Phone Jack.
Use a headphone for
private
listening.
Inserting
the headphone plug
silences the internal
speaker automatically.
MIC Jack.
Connect
the push-to-talk
microphone
or the optional
telephone
hand-
set.
RF Gain.
This controls
RF gain when receiving.
To increase RF gain (reception
sensitivity)
turn
the
knob
clockwise
and to
decrease turn
cou nter-
clockwise.
Channel
Selector.
Continuously
rotating
switch
selects anyone
of
23
channels
for
transmit
and
receive
operation.
Signal
Strength/R F Power
Meter.
During
reception,
the bu ilt-in
meter provides a relatfve indication
of
signal strength
in "S"
units on the lower scale and offers a comparison
between one incoming
signal and another.
During
transmit,
this wi II provide an indication
of antenna
RF power
on the
upper
scale.
As
you
speak,
the
pointer
should
"flicker"
slightly,
indicating
that you are modulating
the RF carrier.
AC Power Cord.
Connect the power
cord plug to the AC outlet
supplying
120 VAC,
50/60 Hz.
AC Power Fuse.
When replacing the fuse always use the same type fuse, 125 V, 3/4 A.
Remote Speaker Jack.
This will
be used to control
the built-in
speaker when operating
the
transceiver with
the optional
telephone
handset connected.
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Summary of Contents for 673B
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