OPERATING MANUAL TABLE OF CONTENTS. INTRODUCTION THE CB STORY SPECIFICATIONS semen GENERAL TRANSMITTER RECEIVER. CONNECTIONS IGNITION NOISE INTERFERENCE ANTENNA. ...cccovoeasrarrserinzrsoss TUNING THE ANTENNA FOR EXTERNAL SPEAKER PA LOCATION OF CONTROLS, OPERATION CONTROL FUNCTIONS FRONT PANEL REAR PANEL. OPERATION PROCEDURE TO RECEIVE OPERATING PROCEDURE TO TRANSMIT, FREQUENCY RANGE ..
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio INTRODUCTION Congratulations on your purchase of the CHEROKEE NR-100 Citizen Band mobile radio. Your CHEROKEE radio is designed to provide trouble-free service and advanced user features to make it the premier choice in radio communications. THE CB STORY The Citizens Band dies between the short-wave 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.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio Wireless Marketing Corporation , 121. Output Indicators: CAVER TELL == SPECIFICATIONS GENERAL Frequency Range: 26.965MH2 to 27.405MHz (40 Channels) Frequency Control: Phase Looked Loop (PLL) Synthesizer Frequency Tolerance: 0.005% Frequency Stability: 0.001% Operating Temperature Range: 20 Degrees F to +120 Degrees F Microphone: Plug-in Dynamic: with push to talk switch & coiled cord Input Voltage: 13.8V DC nominal, 15.9V Max., 11.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio 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 passenger in the vehicle. In automobiles, the transceiver is usually mounted below the dash panel, with the microphone bracket beside it CONNECTIONS Your transceiver is supplied with a universal-mounting bracket.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio IGNITION NOISE INTERFERENCE Use of a mobile receiver at low signal level is limited by the presence of electrical noise. The primary source of noise in automobile installation is from the generator and ignition system in the vehicle. Under most operating conditions, when signal level is adequate, the background noise does not presents serious problem.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio TUNING THE ANTENNA FOR OPTIMUM SWR Since there is such a wide vanity of base and mobile antennas, this section will strictly concern itself to the various types of mobile adjustable antennas. Because the antenna length is directly related to the channel frequency, it must be tuned to resonate optimally on all 40 channels of the transceiver. CH1 requires a longer antenna than CHAT, because it is lower in frequency.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio All doors of the vehicle must be closed when adjusting the antenna. _ Make sure the antenna base is grounded. Check your coaxial cable routing to make sure it is not pinched when routed into the car. . Try a different location on your car, keeping in mind the radiation pattern you wish. _ Is the antenna perfectly vertical? Try a different location in your neighborhood. Stay away from large metal objects when adjusting.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio LOCATION OF CONTROLS [Terrorize) °o oo a ®OOO ON REAR PANEL MIC CONNECTOR 10. EL LIGHT DIMMER 19. EXT SPEAKER JACK MIC GAIN 11. CD LED INDICATOR 20. PA SPEAKER JACK RF GAIN 12. MODE SW (ACERBIC} 21 ANTENNA JACK CLEAR TUNE 13. CD SW (CDSICDT/NOR) SWR CAL 14. DIRECT CHANNEL SW ON/OFF VOLUME -SQ 15. JANELL SW CHANNEL SELECTOR 16. SWR SW (B/SWR/CAL} CHANNEL DISPLAY 17. INDICATOR METER RX/TXLED INDICATOR 18.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio OPERATION CONTROL FUNCTIONS FRONT PANEL 1. MICROPHONE JACK 4-pin, standard screw-on microphone connection. Front panel mounted for easy access. Must be connected to transmit. MIC GAIN Adjust the microphone gain in the transmit and PA modes. This controls the gain to extent that full talk power is available several inches away from the microphone. RF GAIN Used to reduce the gain of the RF amplifier under strong signal condition.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio 6. OFF/ON VOLUME (inner dual concentric) Turn clockwise to supply power to the unit and to set the desired listening level. During normal operation, the VOLUME control is used to adjust the audio output level obtained either at the radio's internal speaker of the external speaker, if used. Turn fully counterclockwise to turn the unit OFF.