BI4JM — FT8 station from China

China Grid: JO02

Amateur radio station BI4JM operating from China (grid square JO02). 421 FT8 spots received at SO8OO WebSDR, 26 CQ calls, active on 40m, 20m, 10m, over 21 days, best SNR +31 dB. Heard between 2026-04-21 and 2026-06-07.

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

Overview

421
Total spots
26
CQ calls
21
Days active
-4 dB
Avg SNR

Bands

20m 40m 10m
First seen: 2026-04-21
Last seen: 2026-06-07 20:13 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
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
05-10 09:01 20m -3 / - ON6AA - / - 6 Partial
05-08 21:19 20m - / - A61OK -18 / - 2 Partial

Station Log

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
091400 -15 2335  BI4JM SP9KR R-10
082715 -20 1413  BI4JM ZS6GAV RR73
131545  -8 1652  BI4JM F1PSX JN08 (x10)
063815 -16 1190  BI4JM FR5ZE -06 (x2)
40m 
UTC    dB  Freq  Message
213330  -7 2443  BI4JM R2EG KO82
213330  -1 1688  BI4JM EA3XR JN11 (x2)
213430  -4 2443  BI4JM SM3ULU JP81
213430  -4 1688  BI4JM EA3XR R-22
213530  +3 2443  BI4JM SM3ULU JP81
215330 -12 2466  BI4JM R5AV RR73
211615 +10  767  BI4JM EA8UP -24 (x8)

SNR History by Band