* Mode Switch
There are four display modes for the user to choose, including Frequency Mode, Signal Mode, Signal+Frequency Mode and Signal+Name Mode.
* Channel Scan
Channel scan helps you listen to communication activities on other channels by continually scanning channels for activities. Achievable functions include add/delete preset channels.
* High /Low Power Switchable
The user can choose to operate with high or low transmitting power according to the specific situation.
* Wide/Narrow Bands Switchable
This function enables the user to set the bandwidth for 25KHz wide bandwidth or 12.5KHz narrow bandwidth. “W” displayed means wide bandwidth, and “N” means narrow bandwidth.
* Reverse Frequency
With this function the user can reverse the transmitter frequency and receiver frequency. The user can also reverse the transmitter CTCSS and receiver CTCSS. The screen will display “R” when this function is activated.
* 9 Squelch Levels Selectable
It helps to minimize interferences from unwanted weak signals and gives you a better audio experience.
* VOX
With a paired microphone, the user can activate the transmitting through voice only and no longer needs to press the PTT button.
* Time-out Timer (TOT)
By limiting each transmission time, Time-out Timer prevents channels from being occupied too long time and thus improves channel efficiency.
* Local Alarm
If “Local Emergency Alarm” is enabled, an alarm tone will go off. Through the programming software, the user can set button 1 or 2 with “Alarm”, and press the preset button to set off the alarm.
* Backlight
This function helps the user to read the screen with more ease.
* Lighting/ Flashlight
The built-in flashlight drives darkness away when the user is operating in a dark environment.
* CTCSS/CDCSS and STE
This can effectively prevent interferences from other conversations at the same frequency.
* Energy Saving
Your radio operation time can be further extended with battery save function. BF-511UV automatically goes into battery save mode when there are no communication activities.
* Busy Channel Lockout (BCL)
This keeps the channel free from interferences.
