21:37 20m +2 / - EA2DP - / - 4 Partial
05-11 21:31 20m +2 / - EC3A - / -14 2 Partial
05-10 22:08 20m -11 / - EA7FDM - / -15 14 Partial
05-10 22:04 20m -16 / - EA3EQS - / -7 2 Partial
05-10 21:57 20m -8 / - JY5IB - / -14 2 ✓ Confirmed
05-10 21:34 40m 0 / - SM3ULU - / - 2 Partial
05-10 21:33 40m -3 / - EA3XR - / -22 4 Partial
05-10 21:32 40m -10 / - R2EG - / - 4 Partial
05-10 21:27 40m +10 / - DL4RAQ - / -15 2 Partial
05-10 09:48 20m -2 / - DL2RH - / - 2 Partial
05-10 09:32 20m +8 / - UA4FKT - / - 4 Partial

Station Log

40m 
UTC    dB  Freq  Message
211715  +5  767  BI4JM EA8UP -24 (x6)
203615  -4 1210  BI4JM SP2Y JO93 (x6)
203915 -12 1720  BI4JM DL7MDX JN59 (x3)
20m 
UTC    dB  Freq  Message
220130 -14 1791  5Z4VJ BI4JM 73
220200 -16 1791  CQ BI4JM OM97
220215  -6  559  BI4JM EA1IOK IN62
220245  -7 1081  BI4JM DL8ZAJ JO40
220245  -6  560  BI4JM EA1IOK IN62
220745 -10 1791  Z62NS BI4JM OM97 (x5)
221230 -15 1922  BI4JM G8CRB JO02 (x3)
222115  -8 1792  Z62NS BI4JM OM97 (x2)
10m 
UTC    dB  Freq  Message
082715 -20 1413  BI4JM ZS6GAV RR73
131545  -8 1652  BI4JM F1PSX JN08 (x10)
063815 -16 1190  BI4JM FR5ZE -06 (x2)

SNR History by Band