Indicators and Microphone
Operating to Receive and Transmit
Your Mobile Radio
Indicators | • | |
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4Analog Meter |
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Your Mobile Radio
Operating to Receive
To begin operating your radio:
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The meter needle swings proportionally to the strength of the incoming signal or RF output power in receive or transmit modes.
When used to tune the antenna or monitor the quality of the coaxial cable and
RF electrical connections, the needle swings proportionally to the ratio of standing wave ratio and RF output. If there is any degradation in these, due to humidity, salt, spray, vibration or corrosion, the SWR meter reading will rise, thereby indicating that a problem exists.
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This indicator glows green when in receive mode and red when in transmit mode.
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This indicator glows red whenever the standing wave ratio is greater than 3 to 1.
Microphone
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1.Be sure the power source, microphone and antenna are properly connected.
2.Turn the unit on by turning the volume knob clockwise and set the volume for a comfortable listening level.
3.Set the PA / AM / FM switch to the desired AM or FM.
4.Set the RF gain control fully clockwise for maximum RF gain.
5.Listen to the background noise from the speaker, then turn the squelch ring slowly clockwise until the noise just disappears (no signal should be present). Leave the control at this setting. The squelch is now properly adjusted. The receiver will remain quiet until a signal is actually received. Do not advance the control too far, or some of the weaker signals will not be heard.
6.Select the desired frequency with the band and frequency selector knobs.
7.Adjust other controls as desired.
The receive and transmit modes are controlled by the
on the microphone. Press the switch to transmit, release it to receive. When transmitting, hold the microphone two inches from the mouth and speak clearly in a normal voice.
Operating to Transmit
To transmit a signal:
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To substitute for the supplied
1.Select the desired frequency for transmission if different from the one chosen to receive.
2.Set the microphone gain knob fully clockwise.
3.If the frequency is clear, depress the
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14 English | Nothing comes close to a Cobra® 15 | ||