Cobra Electronics MR HH400 EU owner manual Getting Started, Power On-Off, Volume, Squelch

Getting Started

Operating Your Radio

Getting Started

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Refer to the foldout on the front cover of this manual to identify the various controls and indicators on your radio.

Throughout this manual you will be instructed to press or to press and hold buttons on the radio. Press means a momentary press, then release; press and hold means to hold the button down.

Whenever you press any button except the Talk button on your radio, a brief tone (beep) will sound to confirm the button press. With all button presses, the appropriate icon will appear on the LCD and the backlight will turn On. The backlight will stay On for five seconds after the button is released.

At times you will hear two other sounds. Two beeps will sound to confirm your setting changes and three beeps will sound to notify you of an error.

Power On-Off

The On-Off Power/Volume knob on the top of the radio is held in the Off position by a click stop.

Operating Your Radio

On-Off Power/Volume Knob

Squelch Knob

Getting Started

Volume

The On-Off Power/Volume knob also controls the speaker Volume. The Volume adjustment applies only to what you hear from the speaker and does not affect the Volume of your outgoing messages, which is controlled by the circuitry of your radio.

To increase the volume:

1.Turn the On-Off Power/Volume knob clockwise.

To decrease the volume:

1.Turn the On-Off Power/Volume knob anticlockwise.

Squelch

Squelch control filters weak signals and radio frequency noise so that you can hear the signals you want more clearly.

Squelch Knob

On-Off Power/Volume Knob

On-Off Power/Volume Knob

To turn your radio On:

1.Turn the Squelch knob half-way anticlockwise (when viewed from above).

2.Turn the On-Off Power/Volume knob clockwise until you hear and feel a click.

When the radio is powered On, a brief tone will sound, the display backlight will turn On, and the display will show all icons for two seconds. All buttons will be inoperative during these two seconds.

After two seconds, the radio will return to the settings

in effect when it was last powered Off, the LCD will show the appropriate icons, and all controls will be operative. The radio will then be in Standby mode.

To turn your radio Off:

1.Turn the On-Off Power/Volume knob all the way anticlockwise until you hear and feel a click.

To squelch your radio:

1.With the Squelch knob turned fully anticlockwise, turn the On-Off Power/Volume knob clockwise until you hear a hissing (noise) sound.

2.Turn the Squelch knob clockwise until the hissing

sound stops. Turning the Squelch knob further clockwise will filter weak and medium strength signals until only the strongest signal can get through at its highest setting.

To receive weaker signals, turn the Squelch knob anticlockwise.

If the squelch is set so you can hear a continuous hissing sound, the scan and tri-watch functions will be blocked.

30 English

Nothing comes close to a Cobra® 31