Assessments - 3, GPA: 3.3
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Date of Purchase Dealer Name Keep this manual for detailed information about your Cobra CB Radio System. SAVE YOUR SALES RECEIPT, THE CARTON AND “PACKING” FOR POSSIBLE FUTURE USE. The Cobra ® line of quality products includes: CB radios microTALK ® radios Radar/Laser Detectors GPS Safety Alert ® Traffic Warning Systems Accessories HighGear ™ Accessories If You Think You Need Service, please contact your HOW TO USE YOUR 40 CHANNEL CITIZENS BAND 2-WAY MOBILE RADIO Model 19 DX II Introduction Frequency Range........................................................................................2 Specifications ..................................................................................................3 Installation Location ...................................................................................................... 4 Mounting and Connections ..................................................................4- 5 CB Antenna ................................................................................................ 6 Ignition Noise Interference ...................................................................... 7 Operation Controls and Indicators....................................................................8-9-10 Operating Procedure to Receive ............................................................11 Operating Procedure to Transmit ..........................................................11 Maintenance and Adjustment ....................................................................12 Appendix Ten Code....................................................................................................A Few Rules That Should Be Obeyed ..................................................14 How Your CB Can Serve You ................................................................Use Channel 9 for Emergency Messages Only....................................15 Introduction Specifications Frequency Range Your COBRA CB radio provides high-level, trouble-free performance over the following frequency assignments: Channel Channel Frequency Channel Channel Frequency in MHz in MHz 1 26.965 21 27.215 2 26.975 22 27.225 3 26.985 23 27.255 4 27.005 24 27.235 5 27.015 25 27.245 6 27.025 26 27.265 7 27.035 27 27.275 8 27.055 28 27.285 9 27.065 29 27.295 10 27.075 30 27.305 11 27.085 31 27.315 12 27.105 32 27.325 13 27.115 33 27.335 14 27.125 34 27.345 15 27.135 35 27.355 16 27.155 36 27.365 17 27.165 37 27.375 18 27.175 38 27.385 19 27.185 39 27.395 20 27.205 40 27.405 These frequencies are generated and accurately controlled by a phase lock hoop (PLL) circuit, comprised of the latest state-of-integrated circuit technology, ensuring high reliability and excellent frequency stability on the above To obtain maximum performance descriptions and operating 2 GENERAL Channels 40. Frequency Range 26.965 to 27.405 MHz. Frequency Control Phase-Locked Loop (PLL) synthesizer. Frequency Tolerance 0.005% . Operating Temp. Range -22° F to +122° F (-30° C to +50° C) . Microphone Plug-in type; Electret condenser. Input Voltage 13.8V DC nom. (negative ground) . Current Drain Transmit: AM full mod., 1.5A (maximum) . Receive: (Squelched, 0.115A, full audio output 1.0A (nominal). Size 6-5/8”D x 4-9/16”W x 1-13/16”H (165mm x 116 mm x 44 mm.) Weight 3 lbs., 4 oz. (1.0 kg.). Antenna Connector UHF, SO-239. Semiconductors 22 transistors, 17 diodes, 3 integrated circuits, 7 LEDs. Meter Indicates relative power output and received signal strength. TRANSMITTER Power Output 4 watts. Modulation High- and low-level Class B amplitude. Frequency 300 to 3000 Hz. Output Impedance 50 ohms, unbalanced. Output Protection Output transistors protected against mismatch up to 20:1. RECEIVER Sensitivity Less than 1.V for 10dB(S + N)/N. Selectivity 6 dB @ 7 KHz, 55dB @ 15 KHz. Image Rejection 60 dB typical. Adjacent CH. Rejection 50 dB, typical. IF Frequencies Double conversion, 1st: 10.695 MHz. 2nd: 455 KHz. Automatic Gain Control Less than 10dB change in audio output for (AGC) inputs from 10 to 50,000.V. Squelch Adjustable; threshold less than 1.V. Audio Output Power 3 watts. Frequency Response 300-3000 Hz. Distortion Less than 10% @ 3 watts @ 1000 Built-in Speaker 8 ohms, round. External Speaker 8 ohms; disables internal (Not Supplied) connected. PA SYSTEM Power Output 4 watts into external External Speaker 8 ohms; a separate (Not Supplied) (Specifications 3 Installation Installation (Cont.) 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. Mounting Connection The transceiver is held in the universal mounting bracket by two thumb screws, permitting adjustment at the most convenient angle. A universal mounting bracket is supplied along with se...