Instruction/ maintenance manual of the product TR-127GK/DX Ranger
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REV. A Dec. 2004 TR-127GK/DX 40 CHANNEL AM CB MOBILE RADIO Service Manual Communications, Inc..
- 1 - TR-127GK/DX TABLE OF CONTENTS PAGE CHAPTER 1 SPECIFICATIONS 1.0 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1 Transmitter . . . . . . . . . . . . . .
- 2 - 1.0 GENERAL Model TR-127GK, TR-127DX Channels 40 Frequency Range 26.965 – 27.405 MHz Emission Modes AM Frequency Control Phase Lock Loop (PLL) synthesizer Frequency Stability 0.001 % Operating Temperature Range -30 ° C to +50 ° C Antenna Impedance 50 Ohms Input Voltage 13.
- 3 - TR-127GK/DX CHAPTER 2 OPERATION Figure 2-1 Front Panel 2.0 INTRODUCTION This section explains the basic operating procedures for the T R-127 GK or TR-127DX mobile CB radio. 2.1 CONTROLS AND CONNECTIONS 2.1.1 FRONT PANEL Refer to the above Figure 2-1 for the location of the following controls.
- 4 - background noise is just eliminated. Further clockwise rotati on will increase the threshold level which a signal must overcom e in order to be hear d. Only strong signals will be heard at a maxim um clockwise setting. 5. RF GAIN CONTROL: This control is us ed to reduce the ga in of the RF (rece ive) amplifier und er strong signal conditions.
- 5 - REAR PANEL Figure 2-2 represents the location of the following connections: This devi ce complies wit h part 15 o f the FCC Rules. Operation is subject to the condition that t his device MADE IN CHI NA FCC ID : MEE−VX−129CN MODEL NO. : TR−1 27 AM 40 CH SERIAL NO.
- 6 - 2.1.3 FREQUENCY CHART CHANNEL CHANNEL FREQUENCY (MHz) CHANNEL CHANNEL FREQUENCY (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.
- 7 - 2.2 MICROPHONE The push-to-talk switch on the microphone controls th e receiver and transmitter. Press the switch and the transmitter is activated, re lease switch to receive. W hen transmitting, hold the microphone two inches from your mouth and speak clearly in a norma l voice.
- 8 - 2.4 ALTERNATE MICROPHONES AND INSTALLATION For best results, the user should select a low im pedance dynamic type microphone or a transistorized microphone. Transistorized type microphones have a low output im pedance characteristic. The microphones must be provided with a four-lead cab le.
- 9 - TR-127GK/DX CHAPTER 3 CIRCUIT DESCRIPTION 3.0 INTRODUCTION This section explains the technical theory of operation for the TR-127GK or TR-127DX mobile CB radio. 3.1 PLL CIRCUIT The Phase Lock Loop (PLL) circuit is responsible for developing the receiver’s first local o scillator signal and the transmitter’s exciter sig nal.
- 10 - Q23 Q27 Q28 15.48M Q6 - Q 8 1ST MIXER ANT RX Q12 RF AMP RF GAIN Q11 NB Q1 - Q5 Q13 AM/FM MIX Q14 C.F. 455KHz FL1 Q9,Q10,Q15 D2,3 AM IF AM DET SQ AF POWER IC1 IC3 L23 TX MIXER MIXER L.P.F TX POWER LOW PA SS PLL TX L21 GPS-668 ROTARY SW PLL CODE L12,13,14 FILTER OSC Q16 Q17 IC2 Q18 DRIVER DRIVER X2 10.
- 11 - TR-127GK/DX CHAPTER 4 ALIGNMENT 4.0 REQUIRED TEST EQUIPMENT c DC Power Supply (13.8VDC, 10A) d RF Wattmeter (10W ) e Multi-meter f Automatic Modulation Meter g Audio Signal Generator h Frequency Counter (100 MHz) i RF Signal Generator (100 MHz) j Automatic Distortion Meter k Oscilloscope (50 MHz) l Sinad Meter 4.
- 12 - 4.1.2 TRANSMITTER ALIGNMENT ITEM U.U.T. SETTING ADJUST POINT MEASUREMENT TX Power Set radio to CH 19 AM TX mode. Connect RF Power Meter to antenna jack. L26, L27, L18 MAX > 4W Balance Power Between CH. 1 - 40 AM TX Power Set radio to CH 19 AM TX mode.