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio DRIVE” SWITCH (CDS/CDT/NOR) This switch is used to enable the “Clear Drive” audio commander circuit of the radio to provide clear and low noise communications between similarly equipped units CDS — “Clear Drive System” Makes full use of the Cam pander feature. Select this when both the transmitting unit and receiving unit are using Com pander.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio 20.PA SP Accepts 4 to 8 Ohms, § Watts PA loudspeaker, activates when PA mode is selected. 21.ANTENNA CONNECTOR Accepts type PL-259 RF plug. To be connected to a MHz 50 Ohms antenna through a 50 Ohms coaxial cable. OPERATION PROCEDURE TO RECEIVE 1. Be sure that power supply, microphone and antenna are properly connected before turning on the radio. Turn the radio ON by rotating the Volume control clockwise.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio FREQUENCY RANGE The NR-100 transceiver represents one of the most advanced mobile radio in the Citizens Radio Service. This unit features advanced Phase Lock Loop (PLL) circuitry providing complete coverage of all 40 channels as shown below. cB Channel Freq. cB Channel Freq. Channel in MHz Channel in MHz 1 26.965 21 27.215 2 26.975 22 27.225 3 26.985 23 27.265 4 27.005 24 27.235 5 27.015 25 27.245 6 27.025 26 27.265 7 27.035 27 27.27% 8 27.055 28 27.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio COMMANDER OPERATION NR-100 radios are equipped with an audio commander circuit to enhance audio performance. The circuit is ON when the “Clear Drive.” Switch on the front panel is sett “CDS” or “CDT. The Com pander comprised of two circuits, a Compressor for transmit audio and an Expanded for received audio.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio 10 CODES AND THEIR MEANING 10-1 Receiving poorly 10-37 Wrecker needed at 10-2 Receiving well 10-38 Ambulance needed at 10-3 Stop transmitting 10-38 Your messaged delivered 10-4 OK, message received 10-41 Please turn to channel 10-5 Relay message 10-42 Traffic accident at 10-6 Busy, stand by 10-43 Traffic tie up at 10-7 Out of service, leaving air 10-44 | have a message for you 10-8 In service, subject to call 10-45 All units within range please 10-9 Rep
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio A Few Rules That Should Be Obeyed 1. 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. You are not allowed to use profanity.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio MAINTENANCE AND ADJUSTMENT The Cherokee NR-100 transceiver is specifically designed for the environment encountered in a mobile installation. Should a failure occur, however, replace parts only with identical parts. Do not substitute. Refer to the schematic diagram and parts list in the Service Manual. If problem occurs when operating your radio, review the operating instruction ta ensure that proper procedures were allowed.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio lengths to a minimum to avoid short circuit when the microphone plug is reassembled. MICROPHONE PLUG REASSEMBLING Remove the retaining screw. Unscrew the housing from the pin receptacle body Loosen the two cable clamp retainer screws Feed the microphone cable through the housing. Knurled ring and washers as shown in Figure 3. The wires must now be soldered to the pins as indicated in Figure 1. Wiring table.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio ALTERNATE MICROPHONES SCHEMATIC. FIG.1 Your transceiver microphone wiring schematic. we 4 Wire Mic.Cable Pin Number : . AF shield AF lead TX control Rx control Mic Cable Lead FIG. 2 Mic plug pin number viewed from rear of pin receptacle FIG.3 Microphone pig wiring. RETAINING SCREW A. MICROPHONE CONNECTOR ASSEMBLY WASHER =a 8.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio WARRANTY Limited One Year Warranty WIRELESS MARKETING CORPORATION warrants that its Cherokee citizens band (CB) radio, and the component parts thereof, will be free of defects in workmanship and materials for period of one (1) year 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 USA.
