MEE-VX-129CNCB Transceiver

Printed In Malaysia PD010704 ςΙΡΑΓΕ ςΙΡΑΓΕ ςΙΡΑΓΕ ςΙΡΑΓΕ VX-129CN SOLID STATE 40 CHANNEL AM MOBILE CB RADIO OWNER’S MANUAL ς ΙΡΑΓΕ ςΞ−129ΧΝ NORMAL LO W PA OFF CAL OFF OFF MIC GAIN VOL SQ RF GAIN SW R CAL SWR S/RF AN L C B NB TONE AN T CLARIFY CH9 TX/RX - 1 - TABLE OF CONTENTS PAGE CHAPTER 1Spe cificatio ns . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . 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 3Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Procedure to Receive And Transmit . . . . . . . . . . . . . . . . . . . . . . . 11 Alternate Microphone And Installation . . . . . . . . . . . . . . . . . . . . 12 Maintenance And Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 A Few Rules That Should Be Obeyed . . . . . . . . . . . . . . . . . . . . . 16 How Your CB Can Serve You . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Use CH 9 For Emergency Messages Only . . . . . . . . . . . . . . . . . . 17 CHAPTER 1 SPECIFICATIONS GENERALModel VX-129CN Channels 40 Frequency Range 26.965 ~ 27.405 MHz Emission AM Frequency Control Phase-Lock-loop (PLL) Synthesizer Frequency Stability 0.001% Temperature Range -30 ° C to +50 ° C Antenna Impedance 50 Ohms Antenna Connectors Standard SO-239 type Input Voltage 13.8V DC Size 7 7/8” (W) x 9 1/4” (D) x 2 3/8” (H) Weight 5.0 lbs. TRANSMITTERRF Power Output AM : 4W 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) Squelch Sensitivity < 0.5 uV Image Rejection More than 65 dB AGC Figure of Merit 100 mV for 10dB Change in Audio Output Audio Power Output 2.5W @ 10% Distortion Audio Response 300 to 2500 Hz (SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE) CHAPTER 2 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 notinterfere with the driver or passengers in the automobiles, the transceiver isusually mounted the dash panel with the microphone bracket beside it.MOUNTING THE RADIO The transceiver is supplied with a universal mounting bracket. When mounting the bracket and radio to your car, make sure it is mechanicallystrong. Also provide a good electrical connection to the chassis of thevehicle. Proceed as follows to mount the transceiver:1. After yo u have deter mi ned the most co nve nient location i n yo ur ve hicle,hold the transceiver with mounting bracket in the exact location desired.If nothing will interfere with mounting it in the desired position removethe mounting bolts. Before drilling the holes, make sure nothing willinterfere with the installation of the mounting bolts. 2. Connect the antenna cable plug to the standard receptacle on the rearpanel. Most transceiver antennas are terminated with a type PL-259 plugand mate with the 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, +13.8VDC is usually obtained from the accessory contact on the ignition switch.This prevent the set being left on accidentally when the driver leaves thecar and also permits operating the unit without the engine running.Loca te the accessory contact o n most i gnition switc hes by tracing thepower wire from the AM broadcast receiver in the car. 4. Connect the black lead to –13.8V DC. This is usually the chassis of thecar. Any convenient location with good electrical contact (remove paint)ma y be used. 5. Mount the microphone bracket on the right side of the transceiver, usingtwo screws supplied. When mounting in an automobile, place thebracket under the dash so that microphone is readily accessible. - 2 - - 3 - 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 automobileinstallation 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 vehiclesengine 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 installation ignition interference may be high enough to make good communicationsimpossible. The electrical noise may come from several sources. Manypossibilities exist, as variations between vehicles require different solutionsto reduce the noise.ANTENNA A vertically polarized, quarter-wavelength whip antenna provides the most reliable operation and greatest range. Shorter, loaded-type whip antennas aremore attractive, compact and adequate for applications where the maximumpossible distance is not required. Also…

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Front View Left Side View Right Side View Top View Rear View

Circuit Board, Top Circuit Board, Bottom

Operational Description The VX-129CN is a double sideband, amplitude modulated, transmitter/receiver combination intended for mobile 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.

