Midland Radio CB1 CB TRANSCEIVER User Manual

Midland Radio Corporation CB TRANSCEIVER Users Manual

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Contents

1. Users Manual
2. Part 95 Statement

Users Manual

1www.midlandradio.comCB-140 Channel CB radio with RF GainOwner’s Manualwww.midlandradio.com

2www.midlandradio.comWelcome to the World of Midland Electronics �� 3How to install your Midland mobile CB �� 3Installation and Operating Accessories �� 4Where to Locate your CB Transceiver �� 4Mechanical Mounting �� 4Power Wiring (negative ground only) �� 5Installation of Microphone Hanger �� 5Antenna: Selection ��5Installation �� 6Tuning �� 6Range �� 6Noise �� 6Front Panel Controls �� 8Back Panel �� 8Transceiver Operation �� 9Technical Specications �� 10Service ��11Index

3www.midlandradio.comWelcome to the World of Midland ElectronicsCongratulations on your purchase of a state-of-the-art mobile CB radio� In the years ahead, you can expect to realize time and again why Midland holds the front running position among CB users everywhere� You will come to know that Midland power is more than just a slogan, but the heading of long list of benets� As your Midland CB experience unfolds and grows, we hope you will remember that CB is only one kind of electronic excellence available under the Midland name�Your 40 channel CB represents the state of the art in high tech engineering� The unit incorporates microprocessor controlled PLL circuitry for precise tuning�How to Install your Midland Mobile CBThis transceiver may be installed in any 12-volt negative ground-system car or truck� Most current U�S� and foreign vehicles use a negative system, but some older models and some newer large trucks may have a positive ground�Check the requirements for your vehicle before you begin installation�Generally, you have a negative-ground system if the minus ( - ) battery terminal is connected to the motor block� Contact your dealer in the event you are unable to determine your vehicle’s polarity system�

4www.midlandradio.comInstallation and Operating Accessories:1� Easy removal mounting bracket system�2� Microphone bracket system�3� All main-unit and microphone mounting hardware needed for normal installation�4� Plug-in microphone with coil cord�5� FCC part 95, Subpart D�6� Owner’s Manual�Where to Locate your CB Transceiver:Your new Midland CB is designed to be installed under the dash or vertically on a console of your vehicle� Safety and convenience are the primary considerations in deciding exactly where to locate your radio�Caution: Be sure that the unit is located so that it does not interfere with the driver, supplemental restraint systems (air bags) or impair access to any controls� Connecting cables must be routed and secured in such a manner as not to interfere with the operation of the brake, accelerator or other controls� Interference from either the unit or connecting cables may contribute to the loss of control of the vehicle�Mechanical Mounting:1� Heeding the caution, use the mounting bracket as a template for marking the location of screw holes under the dash� Use an awl, nail or other sharp pointed object to mark the hole locations�2� Drill a 1/8” hole for each screw hole in the mounting bracket� Attach the bracket to the dash with the Phillips head sheet metal screws provided�Extreme care should be exercised when drilling into the dash to avoid damage to under-dash electronic ignition, cruise control, instrument and / or accessory wiring�3� Position the main unit between the bracket arms in line with the retention knobs� Set the angle for optimum operating, comfort and accessibility�4� Tighten the retention knobs�

