M38-TR-286AM/SSB CB Transceiver

Printed In Malaysia PD990922 TR-286 GX SOLID STATE CITIZENS BAND AM/SSB MOBILE TRANSCEIVER OWNER’S MANUAL TABLE OF CONTENTS PAGE CHAPTER 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CHAPTER 2Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Mounting The Radio . . . . . . . . . . . . . . . . . . . . . . . 3 Ignition Noise Interference . . . . . . . . . . . . . . . . . . 4 Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Tuning The Antenna for Optimum SWR . . . . . . . 5 External Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Public Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CHAPTER 3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Procedure to Receive And Transmit . . . . . . . . . . . 12 Receiving SSB Signals . . . . . . . . . . . . . . . . . . . . . 13 Alternate Microphone And Installation . . . . . . . . . 15 Maintenance And Adjustment . . . . . . . . . . . . . . . . 18 A Few Rules That Should Be Obeyed . . . . . . . . . . 19 How Your CB Can Serve You . . . . . . . . . . . . . . . . 19 Use Channel 9 For Emergency Messages Only . . . 20 CHAPTER 1 SPECIFICATIONS GENERALFrequency Range 26.965 - 27.405 MHz Channels 40 Frequency Control Phase-Lock-Loop ( PLL ) Synthesizer Frequency Stability 0.001% Temperature Range -30 ° C to +50 ° C Input Voltage 13.8V DC Antenna Impedance 50 Ohms Size 7 7/8" (W) x 9 1/4" (D) x 2 3/8" (H) Weight 5 lbs. TRANSMITTERRF Power Output AM 4W ; SSB 12W PEP Carrier Emission -55 dB Spurious Emission -55 dB Audio Distortion 10% Frequency Response 300 to 2500 Hz Microphone Dynamic RECEIVERSensitivity for 10 dB (S+N)/N < 1.0 uV (AM) < 0.5 uV (SSB) Squelch Sensitivity < 0.5 uV Image Rejection More than 65 dB AGC Figure of Merit 100 mV for 10 dB Change in Audio Output Audio Response 300 to 2500 Hz ( SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE ) - 1 - - 2 - CHAPTER 2 INSTALLATION LOCATIONPlan the location of the transceiver and microphone bracket before startingthe installation. Select a location that is convenient for operation and doesnot interfere with the driver or passengers. In automobiles, the transceiver isusually mounted below the dash panel with the microphone bracket beside it.MOUNTING THE RADIOThe transceiver is supplied with a universal mounting bracket. Whenmounting the bracket and radio to your car, make sure it is mechanicallystrong. Also, provide a good electrical grounding connection to the chassisof the vehicle. Proceed as follows to mount the transceiver :1. After you have determined the most convenient location in your vehicle, hold the transceiver with mounting bracket in the exact location desired. Ifnothing will interfere with mounting it in the desired position, remove themounting bolts. Before drilling the holes, make sure nothing will interferewith the installation of the mounting bolts. 2. Connect the antenna cable plug to the standard receptacle on the rear panel. Most transceiver antennas are terminated with a type PL-259 plugand mate with the ANT receptacle. 3. Connect the red DC power input wire (with the fuse) to +13.8V DC. This wire extends from the rear panel. In automobile installation, +13.8V DC isusually obtained from the accessory contact on the ignition switch. Thisprevents the set being left on accidentally when the driver leaves the carand also permits operating the unit without the engine running. Locate theaccessory contact on most ignition switches by tracing the power wire fromthe AM broadcast receiver in the car. 4. Connect the black lead to -13.8V DC. This is usually the chassis of the car. Any convenient location with good electrical contact (remove paint)may be used. 5. Mount the microphone bracket on the right side of the transceiver or near the transceiver, using two screws supplied. When mounting in anautomobile, place the bracket under the dash so that the microphone isreadily accessible. IGNITION NOISE INTERFERENCEUse of a mobile receiver at low signal levels is normally limited by thepresence of electrical noise. The primary source of noise in automobileinstallations is from the generator and ignition system in the vehicle. Undermost operating conditions, when signal level is adequate, the backgroundnoise does not present a serious problem. Also, when extremely low levelsignals are being received, the transceiver may be operated with vehicleengine turned off. The unit requires very little current and therefore will notsignificantly discharge the vehicle battery.Even though the transceiver has ANL and NB controls, in some installationsignition interference may be high enough to make g ood communications impossible. The electrical noise may come from several sources. Manypossibilities exist as variations between vehicles require different solutionsto reduce the noise.ANTENNAA vertically polarized, quarter-wavelength whip antenna provides the mostreliable operation and greatest range. Shorter, loaded-type whip antennas aremore attractive, compact and adequate for applications where the maximumpossible distance is not required. Also, the loaded whips do not present theproblems of height imposed by a full quarter-wavelength whip.Mobile whip antennas utilize the metal body of the vehicle as a groundplane. When mounted at a corner of the vehicle they are slightly directional,in the direction of the body of the vehicle. For all practical purposes,however, the radiation pattern is nondirectional. The slight directionalcharacteristic will be observed only at extreme distances. A standard antennaconnector (type SO-239) is provided on the transceiver for easy connectionto …

