9.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 1 place stamp here Cobra Electronics Corporation 6500 W.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 2 This device complies with Part 15 of the F.C.C. rules. Operation is subject to the following conditions: (1) This device may not cause harmful interference and (2) This device must accept any interference received, including interference that may cause undesired operation. PRINTED IN THAILAND ©COBRA ELECTRONICS CORP.
19.ULTRA.MANUAL.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 4 HOW TO USE YOUR 40 CHANNEL CITIZENS BAND 2-WAY MOBILE RADIO MODEL 19 ULTRA II Contents Page The CB Story ..................................................................................................1 Introduction Frequency Range........................................................................................2 Specifications ..................................................................................................3 Installation Location ..
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 5 The CB Story The Citizens Band lies between the shortwave broadcast and 10-meter Amateur radio bands, and was established by law in 1949. The Class D two-way communications service was opened in 1959. (CB also includes a Class A citizens band and Class C remote control frequencies.) FCC regulations permit only ÒtransmissionsÓ (one party to another) rather than ÒbroadcastsÓ (to a wide audience).
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 6 Introduction Frequency Range Your COBRA CB radio provides high-level, trouble-free performance over the following frequency assignments: Channel Frequency Chann Frequency Channel in MHz Channel in MHz 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 26.965 26.975 26.985 27.005 27.015 27.025 27.035 27.055 27.065 27.075 27.085 27.105 27.115 27.125 27.135 27.155 27.165 27.175 27.185 27.205 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 27.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 7 Specifications GENERAL Channels Frequency Range Frequency Control Frequency Tolerance Operating Temp. Range Microphone Input Voltage Current Drain Size Weight Antenna Connector Semiconductors Meter TRANSMITTER Power Output Modulation Frequency Output Impedance Output Protection RECEIVER Sensitivity Selectivity Image Rejection Adjacent CH. Rejection IF Frequencies 40. 26.965 to 27.405 MHz. Phase-Locked Loop (PLL) synthesizer. 0.005% -30¡C to +50¡C.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 8 Installation Location Plan the location of the transceiver and microphone bracket before starting the installation. Select a location that is convenient for operation and does not interfere with the driver or passengers in the vehicle. In automobiles, the transceiver is usually mounted to the underneath of the dash panel, with the microphone bracket beside it.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 9 Installation (Cont.) 3. Connect the antenna cable plug to the standard receptacle on the unit. Most CB antennas are terminated with a type PL-259 plug which mates with the receptacle marked ÒANT.Ó 4. Connect the red lead of DC power cord to +13.8VDC. In automo- bile installations, +13.8VDC is usually obtained from the accessory contact in the fuse box.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 10 Installation (Cont.) CB Antenna Since the maximum allowable power output of the transmitter is limited by the FCC, the antenna is one important factor affecting transmission distance. Only a properly matched antenna system will allow maximum power transfer from the 50-ohm transmission line to the radiating element. In mobile installations (cars, trucks, boats, etc.), an antenna system that is non-directional should be used.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 11 Installation(Cont.) Installation (Cont.) Ignition Noise Interference Use of a mobile receiver at low signal levels is normally limited by the presence of electrical noise. The primary source of noise in automobile installations is from the alternator and ignition system in the vehicle. Under most operating conditions, when signal level is adequate, the background noise does not present a serious problem.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 12 Operation Controls and Indicators Refer to controls, indicators and connectors as illustrated below: 6 5 4 7 8 9 3 1 2 A. Front Panel 1. Off/On/Volume. Turn clockwise to turn power on and set the desired listening volume. 2. Squelch. This control is used to cut off or eliminate receiver back- ground noise in the absence of an incoming signal.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 13 Operation (Cont.) 5. CB/PA Switch. Selects mode of operation. In the CB position, the PA function is disabled and the unit will transmit and receive on the selected channel. The PA function should not be used unless a PA speaker is connected. 6. S-RF/Power Meter. Shows relative transmitter RF output power and input signal strength when receiving. The five LED (Light Emitting Diode) segments glow to indicate receive or transmit activity. 7. TX Indicator LED.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 14 Operation (Cont.) 2 1 3 4 C. Rear Panel 1. ANTENNA CONNECTOR: This SO-239 connector permits connection of the transmission line cable male connector to the transceiver. 2. PUBLIC ADDRESS: An external 8-ohm 4.0 watt PA speaker may be connected to the PA Speaker Jack when this unit is used as a public address system. The speaker should be directed away from the microphone to prevent acoustic feed-back.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 15 Operation (Cont.) Operating Procedure to Receive 1. Be sure that the power, antenna and microphone are properly connected before proceeding further. The CB/PA switch should be in the CB mode. The Channel 9/NOR Switch should be in the NOR mode. 2. Turn the radio ON by rotating the VOLUME CONTROL clockwise. 3. Rotate SQUELCH CONTROL counterclockwise until incoming signal is heard. 4. Turn the CHANNEL SELECTOR KNOB to select the desired operating channel. 5.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 16 Maintenance and Adjustment Your COBRA CB transceiver is specifically designed for the environment encountered in mobile installations. The use of all solid state circuitry and its light weight result in high reliability. Should a failure occur, however, review the following, then if necessary replace parts only with identical parts. Do not substitute. Refer to the schematic diagram and parts list. 1.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 17 Appendix Citizens Band radio operators have largely adopted the “10-code” for standard questions and answers. Its use permits faster communications and better understanding in noisy areas.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 18 Appendix (Cont.) 1. 2. 3. 4. 5. 6. ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ A Few Rules That Should Be Obeyed You are not allowed to carry on a conversation with another station for more than five minutes at a time without taking a one-minute break, to give others a chance to use the channel. You are not allowed to blast others off the air by overpowering them with illegally amplified transmitter power, or illegally high antennas. You can't use CB to promote illegal activities.
.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 19 Appendix (Cont.) Use Channel 9 For Emergency Message Only FCC give the following examples of permitted and prohibited types of communications for use on Channel 9. These are guidelines and are not intended to be all-inclusive. Permitted: Example Message: Yes ÓA tornado sighted six miles north of town.Ó No ÓThis is observation post number 10. No tornado sighted.Ó Yes ÓI am out of gas on Interstate 95 at mile marker 121.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 20 If You Think You Need Service If You Think You Need Service, Call 773-889-3087 “If your product should require factory service please call Cobra first before sending your unit in. This will ensure the fastest turnaround time on your repair.” You may be asked to send your unit to the Cobra factory. It will be necessary to furnish the following, in order to have the product serviced and returned. 1.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 21 Warranty Limited Two Year Warranty COBRA ELECTRONICS CORPORATION warrants that its COBRA citizens band (CB) radio, and the component parts thereof, will be free of defects in workmanship and materials for a period of two (2) years from the date of first consumer purchase. This warranty may be enforced by the first consumer purchaser, provided that the product is utilized within the U.S.A.
19.ULTRA.MANUAL.qx 9/15/97 4:09 PM Page 22 OPTIONAL ACCESSORIES You can find these fine accessories at your local Cobra CB dealer. Description Part No. Cost Ea. ELECTRET CONDENSER MICROPHONE Replacement microphone with 4-pin screw-on connector545-157-N-004 DC POWER CORD Exact replacement 545-141-N-001 MOUNTING BRACKET Exact replacement 250-199-9-001 MOUNTING BRACKET SCREWS Exact replacements 523-775-9-001 = Amount $15.00 $7.00 $4.50 $2.00 ea POWER MICROPHONE Amplified power mic CA-75 $19.
