KIN G
KMA20/KR21
MARKER
BEACON
RECEIVER
ISOLATION
AMPLIFIER
INSTALLATION
MANUAL
006-0044-02
REV. 2
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JUNE, 1976
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KlNG
KMA 20 /KR 21
BEACON RECEIVER/
MARKER
AMPLIFIER
ISOLATION
TABLEOF CONTENTS
SECTIONI GENERAL
INFORMATION
Page
Paragraph
1. 1
1. 2
1. 3
Characteristics
1-1
1-2
Required
1-6
Introduction
Technical
Accessories
SECTIONII INSTALLATION
2. 1
2.2
2. 3
2.4
2. 5
2. 6
General
Unpacking
Installation
2-1
2-1
2-1
and
Inspecting
Equipment
Notes
and Precautions
Procedure
Installation
Marker
Antenna
KA 40 Installation
2-2
2-2
Installation
2-3
(Optional)
SECTION
IIIOPERATION
3. 1
Marker
3.2
Isolation
3-1
3-2
(KMA 20 and KR 21)
Amplifier
(KMA 20)
Beacon
LISTOF ILLUSTRATIONS
Figure
2-1
Page
2-7
KMA 20 Installation
KR 21 Instanation
KA 40 Instanation
KMA 20 Interconnect
KR 21 Interconnect
KR 21 lnterconnect
KA 40 lnterconnect
2-8
Pin Function
2-2
2-3
2-4
2-5
2-6
Drawing
Drawing
Drawing
Diagram
Diagram
Diagram
Diagram
for 000-1024-00
2-4
2-5
2-6
2-7
2-9
(27. BV DC')
(13. 75VD(')
thru
2-9
2-10
2-11
-16
i
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KING
KMA 20/KR 21
MARKER
BEACON RECEIVER/
AMPLIFIER
ISOIATION
HISTORY
OF REVISIONS
Hevision
1,
August
1972
for
Change
Page
Reason
Title
Page
Warranty
Denotes
New Revision
New Warranty
of Contents
Added
Table
Revision
Added
History
Contents
History
1-1
1-3
1-4
1-6
2-1
2 -2
2-3
2-4
2 -5
2-6
2-7
2-11
2
-13
2-15
3
-1
3-1
3-2
of Rev.
Test
Added
Information
Lamp
and Selectivity
Revised
Sensitivity
Word Misspelled
Installation
Parts
List Added
Note Added
Warning
Paragraph
to 7.
6 Changed
Numbers
corrected
Figure
Drawing
New Installation
New Installation
Drawing
Turned
on Page
Drawing
Interconnect
Corrected
Reversed
Pins
Figure
Added
Figure
Added
Marker
Dese ription
Information
Added
Information
09/11
Changed
HI-LO
Added
about
ii
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New Paragraph
Switch
6 added.
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KMA20/KR 21
MARKERBEACONRECEIVER/
ISOLATIONAMPLIFIER
OFREVISIONS
HISTORY
Revision
2, June,
1976
Page
Reasons
Title
Page
Warranty
Contents
of Revision
History
Denotes New Revision
Deleted
Page Number changes
Added for Revision
2
1-3
Technical
Characteristics
2-2
Paragraph
Paragraph
2.3
2.3
2-7
2-9
for
Change
(5)
Updated
updated
(7) updated
Interconnect
2-11
Figure
Figure
Figure
3-2
Section
updated
2-6A changed
2-6B changed
2-8 updated
3.2
to 2-5
to 2-6
updated
iii
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KING
KMA 20/KR
21
MARKER
BEACON
RECEIVER/
ISOLATION
AMPLIFIER
SECTION
I
GENERAL
INFORMATION
1.1 INTRODUCTION
The King KMA 20
beacon
receiver,
to harmonize
with
TSO certification
conditions.
is a compact
transistorized
unit
providing
the functions
of marker
and audio control
isolation
amplifier
panel.
The unit has been styled
the all new generation
Crown
equipment.
panel mounted
of Silver
operation
under
environmental
varying
of the KMA 20 assures
The KMA 20 is designed
to provide
a uniformly
system
when
aircraft
radio
functioning
with other units of the new Silver
Crown line.
is designed
utilized
Although
the equipment
with
primarily
it will also perform
for use with the KX 170 NAV/COMM
unit,
effeciently
Crown transceivers
older
Silver
and radios.
semiSignificant
include
its AUTO switch
new features
of the KMA 20 design
feature:
concealed
and its ability
to control
COMM and NAV audio
marker
light presentation
independently.
Automatic
for the marker
to compensate
for
lamps,
dimming
circuitry
cockpit
is
also
ambient
incorporated
in the design.
lighting,
beacon
receiver
comprises
Within the KMA 20, the marker
one section
of the unit.
receiver
without
amplifier
and audio
The marker
of the KMA 20, available
the isolation
receiver
controlled
and
panel is the KR 21.
The receiver
is a crystal
superheterodyne
has excellent
and freedom
from interference
and FM stations.
selectivity
of television
Operating
controls
receiver
consists
for the marker
of two toggle switches
on the KMA
and an audio
selector
and lamp test control
switch.
The KR 21
20: a HI-LO
sensitivity
presentation
and
test
control.
A
three
light
has only the HI-LO
lamp
is de
sensitivity
lenses
signed
into the front panel of the unit with colored
to indicate
passage
over the
A-O-M
Besides
are identified
markers.
the colors,
the stations
engraved
by the letters
aircraft
on the lenses
plus the appropriate
audio
Should
the
user
tone.
desire
frequency
remote
marker
Radio
Corporation
a
location for the
lights,
manufacturers
King
an
remote
optional
light assembly
designated
the KA 40 for use with the KMA 20 only.
amplifier
isolation
possible
the combining
of the KMA 20 makes
of all receiver
into a single
speaker
inputs
cockpit
with 40db of isolation
between
each radio.
The
amplified
levels
are
to the level necessary
to drive a 4 ohm
input power
of the signals
circuit
(diode switch)
An electronic
muting
is provided
to automatically
isolate
speaker.
from the isolation
amplifier
button
the output of all receivers
whenever
the microphone
The
audio
Rev.
1,
August,
1972
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Page
1-1
a
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KING
KMA 20/KR
21
MARKER
BEACON
RECËIVER/
AMPLIFIER
ISOLATION
is pressed.
This
amplifier
design
high reliability.
feature
utilizes
eliminates
only one
the possiblity
of audio feedback
integrated
and a push-pull
circuit
The
in the cockpit.
output stage
for
Crown radio
functions
at the front
Audio control
of the Silver
system
are performed
selector
panel of the KMA 20.
A microphone
rotary
a series
of eight audio
switch,
selector
switches
and a marker
beacon
control
are the operating
receiver
sensitivity
controls
The microphone
selector
routes
audio and keying
information
to
of the unit.
transceiver
or to a EXT ramp
or passenger
the selected
hail speaker
address
system.
control
The AUTO switch
of the standard
model
is utilized
with the microin conjunction
For normal
operation
phone selector
switch.
COMM 1 and COMM
of the AUTO switch,
in the center
in the SPEAKER
position,
2 are placed
(off) position.
With the AUTO switch
microcontrolled
the receiver
audio selected
by the operation
of the
is automatically
on COMM 1, receiver
phone selector.
Thus if transmitting
audio for COMM 1 will be
routed
to the cockpit
speaker.
eliminates
the constant
manipulation
This feature
of
COMM receiver
back and forth between
audio selectors
when switching
transmitters.
Speaker,
off or mute,
and headphone
audio control
of each of the aircraft
radios
is
accomplished
three-position
with the remaining
toggle switches.
type solid state regulator
is used to supply
the regulated
to the marker
A series
voltage
receiver
and audio boards
of the unit.
Since each aircraft
installation
is wired
for eithier
interchange13. 75 or 27. 5V operation
of the unit,
the KMA 20 and KR 21 are completely
able between
aircraft
with no internal
changes.
wiring
1.2 TECHNICAL
CHARACTERISTICS
MARKER
SPECIFICATION
TSO
COMPLIANCE:
CONTROL:
DUTY
CYCLE:
INPUT
IMPEDANCE:
OUTPUT:
Page
1-2
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BEACON
RECEIVER
-
KMA
20/KR
21
CHARACTERISTIC
TSO
C35c
Env.
Panel
mounted
audio selector
the unit.
Category
equipment.
controls
DACAAAX.
and
Sensitivity
on the front panel of
Continuous.
Designed
to match
50 ohm
antenna.
