Loading...
unideii
GRANT 40 Channel AM/SSB Mobile CB Radio
OWNERS MANUAL
riP
INTRODUCTION
UNIDEN CORPORATION OF AMERICA has combined superb workmanship and modern styling with the very latest state-of-art circuitry to bring you the GRANT Citizens Band Trasnceiver. It has been especially designed to give you maximum performance and reliability. Your GRANT is completely factory aligned and quality assurance tested.
To obtain the maximum benefit and pleasure from your GRANT, please read very carefully the contents of this manual before attempting to install or operate the transceiver.
WARNING
The Citizens Band (CB) Radio Service is under the jurisdiction of the Federal Communications Commission (F.C.C.). Any adjustments or alterations which would alter the performance of the transceiver's original F.C.C. Type Acceptance or which would change the frequency determining method are strictly prohibited. Replacement or substitution of Crystals, Transistors, 1C, Regulator Diodes or any other part of a unique nature, with parts other than those recommended by us, may cause violation of the technical regulations of Part 95 of the F.C.C. Rules or violation of Type Acceptance requirements of Part 2 of the Rules.
ELIMINATION OF LICENSING
The Federal Communications Commission (F.C.C.) has ruled that Citizens Band (CB) Radio Service operators no longer are required to obtain an F.C.C. license to operate their CB equipment. In doing so, the F.C.C. also decided to permit CB station operation without station identification.
Elimination of individual station licenses results in no lessening of the operating privileges or responsibilities of CB users. An operator of a CB radio station is still required to comply with the Communications Act and with the rules of CB Radio Service.
- 1 -
INSTALLATION
MOBILE STATION INSTALLATION
Plan the location of the transceiver and microphone bracket before starting the installation. Select a location that is convenient for opwration and does not interfere with the driver or passenger in the vehicle. The radio should be securely fastened to some solid face, using the mounting bracket and self-tapping screws which are provided,
MOBILE STATION ANTENNA
Since the maximum allowable power output of the transmitter is limited by the F.C.C., the antenna is a very important factor affecting transmission distance. It is for this reason that we strongly recommend that you install only a quality antenna in your new citizens band system. You have just purchased a superior transceiver. Don't diminish its performance by installing an inferior antenna.
Only a properly matched antenna system will allow maximum power transfer from the 50-ohm transmission line to the radiating element. Your UNIDEN dealer is qualified to assist you in the selection of the proper antenna to meet your applica tion requirements.
For automobile installation, the whip antenna may be used with good effect. The most efficient and practical installation is a full quarter wave whip antenna mounted on the rear deck or fender top midway between the rear window and bumper.
A short "loaded" whip antenna is more convenient to install on you automobile, although the efficiency is less than a full quarter wave whip antenna.
For marine installation, consult your dealer for information regarding an adequate grounding system and prevention of electrolysis between fittings the hull and water.
GROUND INFRMATION
Most newer U.S. and foreign made cars and small trucks use a negative ground system, while some older cars and some newer large trucks may use a positive ground system.
A negative ground system is generally identified by the (-) battery terminal being connected to the vehicle motor block, but if you cannot determine the polarity system of your vehicle, it is suggested that you consult your vehicle dealer for definite information.
POWER CORD CONNECTION: NEGATIVE GROUND SYSTEM
If you are operating on a negative ground system, connect the red DC power cord from the transceiver to the positive, or (-r), battery terminal or other convenient point and connect the black power lead to the chassis or vehicle frame, or (-) battery terminal.
- 2 -
POWER CORD CONNECTION: POSITIVE GROUND SYSTEM
If you are operating on a positive ground system, connect the black DC power cord from the transceiver to the negative, or {-), battery terminal or other convenient point, and connect the red power lead to the chassis or vehicle frame, or (+) battery terminal.
MOTE: With regard to the connection of the power cords, it may be possible or desirable to connect the (red lead for negative ground system) or (black lead for positive ground system) to the ignition switch accessory terminal so that the transceiver is automatically turned off when the ignition switch (key) is turned off. Alternately, the power lead may be connected to an available terminal on the fuse block or even to a point in the wiring harness. Care must be taken, however, to guard against a short circuit condition. When in doubt, please contact your vehicle dealer for specific information for your vehicle.
BASE STATION OPERATION
To operate the transceiver from your home or office, using regular house current as the power source, you will require a separate power supply capable of supplying 3 amps at a 13,8V DC output with a nominal input voltage of 12D volts AC, 50/60Hz. Simply connect the red (+) and black (-) leads of the transceiver to the correspond ing DC terminals of the power supply.
NOTE; Do not attempt to operate this transceiver by connecting directly to 117V AC, When an AC power supply is used with the transceiver for base station operation any Citizens Band beam, dipole, ground plane or vertical antenna may be used. A ground plane vertical antenna will provide the most uniform horizontal coverage.
- 3-
OPERATING PROCEDURE
TO RECEIVE:
The GRANT operates on 40 AM channels, 40 Upper Side Band channels and 40 Lower Side Band channels.
When you receive the SSB signal in the proper mode (USB or LSB), audio sound may be either too high pitched or low pitched, indicating that your receiver may not be tuned to the exact same frequency as the transmitter to which it is listening. The GRANT is equipped with a Clarifier. By tuning the Clarifier, you can slightly change the frequency of the receiver so you get a normal tone.
1. Place the PA switch in CB function — by turning SQUELCH control clockwise, past click.
2.Turn the set on by turning the VOLUME CONTROL clockwise, past click, NOTE : Microphone must be plugged in for receiver to operate.
3.Set the VOLUME CONTROL to a comfortable level.
4.Set the Mode Selector Switch to the desired mode.
5.Listen to the background noise from the speaker. Turn the SQUELCH CQNTROL slowly clockwise, until the noise just disappears. The Squelch is now properly adjusted. The receiver will remain quiet until a signal is received. Do not advance the control too far, or some of the weaker signals will not be heard.
6.Set the Channel Selector to the desired channel,
7.Adjust the CLARIFIER to clearly receive SSB or AM signals.
TO TRANSMIT;
CAUTION
The transceiver Voltage Standing Wave Ratio (V.S.W.R.) measurement must be performed prior to the use of the transmitter. A.V.S.W.R. ratio in excess of 2:1 may damage the transmitter.
1.Be sure the operator has read and understands part 95, F.C.C. Rules and Regula tions prior to operating the transmitter.
2.Select the desired channel.
3.If the channel is clear, depress the push-to-talk switch on the microphone and speak in a normal voice.
_ 4 _
CONTROLS AND THEIR FUNCTIONS
1. OFF/ON VOLUME: To turn the transceiver on, rotate this control clockwise past click. To turn the transceiver off, rotate the control counterclockwise past click. Rotate the control clockwise for a comfortable audio level.
2.SQUELCH: The Squelch control is normally set to a position which eliminates undesired background noise with no signal present. With the audio adjusted to a satisfactory level, rotate the Squelch control clockwise to the point where the sound from the speaker is cut off. In this position, there will be no sound from the speaker until a signal is received. In order to hear weak signals, it may be necessary to rotate the Squelch control counterclockwise, allowing some back ground noise to be heard.
3.PA SWITCH {on SQUELCH control); Full counterclockwise rotation of the squelch control engages the PA function. The PA function should not be used unless an external speaker is connected. In the squelch (or CB) position, the PA function is disabled and the radio will transmit and receive on the selected channel.
4.MODE SELECTOR: This switch selects AM, USB, or LSB mode of operation. This selector changes the mode of operation of both transmitter and receiver simultaneously. Set the selector to the mode on which you wish to com municate.
-5 -
Loading...