5www.midlandradio.comPower Wiring (negative ground only):1� If you have not determined whether your vehicle has a negative or positive ground, do so now� Then disconnect the negative lead from the battery to prevent short cir-cuits that can occur during wiring� Do not connect this transceiver to positive ground electrical systems�2� With negative groundA� Connect the positive (RED WIRE) the one with in-line fuse holder to either the (a) fuse block, (b) cigarette lighter, or (c) directly to the positive post on your battery� Usually, the fuse block is the most convenient connecting point� It is also possible to connect to the Accessory terminal on the fuse block or ignition switch, so that your CB automatically goes off when the ignition goes off�B� Tightly connect the ground (BLACK WIRE) directly to the vehicle’s metal frame� A good direct metal-to-metal ground is essential for optimum performance� Installations using the cigarette lighter socket for power require an extra ground wire from the radio chassis to the vehicle if the radio is not fastened to a grounded part of the vehicle�Installation of Microphone Hanger:Mounting holes are provided on the microphone hanger bracket� The bracket can be attached to the vehicle dash, the holes provided on the left side of the radio, or other convenient location�Antenna:You can choose from two types of mobile CB antennas: full-length whip and loaded whip - and a variety of mounts (depending on where you locate your antenna)� The dealer who sold you your Midland CB can advise which type is best for you�*Where you locate your antenna does make a difference.*Some general rules for antenna location that can aid CB performance:1� Put your mount as high on the vehicle as possible� The higher the proportion of antenna length that is above the roof, the better�2� If possible, mount the antenna in the center of whatever surface you choose�3� Keep antenna cables away from noise sources, such as the ignition system, gauges, etc�4� Make sure you have a solid metal-to-metal ground�5� Exercise care to prevent cable damage�Essentially, you have ve location choices: the roof, gutter, rear deck, front cowl or rear bumper� Where you decide to locate your antenna will determine the type of antenna you install� Consult your Midland CB dealer for advice and guidance, and measure your needs against the attributes of the various Midland antenna models they carry�

6www.midlandradio.comAntenna Installation:Follow the manufacturer’s installation instructions carefully�Warning: Never operate your CB radio without attaching an antenna or with a broken antenna cable� This will result in damage to transmitter circuitry�Safety notice: The antenna used for this radio must be installed to provide a separation distance of at least 8 in� (20cm) from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter�Tuning Your Antenna:Some antennas are factory tuned� However, performance can usually be improved by slightly lengthening or shortening the antenna using a Standing Wave Radio (SWR) meter� For the exact procedures to be used, refer to the antenna manufacturer’s installation manual�You can buy an SWR meter separately or have your antenna checked by your Midland CB Dealer’s service department�Factors affecting CB range:Essentially, they are the same inuences that optimize or limit AM and FM broadcast signals�Terrain: Hills, valleys and buildings naturally interrupt and shorten CB signals� In short, anything that is between you and the person you want to talk to can shorten your CB range� You can expect to maintain maximum transmitting/receiving performance in at, open country�Weather: You can expect that CB range will be reduced – perhaps drastically – in times of atmospheric disturbance, such as in a thunderstorm or heavy snow� Sunspots too are known to adversely affect CB performance�Noise:A common source of excessive noise is the ignition system� In many vehicles today the electric fuel pump is another possible source of noise� If you suspect this is true, turn off the ignition� With the CB in receive mode if the noise is no longer present then this is the source of the noise� In some cases the noise can be reduced or eliminated by making sure the CB radio chassis is grounded� This is in addition to the power cord� In extreme cases, additional grounding of components may be necessary�

7www.midlandradio.comOperating Controls:Microphone Connector: Plug in the supplied microphone to this connector� Received signals will not be heard without the microphone�ON/OFF Volume Knob: In the off position your transceiver power is off� Turn this control clockwise to switch on the unit and adjust the volume�Channel Buttons: This easy-to-operate control allows changing of CB channels, either up or down� Squelch Control: Adjust this control until background noise just disappears� If the control is adjusted too far clockwise it may cause muting of weaker signals�Channel Indicator: The LED displays the channel number�TX LED: Indicator shows the unit is transmitting�PA/CB Switch: When in PA mode, it causes your voice to operate the optional external PA speaker� In CB mode, the microphone operates the transmitter�Channel 9/Normal Switch: Allows you listen to emergency channel 9�CB/PASwitchNormal / CH9SwitchTXIndicatorDigitalChannelIndicatorChannelSelect ButtonsLockingMicConnectorRF GainKnobSquelchKnobVolumeKnob

