T X 3 5 5 0 S
I N S T R U C T I O N M A N UA L
PA G E 1 1
BANDWIDTH FILTER SETTINGS
To accommodate the blending of newer 80 channel
narrowband UHF radios with the original 40 channel
wideband radios, your radio has been fitted with two user
selectable receiver bandwidth filters. While the use of
either filter will provide superb receive audio, selecting the
wideband filter while on channels 1-40 will further increase
your receiver’s tolerance to older 40 channel wideband
radios that might otherwise sound over-modulated or
mildly distorted. Select the narrowband filter to improve
the selectivity of the receiver to provide greater resistance
to interference from older 40 channel wideband radios
operating on adjacent channels.
To select the desired filter
1. Press and hold
MENU
to enter the menu.
2. Press
MENU
repeatedly until ‘NBFLT’ (Narrowband Filter)
or ‘WBFLT’ (Wideband Filter) is displayed.
3. Press the or key to make the desired selection.
When finished briefly press the
PTT
to exit the menu.
Narrowband filter selected
Wideband filter selected
NOTE: The wideband receiver filter setting is only applied
to channels 1 – 40. Channels 41 – 80 always use the
narrowband filter.
DYNAMIC VOLUME CONTROL (DVC)
The modulation level of signals heard on the UHF CB band
has always varied considerably resulting in noticeable
differences in received audio volume between stations.
Generally users have compensated for this by adjusting
the
Volume
control for each incoming signal. With the
introduction of 80 channel narrowband transmissions that
use lower levels of modulation, the diversity in received audio
volume is likely to increase further.
Your radio is able to automatically compensate for these
variations in received audio level by utilising a
Dynamic
Volume
Control
. When activated, this feature automatically
compensates for variations in received audio level resulting in
a constant audio output level to the speaker.
To activate the Dynamic Volume Control
1. Press and hold
MENU
to enter the menu.
2. Press
MENU
repeatedly until ‘DVCOF’ (Dynamic Volume
Control Off) or ‘DVCON’ (Dynamic Volume Control On) is
displayed.
3. Press the or key to make the desired selection.
When finished briefly press the
PTT
to exit the menu.
Dynamic Volume Control ON
Dynamic Volume Control OFF