ADJUSTMENT INSTRUCTION FUNCTION CONNECTS & SETTING EQUIPMENTS ADJUSTMENTS & MEASUREMENTS TX FREQUENCY CH40, MOD OFF OSCILLOSCOPE ADJUST VC1. MEASUREMENT 27.405 FREQ. COUNTER ± 100HZ MODULATION METER TX ALIGNMENT CH19, MOD OFF OSCILLOSCOPE ADJUST L24~L14 TO POWER MAX. FREQ. COUNTER ADJUST VC1. MEASUREMENT 27.185 MODULATION METER ± 100HZ. ADJUST L24~L18. BALANCE POWER BETWEEN CH1 & CH40. TX POWER TX CH1~CH40. OSCILLOSCOPE MOD OFF. ADJUST L13 MEASUREMENT SET S/RF/CAL/SWR TO FREQ. COUNTER 4W ±0.5W. (26.965-27.405MHZ). ADJUST S/RF MODULATION METER VR5 RF POWER METER NEEDLE UNTIL IT IS IN BETWEEN THE GREEN & RED BARON PWR SCALE.AF SIGNAL 30mV.1KHZ TO MICROPHONE.ADJUST VR4 MEASUREMENT 90%~100%.DISTORTION < 7%. PA FUNCTION SET PA/CB TO PA EXP SP PA EXP AF SIGNAL 1KHZ. 30mV. PA OUTPUT > 5V. CH9. MOD OFF UNPLUG THE ANT. ADJUST ANT LED SET TO SWR ADJUST VR6 UNTIL ANT LED LIGHTED. SWITCH SWR TO CAL. THE METER INDICATION TO . PLUG 100ohm LOAD RESISTOR & THE METER INDICATION MUST BE AT SWR. TESTING 26.965~27.405MHZ OSCILLOSCOPE TX POWER : 4 ± 0.5W. FREQ. COUNTER AM MODULATION : 90% ± 10%. MODULATION METER

ENGINEERING STATEMENT For Type Certification of Ranger Communications (Shanghi) Inc. Model No: VX-129CN FCC ID: MEE-VX-129CN 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 (Shanghi) Inc. to make type certification measurements on the VX-129CN 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 require- ments. ______________________________ Rowland S. Johnson Dated: January 16, 2002 A. INTRODUCTION The following data are submitted in connection with this request for type acceptance of the VX-129CN transceiver in accordance with Part 2, Subpart J of the FCC Rules. The VX-129CN is a double sideband, amplitude modulated, transmitter/receiver combination intended for mobile 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 ACCEPTANCE (Paragraph 2.983 of the Rules) 1. Name of applicant: Ranger Communications (Shanghi) Inc. 2. Identification of equipment: FCC ID: MEE-VX-129CN a. The equipment identification included as a separate exhibit. b. Photographs of the equipment are included as a separate exhibit. 3. Quantity production is planned. 4. Technical description: a. 6k00A3E emission b. Frequency range: 26.965 - 27.406 MHz c. Operating power of transmitter is fixed at the factory at less than 4 watts. d. Maximum power rating under 95.635(c) of the Rules is 4 watts. e. The dc voltage and dc currents at final amplifier: Collector voltage: 13.7 V Collector current: 620 mA @ 13.8 Vdc input. f. Function of each active semiconductor device: See Appendix 1. g. Complete circuit diagram is included as a separate exhibit h. A draft instruction book is included as a separate exhibit. i. The transmitter tune-up procedure is included as a separate exhibit. 2 B. GENERAL INFORMATION (Continued) j. A description of circuits for stabilizing frequency is included in Appendix 2. k. A description of circuits and devices employed for suppression of spurious radiation and for limiting modulation is included in Appendix 3. l. Not applicable. 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. (The transmitter was tuned by the factory.) Power was measured with a supply voltage of 13.8 volts, and indicated: Channel Power, watts 1 3.3 21 3.2 40 3.0 C. MODULATION CHARACTERISTICS 1. AF_Frequency_Response A curve showing frequency response of the transmitter is shown in Figure 1. Reference level was taken as a 1 kHz tone with 50% modulation, as measured on a Data Tech 209 modulation meter, using a Audio Precision TRMS voltmeter and tracking generator. 2. Modulation_Limiting Curves of AM modulation limiting for both positive and negative peaks are shown in Figures 2a and 2b, respectively. Characteristics at 300, 990, and 2500 Hz are shown using a Data Tech 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 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, 990 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 100 milliseconds per division. Plots are included as Figures 3a and 3b. Any transients observed in excess of 33 dB attenuation as referenced to the carrier were less than 20 ms in duration. 4 FIGURE 1 TRANSMITTER FREQUENCY RESPONSE TRANSMITTER FREQUENCY RESPONSE FCC ID: MEE-VX-129CN FIGURE 1 5 FIGURE 2a AM MODULATION LIMITING - POSITIVE PEAKS MODULATION LIMITING CHARACTERISTICS Percent modulation as a function of input level at microphone jack in dBm for 300 Hz, 990 Hz, and 2500 Hz tones. MODULATION LIMITING POSITIVE PEAKS FCC ID: MEE-VX-129CN FIGURE 2a 6 FIGURE 2b AM MODULATION LIMITING - NEGATIVE PEAKS MODULATION LIMITING CHARACTERISTICS Percent modulation as a function of input level at microphone jack in dBm for 300 Hz, 990 Hz, and 2500 Hz tones. MODULATION LIMITING NEGATIVE PEAKS FCC ID: MEE-VX-129CN FIGURE 2b 7 FIGURE 3a MODULATION LIMITER ATTACK TIME Measurement_Conditions: 16 dB over 50% modulation level at 990 Hz with 2500 Hz tone, upper fourth order sideband; horizontal scale 100 ms/div. UPPER FOURTH-ORDER SIDEBAND LIMITER ATTACK TIME FCC ID: MEE-VX-129CN FIGURE 3a 8 FIGURE 3b MODULATION LIMITER ATTACK TIME Measurement_Conditions: 16 dB over 50% modulation level at 990 Hz with 2500 Hz tone, lower fourth order sideband; horizontal scale 100 ms/div. LOWER FOURTH-ORDER SIDEBAND LIMITER ATTACK TIME FCC ID: MEE-VX-129CN FIGURE 3b 9 C. MODULATION CHARACTERISTICS (Continued) 4. Occupied Bandwidth-AM (Para.2.989(c) of the Rules) Figure 4 is a plot of the sideband envelope of the transmitter taken from a Tektronix 494P spectrum ana- lyzer. Modulation corresponded to conditions of 2.989(a) and consisted of 2500 Hz tone at an input level 16 dB greater than that necessary to produce 50% modulation at 990 Hz, the frequency of maximum response. Measured modulation under these conditions was 89% pos., 87% neg. The plots are within the limits imposed by Paragraph 95.631(b)(1,3) for double sideband AM modulatio…