AmpCapable
of 10 milliwatts
into Isolation
lifier
input of 5000. Capable
of 6. 25 watts at
the 4O speaker
output.
November,
1969
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KING
KMA 20/KR
21
MARKER
BEACON
RECEIVER/
ISOLATION
AMPLIFIER
SPECIFICATION
OUTPUT:
CHARACTERISTIC
(Cont)
to 1. OVRMS at the isolation
adjusted
input.
Factory
amplifier
DESIGN:
All
FREQUENCY:
Crystal-controlled
SENSITIVITY:
Low:
High:
SELECTIVITY:
6db at ±10KHz
60db at 575KHz
AGC
Less than 6db variation
in audio
when the rf level
from
is varied
old to 200, 000µv.
CHARACTERISTICS:
ISOLATION
TSO
COMPLIANCE:
solid
CONTROL:
Panel
controls
DUTY
CYCLE:
-
C50b
at 75MHz.
for
for
hard
hard
Min.
Max.
output
lamp
level
thresh-
KMA 20
Env.
Category
mounted
equipment.
are on the front
DACAAAX.
All operating
panel of the unit.
Standard
model
accomodates
two transceivers
and four external
receivers,
International
model
accomodates
three transceivers
and
four external
receivers.
INPUT
IMPEDANCE:
500 ohms.
INPUT
ISOLATION:
40db
between
input
INPUT
SELECTOR
Each
isolated
audio input
SPEAKER,
SWITCHES:
terminations:
MUTING:
Audio
mitter
Rev.
lamp threshold
lamp threshold
Continuous.
INPUTS:
INPUT
parts.
No moving
2, 000µv
500µv
AMPLIFIER
TSO
state.
2, June,
1076
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channels.
Muting
is 40db
is keyed.
has three
OFF or
or better
when
independent
PHONE.
a trans-
Page
1-3
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KING
21
KMA 20/KR
MARKER
BEACON
RECEIVER/
ISOLATION
AMPLIFIER
CHARACTERISTIC
SPECIFICATION
4 ohm output:
output is 6. 25 watts
at the 4 ohms
Rated power
With a supply
output.
voltage
of
speaker
power
output
27. Svde,
increases
capability
to 8 watts.
OUTPUT:
SPEAKER
8 ohm output:
output
is 6, 25 watts
at the 8 ohm
Rated power
at 27. 5
output.
With a supply
voltage
speaker
to
power
output
increases
vde,
capability
8 watts.
DISTORTION:
Less
FREQUENCY
.
RESPONSE:
KMA
POWER
than
10a/o at rated
6dh from
Within
350Hz
output.
to 3000Hz.
20 GENERAL
REQUIREMENTS:
lnstrument
panel lighting:
KMA 20 idle current:
current:
KMA 20 operating
PHYSICAL
DIMENSIONS:
WEIGHT:
13. 75V
300ma
1. 1 amps
Length:
Width:
Height:
27. 5V
150ma
1. 1 amps
6. 293 inches
6. 2 inches.
1. 6 inches.
behind
instrument
panel.
2. 3 lbs.
KR 21 GENERAL
POWER
REQUIREMENTS:
Current:
Idle
Operating
Panel
Page
170ma
Current:
Lighting:
1-4
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120ma
300ma
250ma
None
at 13. 75V
at 27. 5V
at 13. 25V
at 27. 5 V
Rev.
1,
August,
1972
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KING
KMA 20/101 21
BEACON
REC,EIVER/
MAR<ER
AMPLIFIER
I3OLATION
SPE CIFICATION
CHARACTERISTIC
PHYSICAL
Length:
Width:
Height:
DIMENSIONS:
0. 562 lbs.
WEIGHT:
KA 40
POWER
PHYSICAL
REQUIREMENTS:
DIMENSIONS:
GENERAL
furnished
Marker
by KMA
lamp power
is operating.
0. 125 amp while the lamp
Length:
Width:
Height:
2. 5 inches
3. 2 inches
1. 05 inches
(including
20
connector)
0. 25 lbs.
WEIGHT:
November,
5. 667 inches
3. 20 inches
1. 050 inches
1969
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Page
1-5
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KMA20/KR 21
MARKERBEACONRECEIVER/
ISOLATION AMPLIFIER
1.3 UNITS/ACCESSORIES
REQUIRED
KPN 066-1024-XX
KPN 066-1021-01
A.
Unit:
B.
Kit:
KMA20 Installation
KR 21 & KA 40 Installation
KMA20
KR 21
Installation
QUANTITY
1
2
1
1
1
2
2
4
2
2
2
Kit
(See
Figure
2-8)
KPN 050-1167-00
030-2016-00
Connector
Kit:
089-6163-05
(4) screws
Both are included with
050-1167-00
consists
and
unit.
of the,following:
DESCRIPTION
KING PART NO.
Solder
Lug (Dual)
Cable Half Clamp
32 Pin Connector
Ampheno1 26-190-32
Cover
Mounting Plate
Connector
Mounting Plate
#4 Esna Nut
4-40 x 5/16 Screw
Flathead
Pan Head 4-40 x 1/4 Screw
Pan Head 6-32 x 1/4 Screw
Pan Head 4-40 x 5/16 Screw
Flat Washer
008-0041-00
030-1019-00
030-2061-01
047-1760-00
047-1762-01
089-2188-22
089-5523-05
089-5903-04
089-5907-04
089-5903-05
089-8025-30
Accessories:
KA 40 Remote Lamp Assembly
Page
1-6
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(071-0003-00)
Rev.
2, June,
1976
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KING
21
KMA 20/KH
MARKER BEACON RECEIVElt/
ISOLATION
AMPLIFIER
SECTIONII
INSTALLATION
2.1 GENERAL
Installations
of
the KMA 20,
equipment
agency
dimensions
installed,
installing
mounting
location
to fit these
and
KR 21 and
KA 40 will differ
according
and other
factors.
harness
The cable
requirements.
various
This section
information
to the number
of
will be fabricated
contains
interconnect
receivers
by the
diagrams,
to installation.
pertaining
ANÐINSPECTING
EQUIPMENT
2.2 UNPACKING
Exercise
evidence
shipping
care
the equipment.
Make a visual
inspection
of the unit for
extreme
when unpacking
of damage
shipment.
If a claim
for damage
save the
incurred
is to be made,
during
container
filed
with the
the claim.
The claim
should
be promptly
to substantiate
transportation
all
packing,
unit
storage
company.
and
bracing
or
When
filler
has been removed,
place
the equipment
in the shipping
material
in the original
packing.
Save the packing
used
container
for use
in
reshipment.
NOTESANDPRECAUTIONS
2.3 INSTALLATION
-WARNINGSee Figure
proceeding
2-BA
with
& H before
assembly.
cable
KMA 20 will conform
to the needs
of the customer,
agency
conditions
installing
and existing
Customer
options
will determine
the exact wiring
to unit location
and type of installation.
to be utilized
the following
suggestions
should
details
in the installation.
be considered
llowever,
before proceeding
with the actual
installation.
Close
adherence
to these suggestions
will assure
The
as
a more
(1)
satisfactory
(3)
from
the equipment.
the equipment
The KMA 20 may
mounted
location.
be rigid
in any
front
panel
space
requirements
and the depth
accomodate
the necessary
required
instrument
panel.
Since
behind the aircraft
the unit is shorter
than the other
it is normally
mounted
at the top of a vertical
When the equipment
cover
radios,
stack.
a front-operating
hold down screw
tray) is installed,
allows
installation
and
(mounting
easy
mounting
removal
of the unit from the aircraft
tray.
leave
enough
space on the
If possible
grasping
of the unit face panel to allow
the unit during
Thembove
applies
sides
removal.
either
or horizontally
to the KR 21 and KA 40 and additionally
they may be mounted
vertically
by changing
the marker
lenses.
Select
Placement.
location
(2)
performance
which
will
the protective
cover
plate
on the rear
When shipped,
and connector
Routing.
mounting
cover
for the cable
to emerge
are assembled
from
the right side of the unit.
of the equipment
If it is desired
that the cable emerge
from
the left side of the unit, the connector
mounting
to take is that Pin 1 of the unit connector
plate
may be reversed.
The only precaution
mate
connector
when the unit is installed.
with Pin 1 of the harness
Cable
which
have
separate
audio
grounds,
On all receivers
it is recommended
Grounding.
grounds
to a solder
lug on the connector
plate
be carried
mounting
of the KMA 20.
here
should
be terminated
io minimize
the possibility
of ground
All audio grounds
current
into the audio
that the grounding
system.