OPERATING MANUAL NR-100 40-Channels Citizen Band Radio For additional information about your new CB radio: call the toll free Cherokee Consumer Information Hotlink, Monday Friday, 8:00am5:00pm, CST. (Please have the model and serial number ready) 1-800-259-0959 (In the U.S. and Canada ONLY) If You Think You Need Service, Call 1-800-259-0959 You may be asked to send your unit to the Cherokee factory. it will be necessary to furnish the following, in order to have the product serviced and returned. |.
NR100 40-Channels Citizen Band Radio SERVICE MANUAL TABLE OF CONTENTS CONTENT TABLE OF CONTENTS + REVISION NOTES! MODEL NUMBERS SPECIFICATIONS covenants GENERAL TRANSMITTER RECEIVER... THEORY OF OPERATION INTRODUCTION FREQUENCY GEN A. 8. 10.695MHZ SECOND OF C FREQUENCY CALCULATIONS 1) Transmitter Operation. 2) Receiver Operation CIRCUIT DESCRIPTION Power Supplies Circuit TEMPORIZE ALIGNMENT PROCEDURE ...coven MEASUREMENT TEST EQUIPMENT / TOOLS REQUIRED.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio NR100 PCB LAYOUTS... NR100 CIRCUIT DIAGRAM BLOCK DIAGRAM AND SEMICONDUCTOR Revision Notes: Revision 0 First issue Y.0. Lung 16 Feb 1999 Model Numbers: NR100 40 Channels AM CB Radio with “Clear Drive” Com pander and E.L. Back Light Front Panel Wireless Marketing Corporation, 1212, Remington Road, Scumbag, 1160173.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio Front Panel illumination TRANSMITTER Power Output Modulation: Spurious Level: Frequency Response: Output impedance: Output Indicators: RECEIVER Sensitivity: Spurious Emission: Image Rejection: IF Frequency: Adjacent Channel Rejection: RF Gain Control: Automatic Gain Control (AG: Squelch: ANL: Noise Banker Audio Output Power: Audio Frequency Response: Built-in Loudspeaker: Textual Loudspeaker (Not Supplied).
SERVICE MANUAL NR100 40-Channels Citizen Band Radio THEORY OF OPERATION INTRODUCTION “The NR100 40 channels Citizen Band Mobile Transceiver is constructed with a Phase Locked Loop frequency synthesizer to generate suitable RF signals for the double conversion receiver and the AM transmitter circuits. The NR100 Block Diagram shall be used in associate with the following circuit description. FREQUENCY GENERATION A PLL CIRCUITRY PLL is an abbreviation of the Phase-Locked-Loop.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio 10.695MHZ SECOND OFFSET OSCILLATOR TR-30 is a crystal oscillator operates at a center frequency of 10.695MHz to provides off-set frequency to L44 of the Tx mixer (IC), which mixes with PLL VCO output to provide comet transmitting spot frequencies in AM operation. FREQUENCY CALCULATIONS The VCO frequency is obtained from the following calculation; couch = fores + Nf Where vocab COVE frequency. N = Programming Code for divider output.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio Two transistor switches TR and TR tums on and off under the control of IC4 (pin) to supply voltage to the transmitter and receiver circuits. The TWX LED will grow in red on transmit and green during receive. B.. Channel Selector The channel selector circuit is divided into two parts. The pulsed rotary encoder switch SW701 with the LED display and is driver circuits in one board.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio Receiver Circuits RF signal from the antenna is coupled to the receiver circuit by C43, the signal passes through a pair of PIN fast switching diodes (D15/16), which are biased with AGC and a fixed voltages to protect the receiver front end from transmitter output and other excessively strong signals. The signal is then amplified by a low noise SAMOSET (TR51), passes a band pass filter (L7 ~ L8) and mixed with the first local oscillator signal in TR.