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▒ Characteristics

· Full Duplex Voice Conversation & Full Duplex Data
  Communication Available
· Half Duplex Voice Conversation & Half Duplex Data
  Communication   Available
· Propagation environment Experiment Available under
  simultaneous function of multi set
· Separate Unit Experiment and Full Product Practice
  Operating in one System
· Selective Experiment of Auto Mode and Manual Mode Available
· Built-in Software equal to Those in Commercial Products
· Operating Like Commercial Mobile Communication Products
  under Auto Mode
· LED Indicator Function
· Over Charge Protection Function

▒ System

This product is training equipment capable of full duplex radio communication developed to provide students in Communication or Electronic Engineering major with theory and practical experience in radio and mobile communication.
This stand-alone equipment combining both hardware and software is able to carry out single board level experiment and a set experiment based on full board connection as well as a propagation environment experiment based on simultaneous usage of several products.
Under automatic mode, it provides same conversation quality as commercial products in the market and is expected to lead students quickly settle into work environment on graduation.

▒ Specifications

Item	Specification

RF

Communication Method	Full Duplex / Half Duplex
Channel Access	Multi Channel Access
Frequency Range	Base	46.51 ~ 46.97 [MHz]
	Remote	49.67 ~ 49.99 [MHz]
Channels	15 Duplex Channels
Output Power	+4.5 [dBm] Max
Bandwidth/Channel	25 [KHz]
Modulation	FM
Frequency Stability	≤± 5 [ppm]
Receiving Sensitivity	Over 20dB SINAD (at -100 [dBm])
Auto Channel Scan Time	≤ 200 [ms]

▒ Experiment Phase

1) Board Unit Module Experiment : Power, Audio, Control Unit, Radio Unit, Precision Experiment
2) Half Duplex Audio and Data Experiment : Half Duplex Transmitting and Receiving Experiment
3) Full Duplex Audio and Data Experiment : Full Duplex Communication Experiment
4) Propagation Environment Experiment : Propagation Interference Experiment Among Systems

▒ Training Contents

Part 1. Introduction
  Experiment 1. Introduction to Full Duplex Mobile Communication Practice Equipment
  Experiment 2. Power Supply

Part 2. Audio
  Experiment 3. Condenser Mike and Input Signal Limiter
  Experiment 4. Compressor
  Experiment 5. Pre-emphasis and De-emphasis
  Experiment 6. Expander
  Experiment 7. Band-Pass Filter and Squelch Circuit

Part 3. Radio Frequency
  Experiment 8. PLL Oscillation I
  Experiment 9. PLL Oscillation II
  Experiment 10. Transmitter
  Experiment 11. Receiver

Part 4. Controller
  Experiment 12. Microcomputer Peripheral Circuit and Key Matrix Control Peripheral Circuit

Part 5. Full Duplex Communication
  Experiment 13. Half Duplex Transmitting Coordination Experiment
  Experiment 14. Half Duplex Receiving Coordination Experiment
  Experiment 15. Full Duplex Coordination Experiment
  Experiment 16. Propagation Environment Experiment

▒ Components

· Main PBA 2 Sets [8 PBAs]
· Carrying Bag 1 Set (2 [EA])
· Handset 1 Set (2 [EA])
· Adapter 1 Set (2 [EA])
· Text Book 1 [EA]
· Program CD (Multi-media CD) 1 [EA]
· RF coaxial cable 1 Set(2 [EA])