_..
,
,
---
--·
ERRATA
TM
11-638
WAR
DEPARTMENT
RADIO
CAUTION:
BEFORE
TRANSMITTER
TAIN
Page J,
"Headset" should read "Heads
"Key" should read "Key J
"Technical Manual"
11-638".
The following components should be listed:
1 Cord
1 Mounting (for k
1 Cord CD-6
Crystal Case
holders
1 Wrench for
l Wrench for 10
Page
5, Pa
"76"
Page
6, Par.
"(5)
Page
6, Par.
., ( 6)
Page
6, Par. 13 c1.; Pc1r. 13
"Cord CD-201
in.".
Pa.ge
:10, Par.
"PLT. .VOL."
Page
12, Par.
This entire paragraph should read "CASE
l 0
co
ntains 47 Crystal Holders FT- 243."
Page
12, Pa
"gr
ound wire and selected
REMOVING
RT
/PRC
THAT THE RECEIVER DIAL READS BELOW
Par.
2.
CD-201- A 18 in. (For Key J-
ey J-37
05
(For
CY-86/T
FT
-243
and crystals.
8-32
-32
r.
·s
r
l.
should be "104".
11
a.
Allen Wrenches, (2) ."
1 L
b.
Spare fu
ses
."
- A" should 'reaJ "Co rd CD-201
23 a.;
should read "PLT. VOLTS".
32
b.
·
r.
33 h. Omit:
OR INSERTING RECEIVER
-1
INTO SUITCASE
et
HS-30".
-3
7".
should read "Technical Manual
37).
).
Headset HS-
RC- 10, including
Allen Head Set
Allen Head Set Screw.
Add:
Add:
b.
Par.
23 c.
crys
tal".
30).
Scr
ew.
CY-
SET
BE
CER-
TM
47
crystal
- A 18
86/TRC-
TECHNICAL MANUAL
AN/PRC-1 (
5-3
6.c.
Page 1
During this operation, at certa
nd
5 megac
a
2.
Select the dip at the highest frequency indication.
i
nc
orrect dip is used,
will be noticed
Page 16- 40.g.
During this op eration, at
and 5 megacycl
dip at
th
eli
p
is
used, the high pitched whistle will not
al
the frequency
paragraph
Page 17-4l .f.
During this operation, at
and 5 megacycl
ticed.
Select the peaks at the highest frequency indica -
tion.
If
current drain will be noti
41
h.
Page 1
7,
''T
o insure the operator that the transmitter
to
power
against the metal portion of the antenna binding post.
The
neon bulb will glow. The intensity of glow will
increase with incre
Pag
e 20, Par.
"powered iron" should be
Page 20, Pa
"Immediately adjoining Condenser C 4
minal block. There
attached
nearest the front panel, the receiver
with a low impedance headset.
the position nearest the condensor C 4
(8).
in
frequencies, between 4
ycles
in the low band, 2 dips
no
minimum plate current drain
as call
ed
for in paragraph 36 C
ce
rtain frequenci
es,
2 dips m
e highest frequency indication.
of
the inserted
40 i.
es
in the low band, 2 peaks
the incorrect peak
Par. 41
i.
Add:
the antenna, hold the base
as
ed power output."
ce
ced
ay
rta
is
as call
in
be notice
cry
stal
frequenci
used,
no
ed for in paragraph
46.
"p
owder~d
r.
48.
Add:
is
a wir
e,
white with blue tracer
to
this block.
When
this wire
is
When
may
If
as called for in
minimum plate
of the neon bulb
iron".
1,
is
connected for use
1,
be
noticed.
If
the
(11).
es, between 4
d.
Select the
th
e incorrect
be
heard
es, between 4
may
be no-
is
delivering
is
a black ter-
in the position
this wire
the receiver is
is
s,
in
.f
' •' a •
connecte
metal tag attached
should indicate the headset used. The word
appears on one side of the tag and the word "LOW"
the reverse s
Page
"T
minal blo
Par.
Page
"400-ohm series resistor" should
ca
Page
"Fo r this adjListm
S
P
"0.05 seri
sistor."
P
The sequen
d
"10 ma." should be "21 ma.", "7 ma" should be "15
ma
Page
''Load resistor" should be "Shunt resistor..,
P
"F
d for u
se
with
;L
high impedance headset. The
to
the phone jack on the front panel
id
e.
25, Par. 57
he term 'output impedance
48, immediately above.
25,
Par.
pacitor".
25, Pctr.
WIT
CH in the
age
26, Par.
age
30, Pa
(5), d (1), d (3), d (2) and d (1)
".
31, Pa
age31,Par.62c
our screws" should be "six screws".
a.
Add:
swi
tch' refers
ck
described in this 'Erra ta' under Page 20,
57
b.
be
57 c. Add:
ent set the
CW
position."
57
d.
es
capacitor" should
r.
61
d.
ce
of operations should be:
r.
61
d (6).
(2)(c).
