Raddy RF919 - Bandwidth and Demodulation

Extended Manual for RF919 v2.1
© 2024 page 36 of 63
7.3.11 Select bandwidth
In receive mode, short press [ ] to select the bandwidth (BW) of every band.
Short press [ ], “BW” flashes on the primary screen. Short press [ ], then the
numbers change in turn. Wait for 2 seconds, then the final selection will become
the default one.
The following table lists the possible bandwidths depending on the selected band:
LW
MW
SW (AM)
SW (SSB)
CB
1.0 kHz
1.8 kHz
2.0 kHz
2.5 kHz
3.0 kHz
4.0 kHz
6.0 kHz
1.0 kHz
1.8 kHz
2.0 kHz
2.5 kHz
3.0 kHz
4.0 kHz
6.0 kHz
1.0 kHz
1.8 kHz
2.0 kHz
2.5 kHz
3.0 kHz
4.0 kHz
6.0 kHz
0.50 kHz,
1.00 kHz,
1.20 kHz,
2.20 kHz,
3.00 kHz,
4.00 kHz
1.0 kHz
1.8 kHz
2.0 kHz
2.5 kHz
3.0 kHz
4.0 kHz
6.0 kHz
FM
AIR
VHF
WB
UHF
110 kHz
84 kHz
60 kHz
40 kHz
1.0 kHz
1.8 kHz
2.0 kHz
2.5 kHz
3.0 kHz
4.0 kHz
6.0 kHz
1.7 kHz
2.0 kHz
2.5 kHz
3.0 kHz
3.75 kHz
4.0 kHz
4.25 kHz
4.50 kHz
3.0 kHz
1.7 kHz
2.0 kHz
2.5 kHz
3.0 kHz
3.75 kHz
4.0 kHz
4.25 kHz
4.50 kHz
7.3.12 SW Demodulation types
In SW receive mode, the RF919 supports three demodulation types:
AM (Amplitude Modulation), LSB (Lower Side Band) and USB (Upper Side Band).
• In SW receive mode, with normal AM demodulation being active, long press
[ ] for 2 seconds “AM” flashes on the primary screen. Now, within 2 seconds,
short press [ ] and “USB” flashes and “ ” will be scrolling indicating it is
searching. About 2 seconds later, it will have switched to Upper Side Band (USB)
demodulation.
• When USB demodulation is active, long press[ ] for 2 seconds, then “USB”
flashes. Now short press [ ] again to switch to Lower Side Band (LSB)
demodulation.
• When LSB demodulation is active, long press[ ] for 2 seconds, then “LSB”
flashes. Now short press [ ] again to switch to normal Amplitude Modulation
(AM).