- 13 - Figure 4-1 Transmitter test setup Figure 4-2 Receiver test setup.
- 14 - TR-127GK/DX MAIN PCB ADJUSTMENT LOCATION.
- 15 - TR-127GK/DX CHAPTER 5 MAINTENANCE 5.0 PRECAUTIONS The inherent quality of the solid-state components us ed in this transceiver will provide m any years of continuous use.
- 16 - TR-127GK/DX CHAPTER 6 DIAGRAMS & PARTS LIST 6.0 GENERAL Information on most electrical an d mechanical parts is included in the parts list. The ref erence designators are in alphanumeric order.
- 17 - TR-127GK/DX ROTARY SWITCH PCB (EPT092920Z) (SMD-COPPER SIDE) ( COMPONENT SIDE ).
- 18 - PART LIST: TR-127GK/DX ROTARY SW. P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 1 EPT012921Z ROTARY SW PCB 2 R305 RCY010004Z CHIP/F/R 0.0 Ω 0.1W 3 R306 RCY013314Z CHIP/F/R 330 Ω 0.1W 4 R307,R308,R309,R310, R311,R312,R313,R314, R315,R316,R317,R318, RCY016814Z CHIP/F/R 680 Ω 0.
- 19 - TR-127GK/DX DISPLAY PCB (EPT092930Z) ( COMPONENT SIDE ) ( COMPONENT SIDE ) ( COPPER SIDE ).
- 20 - PART LIST: TR-127GK/DX DISPLAY P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 1 EPT012930Z DISPLAY PCB 2 D201 EX01Y40004 LED 3mm RED/GREEN 3 LED DISPLAY EX03N40016 LED DISPLAY GREEN.
- 21 - TR-127GK/DX MAIN PCB (EPT012910A) ( COMPONENTS SIDE ).
- 22 - TR-127GK/DX MAIN PCB (EPT012910A) ( COPPER SIDE ).
- 23 - PART LIST TR−127GK/DX MAIN PCB REFERENCE NUMBER RANGER PART NO. DESCRIPTION EPT012910Z MAIN PCB R131,132 RCM160004Z 0 Ω 1/16W R56,62 RCM161094Z 1 Ω 1/16W R107 RCM162294Z 2.
- 1 - TR3,5,9,10,11, 15,19,21 T2SC00945P 2SC945P TR4,20,22,24 T2SA00733P 2SA733P TR12 T2SC01674L 2SC1674L TR13 F2SK00192L 2SK192ABL TR14 F2SK00192R 2SK192A-GR TR16 T2SC02078D 2SC2078D TR17,28 T2SC0231.
TR-127GK/DX SCHEMATIC DIAGRAM.
45 5 8 4 9 6 3 2 51 7 1 67 68 10 65 66 50 52 52 49 12 11 43 44 42 70 63 14 55 13 29 27 46 47 54 41 40 64 53 58 20 28 26 VR 50KB/50KA/SW (VOL/SQ) 1 RV50303602 46 19 34 25 56 29 32 INSULATING PLATE 13*18*0.
45 5 8 4 9 6 3 2 51 7 1 67 68 10 65 66 50 52 52 49 12 11 43 44 42 70 63 14 55 13 29 27 46 47 54 41 40 64 53 58 20 28 26 VR 50KB/50KA/SW (VOL/SQ) 1 RV50303602 46 19 34 25 56 29 32 INSULATING PLATE 13*18*0.
AT0127040A COPYRIGHT 2004, Ranger Communications, Inc. Communications, I nc..
An important point after buying a device Ranger TR-127GK/DX (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Ranger TR-127GK/DX yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Ranger TR-127GK/DX - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ranger TR-127GK/DX you will learn all the available features of the product, as well as information on its operation. The information that you get Ranger TR-127GK/DX will certainly help you make a decision on the purchase.
If you already are a holder of Ranger TR-127GK/DX, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Ranger TR-127GK/DX.
However, one of the most important roles played by the user manual is to help in solving problems with Ranger TR-127GK/DX. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ranger TR-127GK/DX along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
