User's Manual
Table Of Contents
- About This Manual
- System Description
- Mobile Equipment System
- Repeater System
- Base Station
- System Installation and Checkout
- User Interface
- Acronyms
- Radio Module Specifications
- General Description
- Functional Specifications
- FCC Items
- Channel Definitions
- Power and Distance
- Photographs
- DSSS Channels and Regulations
- EL Antenna Pattern
- AZ Antenna Pattern
8 Spread Spectrum Radio System User’s Manual
March 2001
• a solar power system with backup batteries and surge
protection
• an ac-to-dc power system with surge protection
• GPS capability
A repeater with optional solar panel and wheels is configured
similarly to the following example:
Figure 4 Example Mobile Repeater
Hub Like the Hub on the mobile equipment, the repeater Hub is made of
cast aluminum that has been anodized and enameled. It is also the
same size as the mobile equipment Hub but is mounted inside an
environmental enclosure that is 50.8 by 40.6 by 20.3 centimeters (20
by 16 by 8 inches) and made of powder-coated 14-gage steel.
An access door is provided on the front of this NEMA enclosure, and
holes for the antenna coaxial cables and power are provided in the
rear. The enclosure also contains surge suppressors—on the incoming