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RANGER TR-286GX EXTERNAL PHOTOGRAPHS RIGHT SIDE VIEW TOP VIEW LEFT SIDE VIEW BOTTOM VIEW FRONT VIEW BACK VIEW

RANGER TR-286GX INTERNAL PHOTOGRAPHS CIRCUIT BOARD, TRAC SIDE CIRCUIT BOARD, COMPONENT SIDE SPEAKER

TR 286GX SCHEMATIC DIAGRAM

ENGINEERING STATEMENT For Type Certification of Ranger Communications (M) SDN. BHD. Model No: TR-286GX FCC ID: M38-TR-286 I am an Electronics Engineer, a principal in the firm of Hyak Laboratories, Inc., Springfield, Virginia. My education and experience are a matter of record with the Federal Communications Commission. Hyak Laboratories, Inc. has been authorized by Ranger Communications, to make type certification measurements on the TR-286GX transceiver. These tests were made by me or under my supervision in our Springfield laboratory. Test data and documentation required by the FCC for type certification are included in this report. It is submitted that the above-mentioned transceiver meets all applicable FCC requirements. ______________________________ Rowland S. Johnson Dated: November 24, 1999 A. INTRODUCTION The following data are submitted in connection with this request for type certification of the TR-286GX transceiver in accordance with Part 2, Subpart J of the FCC Rules. The TR-286GX is both double-sideband amplitude modulated and single-sideband-suppressed-carrier transmitter/receiver combination intended for operation in the citizens radio service. The transmitter has 40-channel capability in the 26.965 - 27.405 MHz band utilizing phase locked loop (PLL) technology. B. GENERAL INFORMATION REQUIRED FOR TYPE CERTIFICATION (Paragraph 2.983 of the Rules) 1. Name of applicant: Ranger Communications (M) SDN. BHD. 2. Identification of equipment: FCC ID: M38-TR-286 a. The equipment identification label is submitted as a separate exhibit. b. Photographs of the equipment are submitted as a separate exhibit. 3. Quantity production is planned. 4. Technical description: a. 6k00A3E or 4k00J3E emission b. Frequency range: 26.965 - 27.406 MHz c. Operating power of transmitter is fixed at the factory at less than 4 watts, AM; and 12 watts PEP. d. Maximum power rating under 95.635(c) of the Rules is 4 watts, AM and 12 watts PEP. e. The dc voltage and dc currents at final amplifier: Collector voltage: 12.6 V Collector current: 710 mA @ 13.8 Vdc input. f. Function of each active semiconductor device: See Appendix 1. g. Complete circuit diagram is submitted as a separate exhibit. 2 h. A user instruction book is submitted as a separate exhibit. i. The transmitter tune-up procedure is submitted as a separate exhibit. j. A description of circuits for stabilizing frequency is included in Appendix 3. k. A description of circuits and devices employed for suppression of spurious radiation and for limiting modulation is included in Appendix 4. l. Not applicable. B. GENERAL INFORMATION...(Continued) 5. Data for 2.985 through 2.997 follow this section. 