User's Manual
Table Of Contents
- Introduction
- Safety Information
- Operation
- Buttons
- Main Screens
- Site Configuration Tools
- Two-Way Paging
- Configuration Methods
- MENU Configuration
- Serial Command Configuration
- Protocols
- SCADA Support
- IO Mirror Operation
- Input Handling
- Output Handling
- WTE Output Control Protocol
- WTE Ack and Confirm Protocol
- Store Forward Operation
- Installation
- Input Output Hardware Connection
- Serial Connections
- RF Connections
- Power Connections
- Ethernet Interface
- TReX Firmware Upgrade
- Physical Dimensions
- Mounting Hardware
- Omni or Directional Antenna
- Antenna Elevation
- Disclaimer
- Manufacturing marking and labels
- Maintenance
- Product End Of Life
- Product Warranty
- Abbreviations and Glossary
- Specifications
TReX User Manual v2.14 Firmware
Omni or Directional Antenna
It is common in radio systems to consider an omni or directional antenna. Both have their
advantages and disadvantages as follows.
If in doubt, consult a local antenna specialist who will be able to advise and construct an
antenna best suited to your application.
Omni antenna
Omni antenna have the advantage of transmitting and receiving signals equally well in all
horizontal directions. This means that if the transmitter or the receiver moves, the antenna will
not need to be changed/adjusted to compensate.
This is the common antenna used in cellular phones and handhelds radios.
Directional antenna
Directional antenna have the ability to focus energy in a particular direction. This advantage
increasing the maximum distance between transmitter and receiver units. Since the signals are
focused/concentrated into a direction it also increase the overall performance of the system.
This is mainly used for fixed transmitter and receiver locations.
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