It is also
suggested
noises
being introduced
or speakers
connections
from the speaker
be made
at the KMA 20 ground
terminals.
System
that these
Rev.
1, August,
1972
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2-1
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KING
KMA 20/KH 21
MARKER BEACON RECElVER/
AMPLIFIER
ISOLATION
(4)
(5)
of all KMA 20 units
Supply Voltage.
Since the internal
is the same,
wiring
different
de supply voltages
is not necessary.
is shown
Wiring information
diagrams.
wiring
This
is also the case in the KR 21,
for
wiring
in the installation
(-00/07 Versions)
for the optional
procedure
The location
and installation
speaker,
or alternately
will be developed
system,
a PA (passenger
address)
manufacturer
by the installing
agency.
information
from
When installation
the airframe
is available,
a power
capability
of at least 8 to 10
it should
be utilized.
A speaker
having
and an impedance
watts
of 8 ohms
is required.
If a ramp
hail or PA speaker
is not utilized,
the EXT speaker
output
with a load resistor.
must
be terminated
This
is accomplished
by
8 ohm resistive
load.
KMA20's previous
terminating Pin 9 with an external
to S/N 11233 had
an internal
However,care
made to make certain
resistor
must
which
available
at Pin 8.
Ramp Hailer.
Ramp hail"
.be
resistive
(6)
load
P.A.
(-09/10/11
audio
output
is
in the KMA20 to be installed.
is
Versions)
which
system.
address
address
(7)
configuration
selected
The
by
The 09/10/11
Versions
-09/10/11
the mic-selector
have
versions
of
switch
the KMA 20 have
can
EXT (Ramp
both
an
extra
for passenger
and P.A.
Hailer)
4 ohm
be used
passenger
capability.
transceivers
Transceiver
Speaker
Terminations.
and recent
Output
Nearly
all current
speaker
have a 4 ohm output
connection
from
the amplifier-modulator
to feed a cockpit
amplifier
to the KMA 20 use the
directly
when an isolation
is not used.
Since the audio inputs
output
500 ohm headphone
the 4 ohm output of such amplifiers
To
connection,
is not loaded.
eliminate
this undesireable
twos ohm resistors
are provided
in the KMA 20 to
condition,
perform
this loading function.
PROCEDURES
2.4 INSTALLATION
(a)
(b)
Study
the installation
After
the location
in
(c)
(d)
Figure
2-1
to allow
is determined,
Figure
2-1
Refer
to Figure
(KMA 20)
four mounting
hole locations.
bracket.
mounting
Secure
(KMA
(e)
Fabricate
note of
(f)
Mount
the equipment
20 only).
the external
the preceeding
cover
the panel
make
2-2
(KMA 20) or
for installation
space
adequate
(KR
21)
2-2 (KR 21)
or Figure
punch
and drill
Mark,
(mounting
and
connect
or
the
using
2-3
Figure
holes
to the instrument
rack)
cable
in accordance
with
precautions.
installation
the KR 21 in the panel
cutout
Figure
or
of
the installation
the wiring
the connector
the dimensions
(KA
cable.
shown
40).
2-3
in
and
(KA 40) for
the aircraft
panel
the
panel
mounting
wiring
diagram
taking
harness.
-CAUTIONovertighten
Do not
screw.
the locking
2.5 MARKER
ANTENNA
INSTALLATION
Beacon
Any standard
type Marker
the KMA 20 or KR 21. However,
that a flight check
it is suggested
Page
2-2
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Receiver
due to
be made
Antenna
the
possible
after
meeting
variations
installation
may be used
TSO requit
ements
with
and sensitivifles
of the antennas,
if the sensitivity
to determine
setting
Rev.
2, June,
1976
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KING
KMA 2Ò/KE 21
MAHKER BEACON RECEIVER/
ISOLATION
AN PLI FIER
of the antenna.
for the sensitivity
to compensate
It is recombe changed
RG-58/U
that coaxial cable
for connecting
be used
the antenna
to the KMA 20 or KR 21
Receiver
Antenna
terminals.
in the receiver
mended
Marker
should
2.6 KA40 INSTALLATION
(OPTION)
the outline
consult
and dimension
drawing,
If the King KA 40 Remote
Light Adapter
is utilized,
2-3 for attaching
information
panel.
for the KA 40 is
Figure
the unit to the instrument
Wiring
diagram
of the KMA 20.
contained
in the installation
wiring
Rev,
1, August,
1972
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Page
2-3
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KING
21
KMA 20/KR
BEACONREGEIVER/
MARKER
AMPLIFIER
ISOLATION
I
O
CUTOUT DIMENSIONS
BEHIND AIRCRAFT
(3
LS60
FOR
PANEL
MOUNT
(
587)
6750
NOTES
I DIMENSIONS IN PARENTHESIS
2. WEIGHT 2.3LBS
Ig
ARE IN CENTlMETERS
(762)
3000
(15.94)
6281
(
CUTOUT DIMENSIONS
FOR
FRONT
AIRCRAFT PANEL MOUNT
4.12)
1.620
REE
293
THIS SURFACE FLUSH
WITH INSTURMENT PANEL
FIGURE
Page
2-4
Downloaded from www.Manualslib.com manuals search engine
2-1
KMA 20
(DWG.
NO.
INSTALLATION
155 -50 51-00)
2 650
DRAWING
Rev.
1, August,
1972
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KING
KMA 20/
R 21
MA (KER BEACON
RECEIVER/
ISOLATION
AMPLIFIER
----
2.700
(6.858)
2.812
(7.142)
(8.128)
3.200
-
o
0.056
(0.142)
--
(0.4 75)
-
O.iB7
--
(IS.062)
5.930----
---
NOTES
I ALL DIMENSIONS
IN PARENTHESIS
ARE IN CENTlMETERS.
LBS.
2 WEIGHT 0.562
FIGURE
2-2
KR 21
(DWG.
Rev.
1, August,
1972
Downloaded from www.Manualslib.com manuals search engine
ÏNSTALLATION
155-5052-00)
NO.
DRAWING
Page
2-5
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KING
KMA 20/KR
21
BEACON
RE CEIVER
MARKER
AMPLIFIER
ISOLATION
†
-O
*
-O
/
O
-
O
-
2.700
WO.056
i
(0.142)
(6.858)
a
2.8 12
(7.l42)
OO
4
38
(
(
O7 5
)
2
NOT E Si
I. ALL DIMENSIONS IN PARENTHESIS
ARE IN CENTIMETERS.
2. WEIGHT: 0.25 LBS.
FIGURE
Page
2-6
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2-3 KA 40 INSTALLATICN
155-5053-00)
(DWG.
NO.
DRAWING
Rev.
1, August,
1972
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KING
21
KMA 20/KR
MAEKER
BEACOlN RECEIVER/
AMPLIFIER
SOLATION
JiOI
|
I
KR 21
L
A
A
NC
B
B
NC
C
C
D
D
K
K
E
E
F
F
J
J
RG-58/U
H
H
MARKER BEACONRECEIVER ANTENNA
NC
POWER AND AUDIO GROUND
i
500A
AUDIO OUTPUT TO ISOLATIONAMPL.
NC
COAX FROM STANDARD
2-5
KR 21 INTERCONNECT
(696-1801-01)
DIAGRAM
(27. SV)
PIOI
A
A
NC
B
B
NC
C
C
D
D
K
K
POWER AND AUDIOGROUND
E
E
500.0.
F
F
J
J
RG-58/U
H
H
MARKER BEACONRECEIVER ANTENNA
I
L
FIGURE
June,
27.5 V DC
JIOI
KR 21
2,
a
-
FIGURE
Rev.
PIOI
1976
Downloaded from www.Manualslib.com manuals search engine
2-6
13.75 V DC
N.C.
AUDIOOUTPUT TO ISOLATIONAMPL.
NC
KR 21 INTERCONNECT
696-180
(DWG.
NO.
COAX FROM STANDARD
DIAGRAM
1-00)
(13. 75V)
Page
2-9
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KING
KMA 20/KR 21
BEACON
RECEIVER
MARKER
ISOLATION
KMA20
AMPLIFIER
|
PART OF P2OI
P401|J4OI
A
A
21
B
B
20
C
C
f
D
D
E
E
F
F
H
H
J
J
K
K
KA 40
l
FIGURE
2-7
KA 40
(DWG.
Page
2-10
Downloaded from www.Manualslib.com manuals search engine
INTERCONNECT
696-1802-00)
DIAGRAM
NO.
Rev.
