Midland 71-506-10D Operator's Manual page 6

3.2 Basic Operation
Note that controls and functions will vary with different control systems and with programming.
3.2.1 Switch On
Switch the 71-506-10D "ON" , the POWER indicator should illuminate.
3.2.2 Adjust the Volume Setting
Rotate the Volume Knob clockwise until the audio level from the speaker is suitable.
3.2.3 Adjust the Squelch Setting
Rotate the Squelch Knob clockwise (from the fully counter clockwise position) slowly until
the background noise can no longer be heard. It is wise to slightly rotate the knob further
in the clockwise direction so that variations in the background noise level do not "break"
the squelch setting and cause annoying noises to be heard from the speaker.
3.2.4 Select the Channel
Select the desired channel.
3.2.5 Receiving
You should now be able to hear any radio traffic that occurs on channel. It may be
necessary to further slightly adjust the Volume setting to suit your listening requirements.
3.2.6 Transmitting
Depending on the legal requirements in your country and the operating requirements
within your organization, it may be necessary to announce your Call Sign, and will
probably be necessary to announce the Call Sign of the party you are calling at the start
of your transmission.
Press the PTT switch before beginning to speak. When transmitting, it is necessary to
hold the microphone about 75mm (3") from your mouth and speak clearly into the grill of
the microphone.
71-506-10D FULL-DUPLEX MOBILE 6