User's Manual
Table Of Contents
- Introduction
- Safety Information
- Operation
- Configuration
- Protocols
- Serial Point to Point Operation
- Input Handling
- Output Handling
- WTE Output Control Protocol
- Store Forward Operation
- Installation
- MReX Firmware Upgrade
- Antenna
- Disclaimer
- Manufacturing marking and labels
- Maintenance
- Product End Of Life
- Product Warranty
- Specification
MReX Transceiver User Manual v1.92 Firmware
Where:
D
is the distance to the horizon in NM,
r
0
is the mean radius of the earth (3440.1 NM),
h
f
is the height of your antenna,
β
0
(0.8279) accounts for terrestrial refraction.
This formula can be simplified to:
d=1.17∗
√
h
f
Where:
d
= range in nautical miles,
h
f
= the height of your antenna in feet.
Working with metric units this formula becomes:
km=2.17∗
√
0.305∗h
m
Where:
km
= range in kilometres,
h
m
= the height of your antenna in metres.
Therefore:
Antenna Elevation (metres) Clear Line of Sight Distance (km)
1 1.2
5 2.7
100 12
The Antenna Elevation is the combined elevation of both the transmitter and the receiver (transmit-
ter at 1m and receiver at 9m will behave similarly as the transmitter at 5m and receiver at 5m.
Changes in power level will help to address a less than ideal antenna or poor line of sight condi-
tions.
When line of sight or elevation is poor, the range can also be approximately doubled with every
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