Midland 248 User Manual
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Midland 248 User Manual

Midland 248 User Manual

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MIDLAND
248
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Downloaded from www.cbradio.nl

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Summary of Contents for Midland 248

  • Page 1 MIDLAND Picture by www.neuner.de Downloaded from www.cbradio.nl...

  • Page 2: Table Of Contents

    The PLL circuit achieves a new technique for generating all the required frequencies with fewer crystals. The result is much tighter frequency control and superior reliability. MIDLAND 248 is equipped with the “NOISE BLANKER” (noise reducer device) that reduces considerably the audio noises up to 95%, allowing a clear communication even...

  • Page 3: Function And Location Of The Controls

    FUNCTION AND LOCATION OF THE CONTROLS 10 13 11 14 Q.UP Q.DOWN SCAN 1. Channel selector 2. Microphone jack: Insert the mic connector into this jack. 3. Multifunction backlighted display. A. Channel selected number B. The received signal strength and the power of the transmitting signal C.
  • Page 4 trol clockwise to switch on the unit. Turn the knob clockwise a little more to set the audio level, until you get a comfortable reception. With ‘’PA-CB’’ selector set in ‘’PA’’ position, the knob controls the audio output level. 5. “Squelch” Control: for the maximum receiver sensitivity, the control must be regu- lated exactly where the receiver background noise disappears.

  • Page 5: Rear Panel

    REAR PANEL S-METER ANTENNA POWER 13,2 V DC 18. Antenna connector (SO239 connector type). 19. S. Meter jack: it allows an external “S. Meter” connection. 20. “PA” jack: by connecting with an external loudspeaker, you can use the unit as an audio-amplifier.

  • Page 6: Installation

    INSTALLATION Safety and convenience are the primary consideration for mounting any piece of mobile equipment. All controls must readily available to the operator without interfering with the movements necessary for safe operation of the veicle. Set the proper position in the car to install the transceiver using the supplied supporting bracket or eventually the slide bracket.

  • Page 7: How To Operate With Your Transceiver

    HOW TO OPERATE WITH YOUR TRANSCEIVER 1. Screw the microphone plug into the microphone jack. 2. Make sure your antenna is securely connected to the antenna connector. 3. Make sure the SQUELCH control is turned fully counterclockwise. 4. Turn on the unit and adjust the volume control. 5.

  • Page 8: Technical Specifications

    TECHNICAL SPECIFICATIONS GENERAL Channels ..............(see the frequency band chart) Frequency Range ..............26.565 - 27.99125 MHz Duty cycle (% on 1 hour) ..........TX 5% - RX 5% - Stand-by 90% Frequency Control .....................PLL Operating Temperature Range ..............-10°/+55° C DC input voltage ..................

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