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PHONE JACK: Allows use of monaural headphones or earphones with 1/8-inch (3.5
mm.) plug.
GAIN: Varies the sensitivity of the receiver. Lowest gain is obtained by turning the
control to the left; highest gain is achieved by turning the control to the right.
∆ (DELTA) TUNE: Makes fine adjustments in the receiver frequency in order to give the
most pleasant tone to the transmission being received. When the knob pointer faces up
or is centered, the receiver will be tuned to the exact frequency indicated by the
frequency switches (located to the right of the signal meter). When the knob pointer is
turned to the left, it tunes in a slightly lower frequency; when turned to the right, the
receiver is tuned slightly higher in frequency than frequency switches indicate.
SIG/BAT TOGGLE SWITCH: Causes the meter to indicate either the signal strength of
a transmission being received or a low battery in the receiver. Normally, a charged
battery will register 6 or 7 on the meter. If the meter falls below 6, the battery requires
recharging.
LED/ML TOGGLE SWITCH:
Allows user to select either the meter light for night
tracking or the flashing LED circuit (located at the upper left of the meter) which gives
off an intensity proportional to the strength of the incoming signal. A center-off position
allows the user to save battery drain during daytime.
INT/EXT TOGGLE SWITCH: Chooses the means of powering the receiver--either the
internal receiver battery or the external DC power source. When the receiver is not in
use, the switch should be left in the center-off position.
Signal METER: Serves the dual purpose of registering a low battery or relative signal
strength.
The previously mentioned SIG/BAT toggle switch selects the information
desired.
FREQUENCY SELECT SWITCHES (3):
Identify the frequency to be used by the
transmitter. Small pushbuttons, marked with "+" or "-", will change the number in the
window of each switch until the last three numbers of the transmitter frequency are
selected. EXAMPLE: If a transmitter frequency label is marked 217.137, then 137 will
be selected by pushing the switches. The ∆ TUNE control might require adjusting to
give the most pleasant tone to the transmission. NOTE: The last digit (right hand
switch) may need to be moved up or down one digit, when temperature variations or
other factors intervene, to allow for easy adjustment of the ∆ TUNE near the middle of
its range.
BAND SELECTION TOGGLE SWITCH: Located at upper right, this switch allows user
to choose which band (of two choices) to receive a signal on. Band A, beneath switch,
will always bring in the lower frequency band of the two available. Band B, above the
toggle switch, will bring in the higher frequency band programmed to the receiver.
DC EXT POWER JACK: Allows receiver to be powered by a DC power cord with
cigarette lighter plug-in.
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