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Printed In Malaysia PD010704 ςΙΡΑΓΕ ςΙΡΑΓΕ ςΙΡΑΓΕ ςΙΡΑΓΕ VX-129CN SOLID STATE 40 CHANNEL AM MOBILE CB RADIO OWNER’S MANUAL ς ΙΡΑΓΕ ςΞ−129ΧΝ NORMAL LO W PA OFF CAL OFF OFF MIC GAIN VOL SQ RF GAIN SW R CAL SWR S/RF AN L C B NB TONE AN T CLARIFY CH9 TX/RX - 1 - TABLE OF CONTENTS PAGE CHAPTER 1Spe cificatio ns . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . 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 3Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Procedure to Receive And Transmit . . . . . . . . . . . . . . . . . . . . . . . 11 Alternate Microphone And Installation . . . . . . . . . . . . . . . . . . . . 12 Maintenance And Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 A Few Rules That Should Be Obeyed . . . . . . . . . . . . . . . . . . . . . 16 How Your CB Can Serve You . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Use CH 9 For Emergency Messages Only . . . . . . . . . . . . . . . . . . 17 CHAPTER 1 SPECIFICATIONS GENERALModel VX-129CN Channels 40 Frequency Range 26.965 ~ 27.405 MHz Emission AM Frequency Control Phase-Lock-loop (PLL) Synthesizer Frequency Stability 0.001% Temperature Range -30 ° C to +50 ° C Antenna Impedance 50 Ohms Antenna Connectors Standard SO-239 type Input Voltage 13.8V DC Size 7 7/8” (W) x 9 1/4” (D) x 2 3/8” (H) Weight 5.0 lbs. TRANSMITTERRF Power Output AM : 4W 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) Squelch Sensitivity < 0.5 uV Image Rejection More than 65 dB AGC Figure of Merit 100 mV for 10dB Change in Audio Output Audio Power Output 2.5W @ 10% Distortion Audio Response 300 to 2500 Hz (SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE) CHAPTER 2 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 notinterfere with the driver or passengers in the automobiles, the transceiver isusually mounted the dash panel with the microphone bracket beside it.MOUNTING THE RADIO The transceiver is supplied with a universal mounting bracket. When mounting the bracket and radio to your car, make sure it is mechanicallystrong. Also provide a good electrical connection to the chassis of thevehicle. Proceed as follows to mount the transceiver:1. After yo u have deter mi ned the most co nve nient location i n yo ur ve hicle,hold the transceiver with mounting bracket in the exact location desired.If nothing will interfere with mounting it in the desired position removethe mounting bolts. Before drilling the holes, make sure nothing willinterfere with the installation of the mounting bolts. 2. Connect the antenna cable plug to the standard receptacle on the rearpanel. Most transceiver antennas are terminated with a type PL-259 plugand mate with the 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, +13.8VDC is usually obtained from the accessory contact on the ignition switch.This prevent the set being left on accidentally when the driver leaves thecar and also permits operating the unit without the engine running.Loca te the accessory contact o n most i gnition switc hes by tracing thepower wire from the AM broadcast receiver in the car. 4. Connect the black lead to –13.8V DC. This is usually the chassis of thecar. Any convenient location with good electrical contact (remove paint)ma y be used. 5. Mount the microphone bracket on the right side of the transceiver, usingtwo screws supplied. When mounting in an automobile, place thebracket under the dash so that microphone is readily accessible. - 2 - - 3 - 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 automobileinstallation 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 vehiclesengine 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 installation ignition interference may be high enough to make good communicationsimpossible. The electrical noise may come from several sources. Manypossibilities exist, as variations between vehicles require different solutionsto reduce the noise.ANTENNA A vertically polarized, quarter-wavelength whip antenna provides the most reliable operation and greatest range. Shorter, loaded-type whip antennas aremore attractive, compact and adequate for applications where the maximumpossible distance is not required. Also…

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