Operating instructions

14 1892 1210 - ST500 Transmitter Operating Instructions - v2.12 / May 2007
RANGE INFORMATION
The following table gives an indication of the typical ranges to be expected between a
transmitter and receiver that have simple end-fed dipole antennas.
The following assumptions have been made in the calculations:
line-of-sight between antennas
0dB gain for the transmitter and receiver antennas
0dB loss for connectors and cables between the antenna and the radio connector
20dB fade and environmental margin
-100dBm received signal strength, allowing for digital and analogue signals
Range versus TX power
Frequency (MHz) Power (mW) Power (dBm) Range (km)
458.5 1mW 0 0.5
458.5 10mW 10 1.7
458.5 100mW 20 5.3
458.5 500mW 27 11.9