2,
June,
1976
Downloaded from www.Manualslib.com manuals search engine
(MA 20/KR 21
MARKERBEACON RECEIVER/
ISOLATION AMPLIFIER
A/C Ground
Light
Inst.
Inst.
Light
A/C Power
1
2
3
4
VERSION
FUNCTION
PIN
-00
-00
-00
Non-Switching 500 ohm Input
Speaker
Output (Comm 1)
Speaker
Output (Comm 2)
Speaker
Load Common (Comm 1 and 2)
8 ohm
Ramp Hailer
A/C Speaker 4 ohm
Mic Audio In
HF Mic Audio
5
6
7
8
9
10
11
12
13
HF (Radio
through
through
through
through
through
through
through
through
through
through
through
through
-00
Ground
Dimmer (13.75VDC)
Tel)
500 ohm Input
-00
-00
-00
-00
-00
-00
-00
-00
No Conn.
-16
-16
-16
-16
-16
-16
-16
-16
-16
-16
-16
-16
versions
for
-03,
-00,
-09,
HF Audio
-07,
Radio
Marker
Marker
-10,
Audio in for version
Tel
through
through
through
through
through
-00 through
Comm1 Audio
Comm2 Audio
Nav 1 Audio
-00
Ant
Ant. Ground
Wht. Light Out
-00
-16
-16
-00
-16
-00
-16
Light
Out
Amber Light
Out
22
4 ohm PA Speaker
Mic Key In
23
HF Mic Key
Comm1 Mic Key
Comm2 Mic Key
Comm1 Mic Audio
Comm 2 Mic Audio
Nav 2 Audio
ADF Audio
DME Audio
25
26
27
28
29
30
31
version
through
through
-00 through
through
through
through
through
through
through
-00
-16
-16
-00
-16
-00
-16
-00
-16
-00
-16
-00
-16
-00
-16
-04,
for
-06,
versions
-07,
ADF #2 Audio for
and
Headphone
Out
-00
FIGURE 2-8
Rev.
2, June,
1976
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PIN FUNCTIONS FOR 066-1024-00
-00,
-12,
-01,
versions
-03,
and
-15
-13,
-02,
-16.
-11
-05,
-14.
No conn.
32
-16
-16
-00
DME Audio
-16
-15
for
No conn.
24
-15
through
-00
Ÿ
for version
No conn.
21
/
through
-00
Audio In for version
Rcvr
?/
-
Blue
-15
Beacon
-16
-12
-16
-00
Marker
20
-04,
-02,
-01,
-11.
-05,
14
15
16
17
18
19
versions
In for
-06,
and-16.
-13,-14,-15
-08,
for
through
THRU
versions
and
-09
-08,
-10
-16
-16
Page
2-11
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KING
KMA 20 /KR 21
MARKER
BEACON
RECEIVER/
AMPLIFIER
TSOLATION
SECTIONIII
OPERATION
3.1 MARKER
BEACON
(KMA20 ANDKR21)
Marker
receivers
beacon
are used to provide
accurate
fixes by informing
the pilot
passage
over beacon
located
on airways
stations
and ILS approach
courses.
Three
of beacons
are used.
the outer marker
and the middle
They are the inner
marker,
of his
types
marker.
instrument
The outer,
middleand
inner
markers
are used
in conjunction
with the radio
course
systems.
marker
landing
The outer
is normally
positioned
on the front localizer
near
approach
altitude
the point where the glideslope
path intersects
inbound
the minimum
after the procedure
Radio
from the airport
will vary
from 4 to 7 miles.
turn. Distance
from the marker
in an elliptical
pattern.
cone shaped
frequency
vertically
is projected
The marker
of two
signal
at 400Hz and is keyed to emit dashes
at a rate
is modulated
per second.
When passing
and the pilot
The middle
from the
power
to
modulation
equipped
series
of
the outer
will
hear
marker
a series
the blue light will
of low tone dashes.
flash
"on/off"
at a two per
second
rate
marker
about 3200 feet
is normally
on the front localizer
course
located
approach
pattern
end of the ILS runway.
The radiated
in shape and
is similar
marker
with 1300Hz and the
the outer marker.
The middle
signal
is modulated
When the KMA 20 (KR 21)
is keyed to identify
by alternate
dots and dashes.
aircraft
the middle
pitched
tone in a
passes
marker
a medium
the pilot hears
synchronously
dots and dashes
and the amber
light flashes
with the tones.
transmitter
The inner
marker
and
is located
close
to the end of the runway.
The beacon
are designed
antenna
to project
a cone shaped
pattern
of 75MHz energy,
The
vertically.
radio
output of the transmitter
is modulated
with an audio tone of 3000Hz.
An
frequency
aircraft
with the KMA 20 (KR 21) will receive
a 3000Hz
or
equipped
tone in headphone
marker
speaker
The inner
and the white lamp will be lighted
while over the station.
is
a point approximately
used to indicate
and if on proper
1500 ft. from the runway
glide
path the altitude
should be approximately
above the runway
100 feet.
beacon
The marker
function
in the KMA 20 provides
the pilot with audio switching
control
and the Hi-Lo
Switch in the KR 21 and KMA 20 provide
sensitivity
switching
control.
marker
receivers
provide
position.
The effect
of the high
Many
only a "low sensitivity"
position
the size of the cone shaped
"area
sensitivity
of indication"
enlarge
is to greatly
above the station.
or slightly
An aircraft
flying at high altitude
off course
may
fail to
receive
the signal when in the low sensitivity
postion.
that the KMA 20
It is suggested
Rev.
1, August,
1972
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Page
3-1
Downloaded from www.Manualslib.com manuals search engine
KING
KMA 20/KR
21
BEACON
RECEIVER/
AMPLIFIER
ISOLATION
MARKER
marker
switch
first
be placed
sensitivity
in high sensitivity
is received.
The control
switch may be turned
position
aural
until
to low sensitivity
appropriate
suggestion
is especially
This
or tower at that moment.
control
already
been indicated.
munication
with approach
if he
to
and/or
lamp
the duration
a
appears
of the indication
and to obtain
more
accurate
reading
of passage
since
the signal
to
build
and fade faster
on low sensitivity.
The marker
audio
off to obtain
the
may now be turned
exact
from the light only,
time of center
passage
since
the imminence
passage
has
of station
indication
reduce
is involved
in radio
com-
high sensitivity
an advance
indication
position
may be used to effectively
give the pilot
that he
to expidite
the ILS approach
the pilot may wish to
is approaching
the outer marker.
In order
retain
the outer marker
With the KMA 20 (KR 21) marker
higher
speed
until he is nearby
inbound.
from
about
mile
the outer marker.
in high sensitivity
the
aural
tone
will
begin
one
At
position
and reduce
this time, the pilot may switch the KM.A 20 (KIl 21) marker
engine
to low sensitivity
retrim
power
for final approach
also
and perform
to
speed,
cockpit
checks.
He is then prepared
actual
indicates
over
the outer marker
and the glideslope
begin
descent
when the marker
passage
is intercepted.
The
3.2 IsotATIONAMPLIFIER
(KMA20)
Both transmitting
at the front panel
switch
and receiver
and
audio
distribution
functions
Crown radio
of the Silver
controls
the functional
consist
Basically
selector
switches.
the KMA 20.
of
audio
selector
switch
performs
The microphone
information
to the appropriate
destination
are controlled
system
selector
of a microphone
two tasks.
It routes
microphone
keying
and audio
and secondly,
it switches
the output of the isolation
information
2 positions,
microphone
COMM
1 or COMM
of the International
this
In the HF position
model,
to one of two speakers.
In the
transmitter.
to the appropriate
transmitter.
information
when the TEL. position
is selis routed
to the high frequency
Likewise,
to KT 96 King phone in the
version.
In these three
ected,
the keying and mic audio is routed
positions
amplifier
speaker.
the isolation
output is fed to the cockpit
capabilities
the pilot with several
depending
on the option
made
The EXT position
on 00 /07 provides
at installation.
the output of the amplifier
In the EXT position,
is normally
connected
to a "ramp
hail" speaker
or alternately
to a passenger
address
system.
Should one of the receivers
be selectheard
ed in this mode,
audio
will
in
the
EXT
speaker
microphone
the
be
until the
is keyed.
When
and the microphone
is keyed,
the receiver
audio
output
the microphone
is muted
is fed to the EXT
amplifier
is rounted
-12
speaker
The
put
output.
