6.11 Transmission
Speed
Transmission speeds can be configured to either 5K Bits/sec or 10K Bits/Sec by typing F for
fast or S for slow. This speed is independent of the baud rate. It is recommended that the
baud rate and transmission speed should be as close to each other as possible.
F = 10K Bits/Sec
S = 5K Bits/Sec
A transmission rate of 5K bits/sec is recommended if maximum range is required.
7.0 RADIO
TRANSMISSION
7.1 Radio
Frequency
7.1.1DIL Switch Settings X7200HP
DIL
RF Frequency
RF Power
0 173.175MHZ
1W
1 173.150MHZ
1W
2 173.125MHZ
1W
3 173.100MHZ
1W
4 173.075MHZ
1W
5 173.050MHZ
1W
6 173.025MHZ
1W
7 173.000MHZ
1W
8 173.175MHZ
5W
9 173.150MHZ
5W
A 173.125MHZ
5W
B 173.100MHZ
5W
C 173.075MHZ
5W
D 173.050MHZ
5W
E 173.025MHZ
5W
F 173.000MHZ
5W
7.3 Radio
Propagation
When installing a X7200 Radio Modem there are a number of factors that should be
considered as they will affect the performance of the radio link. These are:
Transmitter power output.
Sensitivity of the receiver.
Height of transmitter and receiver antenna.
Length and type of the coaxial feeder cables to the antenna. These should be low loss
RU67 type and kept as short as possible. As a rule of thumb the RF power is halved
every 10m of antenna feeder. It is better to keep the signal wire long and the antenna
feeder short.
Type of Antenna used.
Surrounding
Topography.
Interference for other networks operating on the same frequency.
The Weather.
