4RF Aprisa SR+ User Manual - page 82
Managing the Radio | 79
Aprisa SR User Manual
Radio > Basic
Note: Transmit frequency, transmit power and channel size would normally be defined by a local
regulatory body and licensed to a particular user. Refer to your site license details when setting these
fields.
RF SETTINGS
Important:
1. Changing the Remote / Repeater Station frequencies will disable all management communication to the
Remote / Repeater Stations but then by changing the Base Station to match the Remote / Repeater
Stations, the radio links will be restored as will the management communication.
2. Enter the TX frequency and the RX frequency and then click ‘Save’. This is to prevent remote
management communication from being lost before both frequencies have been changed in the Remote
Stations.
TX and RX Frequencies.
The TX and RX frequencies entered must be within the frequency tuning range of the product frequency
band and will be automatically resolved to the synthesizer step size for the frequency band e.g. an ETSI
400 MHz band frequency entry of 458,004,000 Hz will be changed to 458,006,250 Hz (see ‘Frequency
Bands’ on page 148). The default setting is 400,000,000 Hz.
The TX and RX frequencies can be single frequency ½ duplex or dual frequency ½ duplex. Dual frequency
½ duplex is often used for reasons of:
Channel Planning.
Network Efficiencies.
Regulatory rules.