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5.2
STANDARD
FEATURES
The
Handheld Control
Head
has
the
following
standard
features:
2-DIGIT
LED DISPLAY
POWER-UP
SELF-CHECK
FULL
MIL-8
1
OD
SPECIFICATIONS
6O-SECOND
TIME-OUT
TIMER
EXTERNAL
SPEAKER
FAST_LOCK SYNTHESIZER
IGNITION
SENSE
MONITOR BUTTON
M
DC
-]
2OO
PTTID
EMERGENCY
99
CONVENTIONAL CHANNELS
TALKAROUND
UHF---40-WATTS
POWER
(VARTABLE TO 20-WATTS)
VHF-sO-WATTS
POWER
MODE-SLAVED
C
H
ANN
E
L
S
C
AN
5.3
OPTIONAL
FEATURES
The options available
for
the
models listed in
the
Service
Manual
are
available
for
the
Handheld
Control
Head,
except,
HHCH
Radios exclude
some
options:
W2O
TOUCH-CODE MICROPHONE
W665
CONTROL
STATION
W1O9
HANDSETWITHHANG-UP
One
option
in
the
Service Manual requires
a
different
kit
for
the
HHCH:
W496
REMOTE
MOUNT
KIT
W17'
CABLE
(adds
HKN4192A
and
HLN6092A;
deleres
HKN4191A)
An
additional option
is available
for
the
HHCH:
W335
REMOTE
MOUNT
KIT
W8'CABLE
(adds
HKN41
92A
and
HLN609
I
A;
deletes
HKN4191A)
5.4
FUNCTIONAL BLOCK
DIAGRAM
The
attached
PW-6193
shows the
Block
Diagrams
for
the
A'3
Model
Radio.
5.5
CONTROL
HEAD
DESCRIPTION
Service Manual paragraphs
1.3
and
1.3.1 do
not apply to
the
A3
radio.
Substitute the
following:
1.3 HANDHELD CONTROL HEAD (MODEL
A3)
The
Spectra Handheld
Control
Head combines
the
functions
of
a
microphone
and a
control
head
into
a
single
package.
1.3.1 Description of Controls (See Figure
1).
2
MONITOR
PUSH BUTTON
INDICATOF
PTT PUSH
BUTTON
TRANSI\4IT
INDICATOR
MICROPHONE
DIRECT
ON/OFF
SWITCH
HORN/LIGHTS
SCAN SWITCH
GPW-6029-O
Figure I
.
Handheld Control Head
OFF-ON-DIRECT
SWITCl'{
-
This switch latches
in
the ON position to turn
on
the radio. The
DIR
position
is
a
momentary position
that
enables \-/
talkaround.
H/L-SCAN
SWITCH
-
This momentary type switch
selects either the HORN and LIGHTS
or
the SCAN
function.
MODE UP-DOWN SWITCH
-
This
momentary
type switch selects modes.
DISPLAY
-
Two seven-segment LED
displays
show all radio states
or
statuses;
also
functions as
the
ON/OFF
indicator.
Dl
R-SCN-PRl
INDICATORS
-
These
LEDs
light
to
indicate:
that
the radio
is
transmitting DlRectly
to
another mobile (talkaround); that
the
radio is
in
the
SCaN
mode;the
PRlority status
of
the mode being
scanned.
5.6
POWER-LIP SELF
CHECK DISPLAY
Service
Manual
paragraph
4.1 (including
Table
7)
does
not apply to
the
,A.3
radio.
Substitute
the attached page,
Table
7,
A.3
model Radio
Power-Up
Self Check
Displays.
5.7
INTERFACE
BOARD REPLACEMENT
Service
Manual
paragraph
4.7.1
(Control
Head Board
Replacement) does
not
apply
to
the
A,3
radio.
However,
\-/
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