EXT
position
is provided
A series
of
trols can be
the pilot
control
the audio
switches
switched
amplifier
headphones
the amplifier
external
bypasses
control
co-pilot
provided
Page
toggle
provides
a passenger
the
from
address
with a "ramp
system.
inputs
position
off
hail"
function.
to the isolation
to connect
each
to the speaker
amplifier.
And an added
Each
of
out-
4 ohm
these
con-
the center
receiver's
tothe
of
audio
input
then routes
the audio
output
position
in the "up"
or to
position,
in the "down" position.
In the PilONE
receiver
audio
completely
only a bypass
Since
individual
and the KlVIA 20 performs
switching
function.
with the speaker
the
to one receiver
of the receivers
the pilot may listen
while
is provided,
the isolation
and
on 09/11
for use as
which
input
receiver
headphones.
audio
monitor
another
One non-switched
could
utilizing
which
that are not to be switched,
as Hadar
Altimeter
can be used for audio
signals
ring
from
the King KT 06 KLng Phone.
signal
3-2
Downloaded from www.Manualslib.com manuals search engine
Hev.
2,
June,
has
been
Au dio
1976
Downloaded from www.Manualslib.com manuals search engine
KING
KMA 20/KR 21
MARKER BEACON RECEIVER/
ISOLATION AMPLIFIER
KN-70
LOAD
JUMPER
JUMPER
PINS AS INDICATED
NUMBER OF EXTERNAL
GIVEN
FOR
LOADS
GLIDESLOPE
EXTERNAL
LOADS
ONE
VOR/LOC
DEV
FLAG
M
F
KK
NN
H
B
PP
UU
TT
XX
DEV
C
M
NONE
TWO
NONE
THREE
1NTERNAL
FLAG
KK
NN
NONE
NONE
_A 3
PRE-RFEGURLATOR
030-006Ì-00
275V OPERATION
P2OlO30-2|O5-OO
PARTOF
P70l
030-2106-01,
STATOR
X
W
V
D
STATOR
E
STATOR
F
PA?TOF
J70l
I
C
R,0TOR
H
i
PARTOF
J70l
+VOR
FLAG
T
NA
†
i------Ty
L__
_.xx
-G.S.FLAG
L
+G.S.FLAG
FF
F
-
+RIGHT
8
J3.75V
+iOV
×
E
CONTROL
CONTROL
.5MHz
CONTROL
.7MHz
CONTROL
IDMS
42
.a
AIRFRAME
38
20
A/C
3USS
HCz
CONRORLOL
J
i 10
ll
T
*¿Cs
----
LAMPDIM'R(27.5V)
---
REFERENCE
VARIABLE
ILS
DD
H
A/C
2
AIRFRAME
GROUND(N
SPEAKER
OUTPUT
16 AWG)
21
AUX AUDIO#l(NO
6
e
e
KX l70
COMM
COM 500-
34
NAV
=
AA
500
CONNECTION)
OUTPUT
(COMI)
OUTPUT
(NAV
AA Dllo
MHz CONTROL
I MHz
CONTROL
I2
^0
i4
39
1
22
A
MIC
ÍMic
KEY
(COMM l)
AUDIO(COMMI)
I
DME
MHz"A"
"
"
"
-
23
21
RR
J 702
P702O30
vy
0005-00
25
GLIDE
SLOPE
ANT.
26
27
DME
KHz
a
"D"
"E"
"A"
TO
i
¯¯
28
--
29
3 C
3 I
32
FIGURE
llev.
1, August,
2-5
KMA 20 INTERCONNECT
DIAGRAM
(DWG. NO. 155-1075-00)
1972
Downloaded from www.Manualslib.com manuals search engine
I)
NNOCCONNNNEECCT
ONN
AUXAUDIOi‡4(NOCONNECTION)
l6
[3
ENERGIZE
(27, 5V)
Page
2-9
"
"
"
"
a
"C"
"D"
"E"
DME SWITCHING COMMON
GNU #2
INST LIGHT DIMMEl
N.C.!NST
C
PHASE
PHASE
,A
27.5Vt‡16AWG
IS
3
N
S
M
ONLY
OUT SIGNAL OUT
.!MHz
.3MHz
INPUT
PARTOF
7|
33
IO9MHzCONTROL
UU
SOLDER
LUG IN
CONNECTOR
030-2101-03
Pl7\
6
P
---
U
SWITCHING MATRJX)
(ILS
VOR /LOC
^
UP
FOR
TESTING
( SWITCHED)A/C
27.5V
w
+DOWN
L
PARTOF
UD
EE
LAMPDIM'R (l3.75V)
LAMPD1M'R(13.75V)
LAMPDIM'R(27.5V)
---PP
+
PART OF
p 7
Xtl6AWG
#16AWG
^^
4LEFT
030-206
PARTOF
J l7l
-
P70l
R
KN 70
VOR / LOC
CONVERTER
GLIDE
SLOPE
RE CVR
COMM
ANT.
SPKR GROUND
Y
JJ
'
¯
(A/C)
WW
FLAG
030-OO6l-OO
Pl72
N.C.
e
PART OF
'
73
C
N.C.
+FROM
KPl 550
INDICATOR
C
O
-VOR
q
O
,
i
+l3.75VDC
C
(A/C)
ROTOR
+
A
go
N.C.
LL
STATORG
t-
A
+27.5VDC
t'
Pi73
NAV
ANT
..
J201
WIRING D)AGRAM
27.5 V ONLY
) REMOTE
DME
LIGHT DIMME
BUSS
27,5
KA 39
(07HO4 l-O I )
PRE-REGULATOR
FOR
27.5V OPERATION
+ 27.5VDC
Î
N.C.
A
AC
B
O
B
O
+I3.75VDC
i
ËN.C.
(A C)
(A C)
kl6AWG
050-006f-OO
I
PJ72
dl72
JI73
IPl73
030-OO35-OOP40l
COMM
ANT,
KM A
20
INSTALL JUMPER BETWEEN
BANDS
IF RAMP
i
PINS
030-2|Ol-03
HAI.LERlSETUSED.
PART
PART
J 7l
OF
Pl7|
OF
PART
OF
J,7l
A/C
BUSS
27.5V
NAV
ANT.
030-2002-00
LAMP DIMMER
NC.
LAMPDIM'Rí275V)N.C
3383
(#)6 AWG)
OI
GLIDE
SLOPE
ANT,
PART OF
030-2lO-03
Pl7l
(l3.75V)
J2Of
16AWG
030-0061-00
P30l
LAMP DIM R (l3.75V)
LAMPD\M'R(27.5V)
E
20
P20l
030-206l-OO'
I
2
4
3
SOLDER
CONNLECTORNHOUSING
5
6
l3
l4
16 24 J2 25 27
Il 23 2826
29
15 30 7 31 l9 20 2f 22
8. 9
JO 32
IS
A/C
!7
SPARE
AMBLERELLAAMMP
N.C
I
M KR
ANT
17
AfRFRAME
\3.75V
PWR GROUND(Bl6AWG)
--
--- '
OREM
WHITE
|
UNU#2OAWG
DME
500
ADF
500
-
AIRCRAFT
RAMP
LIGHT DIMMER
SPEAKER
HAILER
8
4^
(13.75V)
-
BUSS
27.5V
SPEAKER
GROUND
42
OUTPUT
-
NAV 500^OUTPUT
AUX AUDlON
HF 5002
AUX AUDIO‡‡ 2
INPUT
6
I-;
I•
(NO
CONNECTION)
(NO
CONNECTION)
.3
7
POWER
SIGNAL
MHZ
CONTROL
MHZ
CONTROL
MHZ
.5
e
GROUND
[3.75V
H
INPUT
C
A
OUT
.7
N
CONTROL
MHZ
CONTROL
MHZ
CONTROL
R
9
S
.9
-
36
CONNECTÍON)
4
MIC KEY
HF MIC AUDIO
(NO
CONNECTION)
AUX AUDIO*l 3
AUX AUDIO#
KEY
(COMM 2)
(NAV2)
(NO
I
^
COMM
NAV
UNIT
INPUT
‡120AWG
HF MIC
.i
v
1
COM 500
A/C
A/C
27.5VlNPUT
VOR/LOC
SOLDMEAR
L2OG
SPEAKER OUTPUT
INST LIGHT DIMMER 275V
INST
N.C.
SWITCHED
(:l‡l6AWG)
.