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio through an active three pole low pass filter (pins the Mic Gain control. All the excessive high frequency signals are suppressed by the fighter before transmission. The reference level of the compressor is set by R905 to around SmV microphone input. R901 is inserted into the circuit to obtain suitable modulation level. Received audio from the detector is sent fo pin 15 for amplification, and then 1o the internal Expanded circuit for audio processing.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio ALIGNMENT PROCEDURE MEASUREMENT CONDITION The following sections describes the alignment procedure for the NR100 mobile transceiver under following ‘reference environment conditions: Temperature: 25 Degrees C (77 Degrees F) Relative Humidity: 65% Power Supply Voltage: 13.8V 3% TEST EQUIPMENT / TOOLS REQUIRED The following list of equipment are recommended for use in setting up the radio properly.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio B. Second Offset Frequency Oscillator Check 10.695MHz [AM] 1. Connect frequency counter to PT-8 (C73/D27). 2. 10.695MHz AM operation: Set the mode selector to AM, and press PTT key switch to transmit, adjust £-26 to obtain 10.695MHz (+0, or -100Hz2) on the frequency counter. C. PLL Mixer IC Input Level Adjustment 1. Set the “Clear Tune” control to center position. Set channel selector Connect Oscilloscope to PT-4 between C-106 and L-50. 3.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio TRANSMITTER ALIGNMENT Note: Unless otherwise specified, adjust Mic Gain control on the front panel to fully clockwise position for all following tests. A Test Set-Up Set up test equipment with the NR100 radio as indicated below: 138vDC Power Supply Mic Jack DG Jack I RF Signal Generator Dual Tone 1. GND ons Modulation Meter Audio 2.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio E. Advanced Test Procedures for Modulation Following advanced fest procedure requires optional/advanced test equipment setup by experienced technical person, and is not normally required in a field repair environment i AM Modulation Monitor Apply kHz 50mV mms. AF signal to Microphone input connector pin 2 of the radio, and to the Y input (Usually marked as Time base) of the oscilloscope.
SERVICE MANUAL NR100 40-Channels Citizen Band Radio it) FCC Emission Limitation Check Set up equipment Modulation Monitor Test, Com pander OFF. Couple the Spectrum Analyzer input to the RF Dummy Load Apply 2.5KHz 50mV ms. audio tones signal to the Microphone input connector pin 2 Activate PTT to transmit, adjust AM Modulation level to 86% (see Fig iA). Observe on the Spectrum Analyzer that the Radio's RF output are within the FCC limits Repeal test with Com pander ON.
FCC ID: MGR-100 APPENDIX 7 CIRCUITS AND DEVICES TO STABILIZE FREQUENCY All 40 channels of transmitting, and receiving, frequencies are provided by PLL {Phase Locked Loop) circuitry. The purpose of the PLL is to provide a multiple number of frequencies from a VCO (Voltage controlled Oscillator) with quartz crystal accuracy and stability locked to crystal oscillator reference frequency. The reference crystal oscillator frequency is 10.24 MHz.
1. FCC ID: MGR-100 APPENDIX 8 ad fon Of ; literati The tuning circuit between the output of final amp Q603 and antenna, 4-stage PI: network consisting of L33, C166, C165, 1.62, C161, L6i, C160, L31, C158, C340, and L6&3 suppress spurious emissions. This network also serves to match the impedance between TX power amp and the antenna. AM Modulation Input from the microphone is controlled by the Mic-Gain potentiate VR505 and amplified by IC4.
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC145106D PLL Frequency Synthesizer COS The MC145106 is a phase-locked loop (PLL) frequency synthesizer constructed in COS on a single monolithic structure. This synthesizer finds applications in such areas as CB and FM transceivers. The device contains an oversimplification, a 210 or 211 divider chain for the oscillator signal, a programmable divider chain for the input signal, and a phase detector. The MC145108 has circuitry for a 10.
