Specifications

The (Chinese) Radio Documentation Project
50 Menu definitions
Values Notes Default value
1 - 4 3
OFF
4 VOX - Voice Operated TX
Adjusts the sensitivity of the VOX feature, if enabled.
Values Notes Default value
1 - 10 OFF
OFF
The lower the setting, the louder your voice have to be in order to engage the transmitter.
5 WN - Wideband / Narrowband
Sets maximum band deviation.
Key Values Notes Default value
0 WIDE 5kHz WIDE
1 NARR 2.5kHz
In the USA, FCC part 90 radios are mandated to switch over to Narrowband communi-
cation by January 1st 2013. Meaning all commercial users. This does not affect Amateur
Radio operators.
6 ABR - Display Illumination Time
Time-out for the LCD back-light.
Values (seconds) Notes Default value
1 - 5 5
OFF
7 TDR - Dual Watch
When enabled it allows you to monitor two frequencies simultaneously.
Key Values Notes Default value
1 ON OFF
0 OFF
ON
(≤ BFB291)
OFF[0] | [1] - [5]
(≥ BFB293)
OFF[0] | [1] - [10]