3
E
LAMP
INPUT
INPUT
2l
HEADPHONE
--AIRFRAME
SWITCHED A/C
l3
¡4
37
(08
MHZ
(09
MHZ
-
1
CONTROL
W
CONTROL
X
IIO
MHZ
CONTROL
Ill
MHZ
CONTROL
ILS
ENERGlZE
V
U
4
g
(COMM 2)
I
MIC AUDIO (COMM2)
30
TO
AUTOPILOT
COUPLER
g
+LEFT
DEFLECTION
+RIGHT
+UP
DEFLECTION
DEFLECTION
L
DOWN DEFLECTION
M
DME MHz
'.
"
MIC,
A
--
"C"
l.UNLESS
TO
REMOTE
DME
NOTE'D,WIRE
SIZE
IS‡i22AWG
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EQUlPMENT
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DME KHz
li
a
"
"
"
COAX
INTERNAL
NOT USED.(SEE
CHART).
4. USE JWl6AWG TO INTERCONNECT
POWER GROUNDS.
25
26
(
MINIMUM.
IS RGS8 A/U.
LINES DENOTE JUMPERS TO
LOADS WHEN EXTERNAL LOADS ARE
2.ALL
ANTENNA
3.KN-70.DASHED
22
24
"D"
NOTESI
J30l
F
¡
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27
ligu
28
"C"
29
"D"
30
"E"
DME SWITCHING
3\
COMMO
32
155-1075-00
(R-I)
VOR
I LS
UN I T
KING
KMA 20/KR 21
MARKER BEACON/RECEIVER
ISOLATION AMPLIFIER
KN-70
LOAD
JUMPER
JUMPER PlNS AS INDICATED FOR
GIVEN NUMBER OF EXTERNAL
LOADS
GLIDESLOPE
EXTERNAL
LOADS
ONE
FLAG
M
H
C
F
B
M
H
TWO
THREE
VOR/LOC
DEV
NONE
NONE
DEV
FLAG
KK
PP
UU
NN
TT
XX
KK
NN
NONE
NONE
INTERNAL
WIRING DIAGRAM
13.75 V ONLY
030-006l-00
Pl73
Pl72
73
030-0061-00
NAV
ANI
P20 I 030-2|O5-00
J 201
W
V
STATOR
D
STATOR
E
STATOR
F
STATOR
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P701
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9
KP I-550
INDICATOR
NW
FLAG
,,
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VOR / LOC
CONVERTER
GLIDE
SLOPE
RE CVR
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L
-G.S.FLAG
L
GG
+G.S.FLAG
F
-
B
--
+RIGHT
-EE
L
LAMPDIM'R (13.75V)
_-
LAMP DIM'R (27.5V)
---
.l.
U
¯
FOR
TESTING
ONLY
(
REFERENCE
.VARIABLE
PHASE
PHASE
PART OF PI71
E
AIRFRAME GND#20
33
38
20
BUSS [3.75V
A/C
si
MATRJX)
.3MHz
CONTROL
.5MHz
CONTROL
.7MHz
CONTROL
.9MHz
CONTROL
LOS MHz
CONTROL
IO9MHz
CONTROL
I O MHz CONTROL
i i I MHz CONTROL
T
|LS
SPEAKER
6
CO MM
NAV
UNIT
g
ENERGIZE
ir
36
re
[2
16
l3
40
14
39
1
22
COM
500^
NAV
500
I)
(NO CONNECTION)
AUX AUDIO 43(NO
CONNECTlON)
CONNECT]ON)
N4
(NO
( COMM I)
Q
DME
MHz"A"
DME
KHz "A"
-s
C
21
P702O30-OOO5-00
"
"
25
GLIDE
SLOPE
ANT-
26
27
"
'"
3l
|
1, August,
I)
(NAV
23
30
Rev.
#2
(COM
OUTPUT
MIC AUDIO (COMMI)
1
KMA 20 INTER CONNE CT DIAGRAM
(DWG. NO. 155-1074-00)
(13. 75V)
1972
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Page
2-7
32
.
‡‡2OAWG
HF 500-
CONNECTION)
OUTPUT
AUX AUDIO
MIC KEY
--,
I
29
-4
-
AUX AUDj0
37
13.75V
OUTPUT
AUX AUDIO#l(NO
-
BUSS
GROUND(4* l6 AWG)
AIRFRAME
21
28
2
AWG
JNST LIGHT DJMMER (13.75V)
A/C
2
-
FIGURE
3
INST LIGHT GND
i‡ 16 AWG
17
10
H
J702
2
42
CONTROL
^
Y
RR
I
SOLDER
LUG IN
CONNECTOR HOUSING
030-2|Ol-03
SPKR GROUND
PARTOF
a y
3
N
S
+DOWN
|
SWlTCHING
C OUT SIGNAL OUT
MHz
J
UU
M
K
V{lLS
VOR /LO
D
UP
OF
.o
+I
U
PP
---
I
( SWlTCHED)
13.75V
w
x
^^
P
EE
LEFT
+
¯
R
JJ
+VOR FLAG
T
LAMPD1M'R(27.5V)
Y
FROM
-VOR
J 201
P2Ol
030-2061-00
ROTORH
u
I
-
LL
ROTOR C
Y
Z
COMM
ANT.
PA IT OF J 701
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"
"
"
"D"
"E"
a
a
"B"
"C"
b
"D"
"E"
DME SWlTCHING COMMON
,
)
TO
REMOTE
DME
I
HF MIC KEY
HF M1C AUDIO
030-OO6l-OO
l
KM A
-
20
(
030-2|O!-03
)
A/C BUSS |3.75
4
5
5
6
Il 23 2826
\3 f4 16 24 l2 2527
29
[5 30 7
31
l920
21 22
8
9
BLUE LAMP
WHITE LAMP
DME 500
-3-
INPUT
REMOTE
OPTION
^
MKR
A NT.
V(4tl6
PART
OF
Pf 7\
PART OF
J 7 i
¯
030-2002-00
PART OF
Pl7\ 030-2|Ol-03
LAMP DIMMER (13.75V)
LAMP DIM'R (13.75V)
p
LAMPDIM'R(27.5V)
AIRCRAFT SPEAKER
RAMP HAILER
8
^
4
A
T
v
SPEAKER
GROUND
OUTPUT
42
-0-OUTPUT
(COMM 2)
OUTPUT
31
(NAV2)
35
AUX AUDiO‡‡ I
(NO CONNECTION)
AUX AUDIO*l 2
(NO
37
!
DME MHz "A"
"
"
-e
MIC.
e
"
"
2.ALL ANTENNA COAX IS RG58A/U.
3. KN 70. DASHED LlNES 1)ENOTE JUMPERS TO
INTERNAL LOADS WHEN EXTERNAL LOADS ARE
NOT USED. (SEE CHART).
-
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(
e
n
CONTROL
I
22
23
24
.
25
"E"
26
27
.ngu
28
s
u
"
"
MHZ
.3
7
.5
e
.7
"C"
"D"
"E"
DME SWITCHING COMMON
OUT
CONTROL
CONTROL
.9
MHZ
CONTROL
108
MHZ
109
MHZ CONTROL
CONTROL
IIO
MHZ CONTROL
lli
MHZ CONTROL
ILS
ENERGlZE
TO
AUTOPILOT
COUPLER
g
+LEFT
H
C
A
D
29
30
31
32
17 i
ni"CIIU
S
T
UN I I
X
y
U
DEFLECTION
+RIGHT DEFLECTION
+UP DEFLECTION
DOWN DEFLECT]ON
al
VOR
I LS
W
ll
4
J30\
F
N
9
(O
j
E
8
CONTROL
MHZ
MHZ
P30!
L
M
"C"
nD"
DME MHz "A'
a
39
"B"
"
IS ‡f 22 AWG MINIMUM.
SIGNAL
MHZ
6
4n
MIC AUDIO (COMM 2)
TO
REMOTE
DME
VOR/LOC
4
(COMM 2)
'.
3|O
·
INPUT
N.C. 27.5V INPUT
6
gy
·
36
CONNECTION)
( NO CONNECTION)
( NO CONNECTION)
AUX AUDIO# 4
^
COMM
NAV
UNIT
A/C GROUND
13.75V
INPUT
.!
SPEAKER
MIC KEY
\3.75V
SWITCHED A/C POWER
(#l6AWG)
3
AUX AUDIO*l 3
Y
IS
SWITCHED A/C
J40I
GLIDE
SLOPE
ANT.
NAV
ANT.
LAMPDIM'R(27.5V
2!
