4RF Aprisa SR+ - Page 136

136 | Managing the Radio
Aprisa SR+ User Manual 1.11.1
MODEM
The Radio > Radio Setup screen Modem section is different for a base / repeater / base-repeater station
and a remote radio.
Modem Mode
This parameter sets the Modem Mode in the radio. The Modem Mode option list is dependent on the radio
hardware frequency band variant (see ‘Terminal > Details’ on page 109).
HW Variant
Option
Channel Size
kHz
Symbol Rate
ksps
135 MHz
Mode A (FCC / ISED)
50
36
30
16
15
9
Mode B (ETSI / ACMA)
50
36
25
20
12.5
10
Mode C
50
36
25
20
12.5
8
220 MHz
Mode A (FCC / ISED)
50
36
25
16
15
10
12.5
9
320 MHz
Mode A (ETSI / ACMA)
50
36
25
20
20
14
12.5
10
400 MHz
Mode A (ETSI / ACMA)
50
36
25
20
20
14
12.5
10
Mode B (FCC / ISED)
50
36
25
16
12.5
9
Mode C
50
36
25
20
12.5
8
450 MHz
Mode A (ETSI / ACMA)
50
36
25
20
12.5
10
Mode B (FCC)
50
36
25
16
12.5
9
700 MHz
Mode A (FCC Part 27)
50
40
25
20
12.5
10