The document proposes an underground mine communication system with the following key elements: 1) A control center (master) to manage wireless communications within the mine tunnels. 2) Handheld radios for miners to communicate with the control center. 3) Repeater stations every 700 meters using line amplifiers to extend the wireless range. 4) Additional middle control centers (slaves) further into the mine at 3.5km, 10.5km, and 18km points. 5) A combination of leaky coaxial cable (LCX) and fiber optic cable to connect the components. The total proposed cost is $126,000 USD.

1. Underground Mine Communications
System Proposal
March 29th, 2011
Proposed by

2. CONTENTS
• Introduction
• Underground Mine
Communication System Solution
• Quotation

3. Introduction

4. Under g round Mine Communication
System
Underground Mine Communication System
• Industrial Underground Mine Communication System provides
effective way of wireless communication for the inside of mine
tunnel with LCX cable and fiber optic with repeater solution.
Sorts of Mine

5. Underground Mine
Communication System

6. Underground Mine Communication System Block Diagram
1. Control Center (Master)
2. Hand held Radio
3. Line Amp.
700M
6. LCX Cable
5. Optic Cable
Digital Broadcasting with you
4. Middle control Center (Slave 3.5km)

7. Underground Mine Communication System Package
1. Control Center
 Command Radio
 Optic Master System
2. Hand Held Radio
 420MHz ~ 470MHz
 Ch. No : 512
 16 Group Call
3. Line Amp
 Bi-directional Amplifying System
 Installation every 700M
4. Middle control Center
 Optic Slave System
 Installation 3.5Km, 10,5Km, 18KM
5. Optic Cable
6. LCX Cable
 Leaky Coaxial Cable
 22D Digital Broadcasting with you

8. Quotation

9. Quotation
Unit Price
I T E M Quantity Total Price
(US$)
Command Radio 1 set 2,000 2,000
1. Control
Center
Radio Master System 1 set 15,000 15,000
2. Handheld
450 Radio Set 20 set 600 12,000
Radio
Bi-Directional Amplifying
3. Line Amp. 5 set 10,000 50,000
system
4. Middle
Optic Slave System 1 set 15,000 15,000
Control Center
장비비 8,000
5. Optic Cable
Sm2c, 부속자재일절 15,000
옵션
Lcx 케이블 , 콘넥타 , 분배기 등등 3500m 35,000
6. LCX Cable 인건비 1식 12,000
Grand Total 126,000 US$