PIN ASSIGNMENTS PLASTIC DIP suppl 1® 18]l vg tonal 17{] Po 08Gip council 4 5] P2 +2040 8 rules Fell & 130) Ps Odets ols 11 [1 P8 Pall 8 ofl p7 S0G PACKAGE vpp vss fll BIN acquit [] 4 lie 2000] Bes outmoded I] 7 14 [1p4 wile 13 [INC Pele series ergo [lee NC = NO CONNECTION MAXIMUM RATINGS (Voltages Referenced 10 Vgs) This device contains circuitry to protect the Parameter Symbol Valve Unit Inputs against damage due to high static volt Dc Supply Foliage vpo -0510+12 v ages or electric eds; however, iris advis
ELECTRICAL CHARACTERISTICS (Ta = 25°C Unless Otherwise Stated, Voltages Referenced to Vag) vob All types Characteristic Symbol Vde Min Typ Wax Unit Power Supply Voltage Range VP Supply Current Input Voltage “0 Level “Level | vin input Current “0 Level Pu-Up Resistor Source Current) 150 —-200 -0.3 (FS) “1” Level Pull-Down Resistor Sink Current) 228 80 225 12 3¢ 120 300 {OBC fin} “0° Level 50 2.0 -6.0 -8.0 -37 -82 (Osgood, fir) “1” Level Output Drive Current oH mA (Vo=45V) Source =85V) =11.
TYPICAL CHARACTERISTICS* POSITIVE POWER SUPPLY fin, MAXIMUM FREQUENCY (MHz) Figure 1. Maximum Divider Input Frequency versus Supply Voltage SUPPLY VOLTAGE MAXIMUM FREQUENCY (MHz) Figure 2. Maximum Oscillator input Frequency versus Supply Voltage “ Data labeled “Typ” is not to be used for design purposes but is intended as an indication of the I's potential performance.
PLL SYNTHESIZER APPLICATIONS The MC145108 is well lusted for applications in CB radios because of the channelized frequency requirements, A typical 40 channel CB transceiver synthesizer, using a single crystal reference, is shown in Figure 3 for receiver IF values of 10.695 MHz and 455 kHz. In addition to applications in CB radios, the MC145106 can be used as a synthesizer for several other systems.
FCC ID: MGR-100 APPENDIX 10 FINAL RF AMPLIFIER DATA SHEETS THREE (3) PAGES FOR KTC2078 FOLLOW THIS SHEET FINAL RF AMP DATA SHEET FCC ID: MGR-100 APPENDIX 10 ws\wirnrioo
2S5C1969 Parts Specification Page 2/3 C.B. Mobile Transceiver NPN EPITHELIAL PLANAR TYPE TEST CIRCUIT wasps . m2 Sopping wm, a w 07.18 Zour=500 IT Hed 2200 to 110pF 10 1100F 1m 1 10p* 290 oF <1: BOF, Anapest, 22000, 100pF, 100F in parallel C1: * TOUGH Q.08F, K200F, 1009 in vermicelli Howe: Alf Col are mate from 1 OTe chive (a1 COOL Wits +e Coil dimensions in millimeter ©: inverter donate of coil T Town manner of Colt P Pike of got “CAL PERFORMANCE DATA COLLECTOR DISSIPATION VS. COLLECTOR CURRENT VS.
Parts Specification C.B. Mobile Transceiver 25C1969 TRITIUM ROWER Pp THIRD ORDER MODULATIONS DISTORTION MOD {ust “COLLECTOR GUTTY CAPACITANCE Cop (pf) COLLECTOR OUTPUT CAPACITANCE VS. COLLECTOR . TO BASE VOLTAGE CHARACTERISTICS zd Tomcat tm) v2 5 2030 30 19100 COLLECTOR 10 BASE VOLTAGE voy fv) OUTPUT POWER VS, COLLECTOR SUPPLY VOLTAGE » Ta=28'C P= #5) Vao wav ADJUSTMENT COLLECTION SURLY VOLTAGE Vee (V1 THIRD ORDER INTER MODULATION DISTORTION VE.