6. RF Power Output (Paragraph 2.985(a),(b)(1) of the Rules) RF power output in the AM mode was measured with a Bird 4421 RF power meter and a Narda 765-20 50 ohm dummy load. SSB power was measured with a Bird Model 43 wattmeter with peak power option 4300-400. See plot shown in Figure 1. Power was measured with a supply voltage of 13.8 volts, and indicated: Channel Power, watts HI LOPEP AM LSBUSB 1 3.8 0.7 11.8 11.8 21 3.9 0.8 11.9 11.9 40 3.9 0.8 11.9 11.9 C. MODULATION CHARACTERISTICS NOTE: All audio data were taken with “mic gain” fully CW. 1. AF_Frequency_Response A curve showing frequency response of the transmitter is shown in Figure 2. Reference level was taken as a 1 kHz tone with 50% modulation, as measured on a Datatech 209 modulation meter, using a Audio Precision TRMS voltmeter and tracking generator. 3 2. Modulation_Limiting Curves of AM modulation limiting for both positive and negative peaks are shown in Figures 3a and 3b, respectively. Characteristics at 300, 2500, and 3069 Hz are shown using a Datatech 209 modulation meter. Signal level was established with a Audio Precision TRMS voltmeter and tracking generator. The curves show compliance with Paragraph 95.633(d) of the Rules. 3. Modulation_Limiter_Attack_Time Modulation limiter attack time was measured by applying to the microphone input terminals a pulsed tone at 2500 Hz, 16 dB above the level required for 50% modulation at the frequency of maximum response, 3069 Hz. The spectrum analyzer was tuned to upper and lower fourth- order sidebands in the time domain. Horizontal sweep of the analyzer was triggered in synchronism with the tone turn-on. Sweep speed was 500 milliseconds per division. Plots are included as Figures 4a and 4b. Any transients observed in excess of 33 dB attenuation as referenced to the carrier were less than 20 ms in duration. 4 FIGURE 1 RF POWER OUTPUT VS AUDIO INPUT VOLTAGE Two-Tone: 2400 + 500 Hz SIDEBAND MODE RF POWER OUTPUT VS AUDIO INPUT FCC ID: M38-TR-286 FIGURE 1 5 FIGURE 2 TRANSMITTER FREQUENCY RESPONSE TRANSMITTER FREQUENCY RESPONSE FCC ID: M38-TR-286 FIGURE 2 6 FIGURE 3a AM MODULATION LIMITING - POSITIVE PEAKS MODULATION LIMITING CHARACTERISTICS Percent modulation as a function of input level at microphone jack in dBm for 300 Hz, 2500 Hz, and 3069 Hz tones. MODULATION LIMITING POSITIVE PEAKS FCC ID: M38-TR-286 FIGURE 3a 7 FIGURE 3b AM MODULATION LIMITING - NEGATIVE PEAKS MODULATION LIMITING CHARACTERISTICS Percent modulation as a function of input level at microphone jack in dBm for 300 Hz, 2500 Hz, and 3069 Hz tones. MODULATION LIMITING NEGATIVE PEAKS FCC ID: M38-TR-286 FIGURE 3b 8 FIGURE 4a MODULATION LIMITER ATTACK TIME Measurement_Conditions: 16 dB over 50% modulation level at 3069 Hz with 2500 Hz tone, upper fourth order sideband; horizontal scale 100 ms/div. UPPER FOURTH-ORDER SIDEBAND LIMITER ATTACK TIME FCC ID: M38-TR-286 FIGURE 4a 9 FIGURE 4b MODULATION LIMITER ATTACK TIME Measurement_Conditions: 16 dB over 50% modulation level at 3069 Hz with 2500 Hz tone, lower fourth order sideband; horizontal scale 100 ms/div. LOWER FOURTH-ORDER SIDEBAND LIMITER ATTACK TIME FCC ID: M38-TR-286 FIGURE 4b 10 C. MODULATION CHARACTERISTICS (Continued) 4. Occupied_Bandwidth_-_AM(Para. 2.989(c) of the Rules) Figure 5a is a plot of the sideband envelope of the transmit…

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