4RF Aprisa SR+ User Manual - page 107
Managing the Radio | 105
Aprisa SR+ User Manual 1.5.3
MODEM
The Radio > Radio Setup screen Modem section is different for a base / repeater / base-repeater station
and a remote station.
Modem Mode
This parameter sets the Modem Mode in the radio. The Modem Mode option list is dependent on the radio
Hardware Variant.
HW Variant
Option
Channel Sizes
136 MHz
Mode A (FCC / IC)
15 and 30 kHz
Mode B (ETSI)
12.5 and 25 kHz
220 MHz
Mode A (FCC / IC)
12.5, 15, 25 and 50 kHz
320 MHz
Mode A (ETSI / ACMA)
12.5, 20, 25 and 50 kHz
400 MHz
Mode A (ETSI / ACMA)
12.5, 20 and 25 kHz
Mode B (FCC / IC)
12.5 and 25 kHz
450 MHz
Mode A (ETSI / ACMA)
12.5 and 25 kHz
Mode B (FCC)
12.5 and 25 kHz
896 MHz
Mode A (FCC / IC)
12.5, 25 and 50 kHz
Mode B (FCC Part 24)
12.5, 25 and 50 kHz
Mode C (IC RSS-134)
12.5, 25 and 50 kHz
928 MHz
Mode A (FCC)
12.5, 25 and 50 kHz
Mode B (IC)
12.5, 25 and 50 kHz
Mode C (FCC Part 24)
12.5, 25 and 50 kHz
Mode D (IC RSS-134)
12.5, 25 and 50 kHz
Enhanced Noise Rejection Mode
This parameter enables / disables the Enhanced Noise Rejection Mode in the radio. This feature improves
co-channel interference performance at strong receiver signal levels. All radios in an Aprisa SR+ network
must use the same setting i.e. enabled or disabled.
The default setting is Disabled.