Operating instructions

12 1892 1344 - SX450G Transceiver Operator Guide v1.7 / Nov 2007
When in this mode, the unit operates on the channel most recently selected in serial
mode. This setting is remembered during unit power off and any period of parallel
channel selection.
One way to send such a byte is to use a terminal such as a VT100 or emulator. Appendix
3 on page 28 shows the keystrokes necessary to generate the appropriate binary codes
for channels 0 to 127.
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