The Leixen N8 reads your RF transmitted frequency from 1 to 1000 MHz.
Additionally, it can read and display your CTCSS tone and DCS code on the second line of the LCD.
It will even "confirm" an accurate frequency reading by transmitting a tone back to your radio.
There is a 60 second power-off function to conserve battery life.
Has removable SMA antenna. Requires 3 AAA batteries (not included).