User's Manual

TS4000 Radio Modem User’s Manual Radio Setup 21
Radio Setup
The radio setup requires setting the modem configuration options and also
setting the radio frequencies. The modem configuration options are accessed on
the Radio tab of the Modem Configuration. The frequency programming is
accessed with the Frequency Configuration button on the main screen of the
configuration program.
The radio configuration options set the operation of the radio. These
configuration options are set using the Radio tab of the Modem Configuration
portion of the configuration program.
Selection Description
Occupied
Bandwidth
The occupied bandwidth sets the amount of frequency
bandwidth that the transmitted signal will use. A higher value
corresponds to more bandwidth and therefore provides better
BER (Bit Error Rate) performance.
The occupied bandwidth must be set to equal to or lower than
the occupied bandwidth that is allowed for the channels in
use.
For operation in FCC jurisdictions, the occupied
bandwidth is fixed (not user configurable) at 11.2KHz
which is the maximum bandwidth allowed for 12.5KHz
channels.
GMSK (BT=0.3) Gaussian Minimum Shifted Keyed modulation with a BT =
0.3.
This is more spectrally efficient than GSMK (BT=0.5)
modulation.
Configuration
Options
Modulation