8www.midlandradio.comBack Panel:Antenna Connector: Connect a standard 50-ohm CB antenna to this connector�External Speaker Jack: When a speaker is connected to this jack, the internal speaker is by-passed� All received signals will be heard through the external speaker� The speaker connected to the “EXT” jack should be rated at 8 ohms and 5 watts�PA Jack: An optional PA speaker may be attached to your transceiver through the PA output jack on the back panel� This allows you to communicate with pedestrians or other vehicles through your CB microphone� The speaker connected to the “PA” jack should be rated at 8 ohms and 5 watts�DC 13�8V POWER Cord: Connects to power cord with in line 2 amp fuse�How To Operate your Transceiver:You should become familiar with the controls and complete the preceding installation instructions before attempting to operate your CB�1� Rotate the on/off volume control clockwise to turn the unit on�2� Adjust the squelch control fully counter-clockwise so noise is heard�3� Adjust the volume for a normal listening level�4� Rotate the squelch control until the noise just disappears� 5� Select the desired channel� 6� To transmit, press the PTT bar on the side of the microphone� Hold the microphone 2 to 3 inches from your mouth and speak in a normal voice�7� To receive, simply release the PTT bar�Warning: Do not attempt to make any internal adjustments� Internal adjustments and/or modications can lead to illegal operation as dened by the FCC rules and regulations, Part 95� They must be made only by qualied technical personnel� Illegal operation can lead to serious consequences�AntennaConnectorPAJack EXTSpeakerJack13�8VDCPowerCord

9www.midlandradio.comTechnical Specications:GeneralFrequency Range �� 26�965-27�405 MHzChannels �� 40Modulation Type ��AMAntenna Impedance ��50 ΩLoudspeaker ��8 ΩMicrophone�� 1000 Ω ElectretPower Supply ��13�8 VDC negative groundSize �� 4-7/8” (W) x 6-1/2” (D) x 1-1/2” (H)Unit Weight ��1 lb� 10 ozReceiver (CB, 26�965-27�405 MHz,)Sensitivity at 10dB S/N ��0�7 µVSelectivity �� 45dB + 10 kHzSquelch Range ��0�5 µV - 500 µVAudio Output Power ��3�0 W @ 8 Ω (10% distortion)Distortion at 1000 mV �� 3%Audio Frequency response ��400-2400 HzIntermediate Frequency ��1st: 10�695 MHz 2nd: 455 kHzSpurious Response ��> 45dBTransmitterRF Output Power ��4�0 WFrequency Tolerance ��0�005%Harmonic Suppression ��> 60 dBModulation ��AM 90% (± 5%)

10www.midlandradio.comService:If it ever becomes necessary to return your unit for service:Pack the unit in its original box and packing, improper packing may result in damage during shipment� Be sure to remove the microphone from the radio before packing�Include a full description of any problems� Include a daytime telephone number in the event we need more information�You do not need to return accessory items (brackets, screws, power cord, antenna, etc�) unless they may be directly related to the problem�Include a photocopy of the bill of sale or other proof of purchase showing the date of sale (credit card statements are not acceptable)� This information must be included before warranty service can be considered�A at rate charge of $45 will apply to radios not covered by the Warranty� Master Card, Visa, Cashier’s Check or Money Order will be accepted for payment only� Personal checks will not be accepted and will delay the repair of your radio until we receive payment by approved methods�Midland Radio Corporation Hereby certies that this unit has been designed, manufactured, FCC type accepted and certied in accordance with Part 95 and Part 15, Subpart C of the current FCC rules and regulations as of the date of manufacture�

11www.midlandradio.comLimited Warranty:Midland Radio Corporation will repair or replace, at its option without charge this model CB1 Citizens Band transceiver that fails due to a defect in material or workmanship within Three years following the initial consumer purchase�This warranty does not include any accessories, which may be a part of or included with the warranted product, or the cost of labor for removal or re-installation of the product in a vehicle or other mounting� Performance of any obligation under this warranty may be obtained by returning the warranted product, freight prepaid, along with proof of purchase date, to Midland Radio Corporation , Warranty Service Department, 5900 Parretta Drive, Kansas City, Missouri 64120, or to any “Midland Authorized Warranty Service Station,” or to the place of purchase (if a participating dealer)� This warranty gives you specic legal rights, and you may also have other rights which vary from state to state�Note: The above warranty applies only to merchandise purchased in the United States of America or any of the territories or possessions thereof, or from a U�S� Military ex-change� For warranty coverage on merchandise purchased elsewhere, consult the supplemental warranty information included with this product or ask your dealer�MIDLAND RADIO CORPORATION5900 Parretta DriveKansas City, MO 64120Phone 816-241-8500E-mail: mail@midlandradio�comwww�midlandradio�comPrinted in Thailand

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