HYT TR-50 Service Manual
  1. Manuals
  2. Brands
  3. HYT Manuals
  4. Repeater
  5. TR-50 Series
  6. Service manual
HYT TR-50 Service Manual

HYT TR-50 Service Manual

Portable repeater
Hide thumbs Also See for TR-50:
Table of Contents

Advertisement

Quick Links

P O R T A B L E R E P E A T E R
TR-50

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TR-50 and is the answer not in the manual?

Questions and answers

Related Manuals for HYT TR-50

Summary of Contents for HYT TR-50

  • Page 1 P O R T A B L E R E P E A T E R TR-50...

  • Page 2: Table Of Contents

    Contents General……………………………………………………………………………..1 Brief Introduction…………………………………………………………………..2 Theory of Operation………………………………………………………………4 Alignment & Calibration…………………………………………………………..6 Part List 1………………………………………………………………………….9 Assembly and Disassembly for Repair………………………………………11 Exploded View……………………………………………………………………12 Part List 2…………………………………………………………………………13 Packing……………………………………………………………………………14 PCB Board View…………………………………………………………………15 Schematic Diagram……………………………………………………………...17 Specifications…………………………………………………………………….19...

  • Page 3: General

    TR-50 General General Manual Scope This manual is intended for use by experienced technicians familiar with similar types of communication equipment. It contains all service information required for the equipment and is current as of the publication date. User Safety Information...

  • Page 4: Brief Introduction

    TR-50 Brief Introduction Brief Introduction 1. LED Indicator The following table indicates LED indication and corresponding radio status. Status Power on Green Receive (or in battery save mode) Blue Transmit 2. Power /Volume Control Knob Rotate the Power/Volume Control Knob clockwise until a “click” is heard to turn the repeater on. Then the LED turns red when the power is on.
  • Page 5 TR-50 Brief Introduction 7. AC Power Inlet After correctly connecting AC power supply, turn on the switch to enter AC power supply mode. 8. AC Power Switch 9. DC Power Inlet The float charging function will operate in AC power supply mode with external gel cell batteries connected.

  • Page 6: Theory Of Operation

    VR3 is used to adjust the receive audio output to the proper level for transmit audio deviation. III. Float Charging Function The TR-50 provides selectable AC (100-240V ac) power supply. Normally users can equip battery back-up system connected to the external DC jack with floating charge function in the mean time. This provides auto-revert to DC battery once the AC mains fails.
  • Page 7 TR-50 Theory of Operation V. AF Amplification The receive audio is routed to another AF amplifier NJM386M, which is convenient for the users to monitor the activities of current channel. VI. Definition for control ports The definition of all the pins goes as follows: 1.

  • Page 8: Alignment & Calibration

    TR-50 Alignment & Calibration Alignment & Calibration I. Required Test Instrument DC power supply 1 set 1） Output range: 12~15 VDC (Minimum); output current: 3 A or more 2） Specified output: 13.8 VDC 3） The output should be stable, with minimal ripple & noise.
  • Page 9 TR-50 Alignment & Calibration 3. Relay Component (Note: Before adjustment, make sure the antenna (dummy load) are properly connected and space-isolated) Measurement Adjustment Specification/ Item Condition Test Test Part Method Remarks Instrument Point Receiver: 455.0125MHz 455.0125MHz CTCSS：67.0Hz PC operation system: 455.0125MHz...
  • Page 10 TR-50 Alignment & Calibration Sensitivity squelch on Turn to CH1, transceiver: BPF:0. Duplex and operate -119±3dBm 3~3KHz Antenna Check sensitivity in duplex AF OUT: mode Sensitivity squelch 1KHz/150mV off: -120±3dBm - 8 -...

  • Page 11: Part List 1

    TR-50 Part List 1 TR-50 Part List 1 Part No. Description Ref. Symbol. Location Sum. 01031002 Resistor 0603 10Ω J 01033932 Resistor 0603 39KΩ J 01051022 Resistor 0805 1KΩ J 01051032 Resistor 0805 10KΩ J 01051032 Resistor 0805 10KΩ J 01051032 Resistor 0805 10KΩ...
  • Page 12 TR-50 Part List 1 1206 T0610155 TMCSA1A155MTR.1.5UF/10V.M Ta-capacitor1206 T0616106 TMCMA1C106MTR 10uF 16V Ta-capacitor1206 T0616106 TMCMA1C106MTR 10uF 16V Ta-capacitor1206 T0635104 TMCSA1V104MTR.0.1uF 35V.M - 10 -...

  • Page 13: Assembly And Disassembly For Repair

    TR-50 Assembly and Disassembly for Repair Assembly and Disassembly for Repair Disassemble the main unit 1. Remove with tool the four screws on the rear side of main unit, and the four on the bottom of the main unit together with the rubber gasket. Pull out the outer cover.

  • Page 14: Exploded View

    TR-50 Exploded View Exploded View - 12 -...

  • Page 15: Part List 2

    TR-50 Part List 2 Part List 2 Material Name Material No. 14090360 M3×6 Screw (zinc-plated, black) 1413200A TR50 Cover 1613000A TR50 Rubber foot mat 14090360 M3×6 Screw ( zinc-plated, black) 14090420 Screw M4×20 19130030 Fan 12V 0.17A 14052010 Machine Screw M2×10 (zinc-plated, color)

  • Page 16: Packing

    TR-50 Packing Packing - 14 -...

  • Page 17: Pcb Board View

    TR-50 PC Board View (Top Layer)
  • Page 18 TR-50 PC Board View (Bottom Layer)

  • Page 19: Schematic Diagram

    TR-50 Schematic Diagram (RIC) R11 10K VR3 47K RX AF OUT ETxD DTC114EUA ERxD 12Ω ATxD RLED- ARxD 0.47uF CON4 0Ω RLED+ 12Ω TLED- 12Ω RJ45 EXT. TLED+ CON10 EXT MIC BAV70 MMBT3906 EXT PTT 1.2K 10K(47K) 12Ω 10Ω 12Ω...
  • Page 20 TR-50 Schematic Diagram (Power Management Board) DC 13.8V LM317T 0.22Ω/2W PSS8550D VOUT CON2 CON3 KBPC606 470pF 270Ω 470pF CON3 0.1uF 1.5uF/10V Q2 MMBT3906 1KΩ/2W 470Ω BAW56 2SB798 10K 负温 9.1V / 1A 470p CON2 5.1K BAV70 470p IC1 HT7050A CONN SOCKET 3x2...

  • Page 21: Specifications

    TR-50 Specifications Specifications 146.0000MHz-174.0000MHz Frequency Range 440.0000MHz-470.0000MHz Channel Frequency Capacity ≤±5PPM Valid Transmit Power ≤5W Transmitter Spurious Radiation ≤50uW Modulation Limit ± 5.0KHz Occupied Bandwidth ≤8.5KHz Adjacent Channel Power Rejection ≥55dB Modulation AF Distortion ≤5% ≤0.3uV (12dB SINAD) Receive Sensitivity Co-channel Rejection ≥-8dB...

Table of Contents