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2.4.3.3.2
IF Bandwidth Selection
IF Bandwidth is selected by pressing one of the five available detection
mode switches.
When a bandwidth is selected, the LED associated with that
bandwidth switch will illuminate and the previous bandwidth selection is disabled. The
available bandwidths and associated criteria are as follows:
o
IF Bandwidth Selection
a.
Ensure
that
AM, FM or CW mode is
selected (see
paragraph
2.4.3.3.1).
The bandwidth switches are
inoperative in USB, LSB and DF modes.
b.
The available IF bandwidth selections are 0.3, 1.0, 3.2,
6.0, and 50 kHz.
Depress the desired IF bandwidth
switch.
2.4.3.3.3
Gain Control Selection
Gain control mode is selected by pressing one of the three available gain
control mode switches.
When a mode is selected, the LED associated with that mode
switch will illuminate and the previous mode selection is disabled.
The available
modes and associated criteria are as follows:
a.
Manual Gain Control
1.
Press the SIGNAL STRENGTH meter switch.
2.
Press the MGC gain control switch.
3.
Rotate
the
RF
Gain
control
until
the
SIGNAL
STRENGTH meter pointer indicates MAN SET.
b.
Automatic Gain Control
1.
Select
the desired AGC time constant
by pressing
either the FAST or SLOW key switches.
2.
FAST AGC gives a 15 ms response time constant useful
for AM and FM signals.
3.
SLOW AGC a 15 ms attack time and 2 sec decay time
suitable for CW, PULSE, and SSB signals.
2.4.3.3.4
RF Frequency:
Tuning Wheel Entry
Adjusting the receiver tuned frequency is accomplished either by utilization
of the tuning wheel and TUNE switches or by entering the desired tuned frequency on
the general purpose keypad.
The RF tuned frequency
is displayed in the
FREQUENCY/MHz display window.
2-13
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