-A-
INPUT
Sl1E
OF
J i7l
20
INPUT
NOTE'D,WiRE
PART
SOLDER LUÜ
KMA-20
COM 500
NOTE'SI
l. UNLESS
030-0035-00P401
030-006|-00
3383
AWG)
AIRFRAME PWR GROUND(NI6AWG)
NAV 500^
-
IPl73
17
HEADPHONES
-ADF 500
JI73
¯
a
.
JI72
10 32 18 (7
SPARE
AMBER LAMP
..
I
i
INSTALL JUMPER BETWEEN PINS\
T USED.
\ 8 AND 9 IF RAMP HAl.LER IS
Pl72
COMM
ANT
li
:-
in
PIN
FUNCTION
1
A/C
2
INST.
LIGHT GND
LIGHT DIM'R.,
3
INST.
4
A/C
5
No Conn.
COMM 1 SPKR
6
7
8
9
10
RAMP HAIL
SPKR LD.
RAMP HAIL 89
-
A/C
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SPKR 42
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
COMM 2 SPK
EXT.
-11
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME.
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
11
MIC AUDIO IN
SAME
SAME
SAME
SAME
12
HF MIC AUDIO
SAME
SAME
SAME
SAME
NO CONN.
NO CONN.
HF AUDIO IN
HF AUDIO IN
13
HF AUDIO IN
14
COM 1 AUDIO
SAME
SAME
SAME
15
COM 2 AUDIO
SAME
SAME
SAME
SAME
16
NAV 1 AUDIO
SAME
SAME
SAME
SAME
MARKER ANT.
SAME
SAME
SAME
18
MARKER ANT. GND.
SAME
SAME
SAME
SAME
19
WHT LIGHT OUT
SAME
SAME
SAME
SAME
SAME
17
SAME
SAME
SAME
20
BLU LIGHT OUT
21
AMBER LIGHT OUT
SAME
SAME
SAME
SAME
22
PA 42
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
23
MIC KEY IN
24
HF MIC KEY
SAME
SAME
SAME
SAME
25
COM 1 MIC KEY
SAME
SAME
SAME
SAME
SAME
SAME
26
SAME
COM 2 MIC KEY
SAME
SAME
27
COM 1 MIC AUDIO
SAME
SAME
SAME
SAME
28
COM 2 MIC AUDIO
SAME
SAME
SAME
SAME
SAME
29
NAV 2 AUDIO
30
ADF AUDIO
SAME
SAME
SAME
31
DME AUDIO
NO CONN.
NO CONN.
NO CONN.
SAME
SAME
SAME
32
HEADPHONE OUT
FIGURE
Rev.
13.75VDC
PWR
-10
-09
-08
GND
1, Atuggist,
SAME
SAME
2-8B
PIN FUNCTION
(ETVVGr.PIC).
FOR 066-1024-08
696-1805-00)
1972
Downloaded from www.Manualslib.com manuals search engine
thru
-11
I'age
2-15
SEME
SAME
ADF 2 AUDIO
SAME
KMA 20 VERSION::
PIN
FUNCTION
1
A/C GND'
2
3
4
S
6
7
8
9
INST,
INST.
-00
gr
PWR
-05
-06
-07
SAME
SAKE
SAME
SAME
SAKE
SAME
SAME
SAKE
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SABE
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAKE
SAME
SAME
SAME
SAKE
SEME
SAME
SAME
SAME
SAME
SAME
SAKE
SAME
SAME
SAME
89
RAMP HAIL
SPKR
SAME
SAME
*
COM lå
*
*
*,*
*
*
a-,
15
COM 2 aWÐEG
k
16
NAV 1 AUDW
k
j
yv~f
4
.
SAME
SAME
SAKE
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAMË
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
NO CONN.
HF AUÙIO IN
HF AUDIO IN
NO CONN,
HF AUDIO IN
HF AUDIO IN
NO CONN.
HF AUDIO.IN
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAMÉ
MARKER ANT.
MARKER ANT. GND,
WRT-LIGHE-9UT
WWhe-tf@HT-00T
SAME
SAME
SAME
SAME
49
12
13
14
20
-04
13,75VDC
RAMP HAIL SPKR LD.
A/C
21
22
SAME
-07
SGM-a-ZZEÐe
MIC AUDIO IN
17
SAME
ERU
EXT.
10
18
SAME
-00
-03
SAME
NO CONN.
88R-4-GBER
11
19
SAME
066-
-02
SAME
Àssä SLAÊ
LIGHT GND
LIGHT DIM'R.
A/C
4
-01
SAME
SR4E
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
AMBER-tTORT-BUT
SAME
SAME
SAME
SAME
SAKE
SAME
SAME
SAME
PA-4
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAKE
SAME
23
MIC KEY IN
SAKE
SAME
SAME
24
ßÐ-4G£rõëiY
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
25
COM 1 MIC KEY
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
26
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAKE
27
COM 1 MIC AUDIO
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
28
COM 2 MIC ADDIO
SABE
SAKE
SAME
SANE
SAKE
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
SAME
COM 2 MIC KEY
29
NAV 2 AUDIO
30
3\
32
*
SAME
SAME
SAME
ADF AUDIO
*
*
*
*
*
*
f4
SAME
HEADPHONE OUT
FIGURE
Rev.
DME AUDIO
1, JLugpast,
2-8A
SAME
SAME
DME AUDIO
SAME
SAME
SAME
ADF 2 AUDIO
DME AUDIO
SAME
PIN FUNCTIONS FOR 066-1024-00
696-1804-00)
(I39VCI. fšCI.
1972
Downloaded from www.Manualslib.com manuals search engine
SAKE
thru
SAME
DME AUDIO
SAME
-07
I>age 2-13
SAME
ADF 2 AUDIO
SB4E
SAME
DME AUDIO
SAME
SAME
SAME
DME
SAME
Downloaded from www.Manualslib.com manuals search engine
-
SPEAKER OUTPUT
27
--
-
--
-
-
DME 50KHz
-,
DME KHz K3--~
DME KHz KO
DME KHz Kl--DME KHz K2---
-
9
--
--
--
--
COMMON
ILS
VOR/1ßC
----....
G.S.
0.11tile tullTROL
N
T
---
--
y
-
-g
--
--
--
-
--
'¯'
-
4
RR
PRASE
REFERENCE
OTHERMISE
JUMPER
EXTERNAL
ONE
F
B
H
IMMAGE,
SPEAKER
SWITCHING
TT
NONE
XX
PP
TT
NONE
NN
NN
PP
UU
KK
FIAG
KK
DEV
VOR/LOC
BE ACCESSIBLE
AND SAFE
KEEP GROUND SEPARATE
FROM KMA 20
GROUND,
HEADSET INSTALIATION.
15.
FOR BOOM MIC O
IF STANDARD 3-WIRE MICADPHONE PLUG IS USED, THE FRAME SHOULD BE INSULATED
WASHERS TO AVOID INTRODUCING NOISE INTO MIKE AUDIO.
INTERCONNECT
OPTIONAL
ON KX175B.
NONE
300MA
AUXILIARY
MIC INPUT
-
-
16.
INTERŒlM
17
26
12.
IS
PIN
PIN
13.
AUDIO #2
-
-
ENERGI2E--
P/O
BY
1
18
17
1755
OFERATION
DME
P/O
12
28
13
29
23
24
8
7
27
--•
---
-
--
,
26
10
9
29
11 Ai
i
P1001
--
-
---
2
3
SPARE
DME SWITCHING
50KHz ILS-NC
raon
G.S. FLAG
G.S. FIAG
i gg¡gi
i
INST
LIGHT
LIGHT
DIMMER-27.5VDC
-16
(KI265)
INDICATORS
NOTE
8
DDetER
B
A
KA39
CONTROL
NO JUMPER
2A
A
B
G
GG
FF
U
r
-
1
X
,
V
aa
T
Z
.
t
_q
T
P201
---
A/C
n
PONER
O
m
I
r
K
C
Kl(032-0008-00
MIC
K
N
7-6021-00)
7.5VDC
INPUT
(MARKER LIGHT OUTPUT)
BECOME:
REQUIRED.
CR 1
oso-21er ao
REAKE
7, 8. AND 24.
PINS 7 AND 8.
PINS
NGE SHOWN.
-00/-15
KNGS DME INDICATOR
FOR THREE
JUMPER
JUMPER
DIMMER-NC
FOR TUD INDICATORS
FOR ONE INDICATOR
INST
INPUT
CONTINUGUS)
y
#16AWG--
#16AWG--
12)
(SEE NOTES 13 & 14)
DIMMER CONTROL
Ê
C
Nc
ac
17
32
33
3A
35
36
22
16
15
030-2146-00
P/O 9651
14
NC (NGTE
NC
COMMDN
OUTPUT
EONER #16AWG
INPUT
A/C
REMOTE OPTION FOR VERSIONS
FOR
VERSION THE lAMP OUTPUTS
PIN 21 has no connection
PIN 20 has no connection.
