Operating Your Radio
Squelch Control
Speaker/Mic Port
Talk Button
Getting Started
Squelch Control
Squelch is controlled by turning the lower rotary concentric knob located directly below the On/Off/Volume control.
With the power On, turn the knob counterclockwise until you hear a hissing sound, then turn the knob clockwise until the hissing stops. This will establish a “Baseline” squelch. By turning the knob further in a clockwise direction, you will filter weak and medium- strength signals. By turning the knob in a counterclockwise direction (further from your baseline setting), you will receive weaker signals. Squelch control filters weak signals and radio frequency (RF) noise so that you will clearly hear the signals you want.
NOTE
If the Squelch control is set so that you can hear a continuous hissing sound, the Memory Scan, Tri- Watch Scan, CTCSS Scan and DCS Scan functions will be blocked.
Radio Speaker and Microphone
The internal Radio Speaker and Microphone are located on the bottom front face of the radio below the lower control buttons.
An optional Speaker/Microphone port is located at the top of the radio between the antenna and the Power/Volume/ Squelch control. Unthread the Speaker/Microphone port cover to access and install an optional speaker or microphone into this port.
Talk Button
Press and hold the Talk button to transmit messages. Release the Talk button to stop transmitting.
Operating Your Radio
Backlight/Key Lock Button
Key Locked
Buttons
Key Lock Icon
Getting Started
Backlight/Key Lock Button
The LCD will be illuminated by the backlight as long as any button is pressed and will remain On for 10 seconds after the button is released.
To Display the Backlight Momentarily:
Press the Backlight/Key Lock button. The backlight will remain On for 10 seconds. If the backlight is already On, another press of the Backlight/Key Lock button will turn it Off.
Key Lock
To prevent accidental changes to your settings, you can lock all of the following buttons:
■Channel Up Button
■Channel Down Button
■SCAN Button
■MEM/ESC Button
■WX/H-M-L Button
■16/9 Button
■TRI-WATCH Button
■BAND Button
■REW Button
■Call/Enter/Setup Button
To Lock or Unlock the Buttons:
Press and hold the Backlight/Key Lock button for two
(2)seconds. The Key Lock icon will appear or disappear in the LCD. When Key Lock is On, pressing any of the listed buttons on the front of the radio will result in a three (3) beep error message.
Both the Backlight/Key Lock button and the Talk button are active — you can Receive (Rx) or Transmit (Tx) a message with Key Lock On, but you cannot change the channel.
40 English
Nothing Comes Close to a Cobra® 41