BI4UMB — FT8 station from China

China Grid: LO84

Amateur radio station BI4UMB operating from China (grid square LO84). 24 FT8 spots received at SO8OO WebSDR, active on 20m, over 7 days, best SNR +14 dB. Heard between 2026-05-05 and 2026-06-05.

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

Overview

Total spots

CQ calls

Days active

-4 dB

Avg SNR

Bands

20m

First seen: 2026-05-05
Last seen: 2026-06-05 12:04 UTC

Frequent QSO partners observed at SO8OO

Stations BI4UMB worked most often, as logged from our receiver:

RA9CNC · Asiatic Russia RV9WJP · Asiatic Russia R9MW · Asiatic Russia R4PEZ · European Russia RK4HP · European Russia YB6XFI · Indonesia

Activity Heatmap

Location

QSO Logbook (as observed from SO8OO)

Format: our rx / partner reports

Time	Band	BI4UMB	Partner	Partner SNR	Msgs
06-05 14:03	20m	-1 / -	RY9W	- / -	3	Partial
06-05 13:56	20m	-9 / -	RV9WJP	- / -	3	✓ Confirmed
06-05 12:06	20m	-8 / -	RV9WJP	- / -	4	Partial
05-29 15:08	20m	-4 / -	YB6XFI	- / -14	2	✓ Confirmed
05-29 14:54	20m	+14 / -	R4PEZ	- / -14	2	✓ Confirmed
05-29 14:48	20m	-14 / -	YB1KXV	- / -10	2	Partial
05-08 08:19	20m	-6 / -	ON6AA	- / -	2	Partial
05-05 12:43	20m	+7 / -	RA9CNC	- / -	2	✓ Confirmed

Station Log

20m

UTC    dB  Freq  Message
145445 +14 1613  BI4UMB R4PEZ RR73
150815  -5 1468  BI4UMB YB6XFI -14 (x2)
153545 -24 1467  BG4OOO BI4UMB R-26 (x2)
120645  -7  296  BI4UMB RV9WJP MP72 (x7)
140345  -6 1129  BI4UMB RY9W LO84 (x3)