PIN 19 MARKER RADIO 5002 INPUT
-
-
C
ENERGIZE
RIGHT
ILS
+
DOMHY IDAD ,
DUMMY IDAD-#
+ LEFT
STATOR D
STATOR E
STATOR F
staron o
ROTOR C
ROWR
+
H
TOR FIAG
VOR FLAG
+ TO
-
+
9.
KN74
13.75VDC
SNITCHED
13.75VDC
(0.75A
--NAV
K3
K2
K1
50KHz
Hz
Hz
Hz
36
AUX AUDIO #1----AUDIO #237 --AUX
Aux AUDIO #3
15
is
Aux aunto es-
--
--
--
--DME
--DME
--DME
--
(1, SA CORTINUOUS)
(5.0A
201 DUTY FACTOR)
--COB91
--COMM
--
KMA20
P/O P201
.....
N
4
MHz M2
KHz KO
MHz M3
--DME
--DME
MHE MO
HRz M1
--DME
--DME
INST LIGHT DIMMER-NC
33
LIGHT DIMMER---27.5VDC
38 --INST
POWER #16AWG
20 --A/C
EX175/XX
P171
P
27.3VDC
2
1
3
18
P1001
K
5
K
X
23
24
25
27
28
29
30
31
32
5
42
P171
--ONE
030-2101-04
16.
8.
7,
VOR/LOC IN
ENERGIZE
2 OUT OF
3
4
19
oso-2ost-oo
COMMON-----
--POWER GROUND
---ILS
BREAKER PANEL
IN FLIGHT
ILS
-ILS
OITTPUT TO GIANNEL
GROUNDS.
O
5
MOUNTEDIN THE AIRCRAFT
COMM
NAV
15 NOT USED"
CAPABILITY:
WHENRAMP HAILER
AND AIRCRAFT
EXTERNAL SWITCHING
AT KMA20,
RES1STOR
---
RETURN LEADS SHOULD BE CONNECTED TO PIN 1
RAMP HAILER OUTPUT (Pin
9) TO BE TERMINATED WITH 7.52
5 WATT IDAD
FROM PHYSICAL
OR INSTRUMENT PANEL SUCH TRAT THEY WILL
RAMP HAILER
a.
K
REQUIRED NUHBER OF EXTERNAL IDADS.
BREAKERS ARE TO BE
NONE
H
M
NONE
M
C
FIAG
FOR
DEV
GLIDES1ßPE
IttE
ALL SYSTEM GROUNDS ARE AIRFRAME
CONVERT KIl75/KIl75B
P1NS AS INDICATED
POWER BUSS CIRCUIT
THREE
TWO
TUTING
#24AWG HINIMUM.
SPECIFIED,
RG58A/U.
ALL WIRES
VARIABLE
PRASE
P
5
B
NOTE
UP
DOWN
+
+
UNLESS
LOADS
FOR
N
LEFT
+
NOTE 5
M
RIGHT
U
+
5
F1AG
+ G.S.
NOTE
FMG
G.S.
-
NOTED,
--
S
V
T
VOR FMG
VOR FMG
+
5
PRC11
NOTE
X
W
+
-
A
W
ROTOR H
ALL ANTENNA COAX IS
VV
--
c -A
H
M
S
UU
KK
EE
B
Fy
L
NN
JJ
--
SS
W
--
--+
E
F
B
STATOR G
ROTOR C
STATOR F
D
es21
--
a
STATOR D
13
1'
CONTROL
CONTROL
110MHz
111MHz
12
10
7
6
2
26
21
1
20
18
17
33
38
£1
11
---
13.75VDC-
VOR/IDC OUT
NAV SWITCHED
#16AWG POWER GROUND
#16AWG•-
#16AWG-----
INPUT-
EOWER
---
P/O
14)
CONTROL
STATOR E
BB
A/C
NAV 13.75VDC
-
#16ANC
#16AWG
POWER
INPUT
COMM SWITCHED A/C
DIMMER
DIMMER
LIGHT
LIGHT
INST
L1
INST
OPERATION
EED
CONTROL
--
--
MK
R
.
10
109MHz
--
--
.
HEADPHONES
ADF 5000 INPUT
DME 5002 INPUT
COMM 13.75VDC
5A
42
E
5002 INPUT
IS)
CONTROL
030-2070-00
SPEAKER
NOTE 7 FOR 27.5VDC
2A
NOTE
CONTROL
3
11
18
23
89(SEE
GROUND #16nWG
IDAD COMMONy
HF (RADIO T£LEPHONE)
AIRFRAME
SPEAKER
RAMP HAILER
13.75VDe
DœMNT
L
.
108MHz
POWER GROUND (#22AWG)
--
HF MIC KEY
24
13
30
31
32
17
HF MIC AUDIO
13.75VDC
A/C POWER
13.75VDC
A/C POWER
DIMMERDIMMER
12
LIGHT
LIGHT
POWER--#20AWG
39
40
""¯
(SEE NOTE7
14
p
0.7MHz
UNLESS
11.
SFE
INST
INST
A/C
AIRCRAFT
DIMMER CONTROL
0
-
SEE NOTE
Au PA SPEAKER
NON-SHITCH 500 ohm INPUT
AMBER lAMP
BLUE LAMP
WHITE LAMP
1)
(COMM 1)
3
4
9
8
1
10
2
MIC AUDIO
MIC KEY (COMM
3A
35
P171
P172
9
P/O
030-0061-00
P173
030-0061-00
5002 OUTPUT (COMM 1)-5000 OUTPUT (NAV 1)
OR
-
OR
0.9MHz
CONTRÕL
NC
12)
NC
#16AWG
--
CC
MM
LL
HH
FF
Y
--
--
--
--
P
U
D
#16AWG-
3HITCilIll:;
POWER
CONTROL
+10.0VDC
X
E --0.3MHz
-iŠMiiz
A
---
A/C
COMMON
ENERGIZE
SWITCHED
ILS
IN
OUT
ILS
VOR/LOC
R
--
---
ENERGI2E
ILS
INPUT
COMM 13.75VDC
THE KA47 MAY BE USED 10
SCODE DME'S.
10.
K
M
19
20
21
22
5
27
25
16
29
28
26
COMM
ANT
NAV
ANT
030-0101-00
030-0101-00
SPEAKER OUTPUT
--NAV
---
14 ---COMM
7
15
EDWER#16AkG
A/C
COMM SNITCHED
DD
J
INPUT
NAV SWITCHED 13.75VDC-NC
NAV 13.75VDC
NC
DIMMER---13.75VDC
--
--
NC
NC
--
P7C1
AA
LIGHT
LIGHT DIMMER
POWER---#16AWG
--
INST
SPARE
INST
A/C
--
--
1.
6.
---
NC (NOTE
NC
POWER GROUND #16AWG--
--
--
--
--
--
--,
--
AUX AUDIO
#1---AUX AUDIO #2AUX AUDIO #3--#4AUX AUDIO
CONTROL
CONTROL
110MHz
111MHz
--
--
--
--
--
108MHz
--
-
-
--
CONTROL
CONTROL
0.0MHz
109MHz
CONTROL
CONTROL
0.7MHz
3.
KN70
--
--
--
-
-
--
030-2106-01
3
19
4
26
17
18
1
20
33
38
21
42
16
15
36
37
12
13
16
11
10
-
--
4.
5.
INc
DME SWITCHING COMMON
32
SWITCHING+10.0VDC
2
G.S.
0.1MHz CONTROL
6
CONTROL
7 --0.3MHz
CONTROL
8 -0.5MHz
31
29
30
28
--
-
-
-
34 --COMM
5000 OUTPUT (COMM 2)-5000 OtfrPUT (NAV 2)---35 --NAV
MIC AUDIO (COMM 2)
39
-MIC KEY (coMM 2)
40
50KHz ILS
5
DME MHz MD
22
MHz MI--23 -DME
DME MHz M2--24
DME MHz M3
25
2.
NOTES:
L
|
|
I
0
K
N
K
X
5
K
X
.
P20
P201
030 2061-00
P/O
030 2101-06
COMM
ANT
0061-00 OR 030-0101-00
NAV
ANT
OR 030-0101-00
Pl7
030
P17
030-0061-00
Pl73
-01
SWTCH
14V)
28V)