CAL
be "400 ohm sen
"H
to
"0.05 mfd. series
CW.
. Under d
Page 34.
Sec
attach
ed sheets.
Page 35.
C 18, C 13, C 31- Quantity per unit should be
IGH
on
the ter-
PHONE
es
re-
(5)
3.
•
Page
37.
Signal Corps Stock No. 2Z5842-23
"
should
be
"L-20460-B."
Signal Corps Stock No. 2Z5842-18
should be
Page
R4 3Z5994A1 Resistor:
R6 3Z5999A1 Resistor: lixed; wire wound; 9.10 ohms
RS
Page
"R34; R35".
Quantity per unit should
Add
SW4 3Z9826-24.6 Switch: rotary; sing
SW1 3Z9826
SW5- Add: "Meter Switch"; "dwg. No. S1.701.02"
Page
"North American Philips Dwg. No. S1.231.06".
"Cord CD- 201-A: (for Key U
CD
Stock
Stock
"L-20460-B."
38.
Add the following items:
.fixed;
±3%
special; North American Philips
dwg. No.
+ 3% specia
dwg. No.
3Z5988D4 Resistor: fixed; wire wound; .840 ohms
+2%
dwg. No.
39.
Add
to
R29:
the following items:
-24
.7
shou
ld
41,
T5- Add:
-201-
'A
18 in.
No
. "3
El201A
No. "2B8300" shou
S1.264.04 1
Sl.264.05 1
special; North American Philips
S1.264.
be
position; calibrate, c.w. phone
switch; North American Philips
Dwg. No. Sl.701.02 1
Switch: rotary; 2-section; 2 poSitiOn
North American Philips Dwg. No.
1.701.04 1
be Dwg. No. G8.710.14.
(for
Key
'' should
ld
KNOB-dwg.
KNOB-dwg.
wire wound; 4.17 ohms
l;
North American Philips
03
1
"3".
band-transmitter switch;
-37
)"
should
J-37)
".
be
"3E7207-2".
be
"2B830U".
le
section, 5
be
No.
No.
"Cord
SECRET
( 2 )
· 3 H
.
·,
-S
-~~-~
~...,
--~-
WAR
DEPARTMENT
UN
Cf.AS.)·c,F
l':c
roc"d . ..
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e,
...
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.....
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RADIO
AN
/PRC-1
TECHNICAL
Q .
Dele
.
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..
CLv,
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............................
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,
············
··
MANUAL
~
SET
( )
C (\' I
WAR
DEPARTMENT
•
13
OCTOBER
1944
-
..
AUaEUM
WAR
DEPAR
T
MENT
TECHNICAL
";)
MANUAL
TM
11-638
RAI)IO
AN
/PRC-1
~JJJEif
...
~.
·'
' 1
SET
( l
WAR
DEPARTMENT
•
u.
-
~
..
,..
f:~orcdco
By
By
')~qn
········---~~---··········
Auth
of
....
?~~..f.-
.........
~·-································--'---
...................
SCEt Tcchnica Documents
13
...
.3.J..Q
lD
..
~.A.Rt:A.
OCTOBER
~
Dale
·.?:.~
...........
... : ..
f.:
.......
.Ld.
..............
.....
Center
-
~:S
..
..
)1.{~~-
_.
_____
_
1944
•
.,
TM
11-638, Radio Set
[A.
G.
300.7 (21
BY
ORDER OF
June
44).]
THE
SECRETARY OF
AN/PRC-1
(),is
WAR:
WAR
DEPARTMENT,
WASHINGTON
published for the information and guidance of all concerned.
25, D.
G.
C.
C.,
13 October 1944.
MARSHALL,
Chief
of
Staff.
OFFICIAL:
J.
A.
ULIO,
MAjor
DISTRlBUTION:
X.
(For
explanation
General,
The
Adj11tanl
General.
of
symbols see
FM
21-6.)
•
•
ll
TABLE
OF CONTENTS
SECfiON
I.
Description.
General
Radio
Range
Frequency
Power
Power
Power
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Set
AN/PRC-1 ( ) , list of
components
......................
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • • 3
covc:rage
source
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Adapters
Antenna
Carrying
Headset
Key
Receiver-Transmitter
Rectifier
Controls
LINE
ON
REC.
BAND
VOLUME 3 ........................................
CAL.
METER
OSC.
LIGHTS
AMP.
BAND
ANT. SWITCH
ANT.
SEND
Miscellaneous
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
case
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HS-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J-37
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power
RT-30( )jPRC-1
Unit PP-36(
)jPRC-1..............................
with
case.. . . . . . . . . . . . . . . . . . . . . 14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SWITCH A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
OFF
B
....................................................
TUNING 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SWITC
CW.
H 2 . . . . . . . . . . . • • . • . . • . . . . . . • . . . . • . . . . . . . . . . . . . . .
.
..........
PHONE 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SWITCH 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . .
TUNING
7
6.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.........
..
.........................................
TUNING 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SWITCH 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TUNING
REC
11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
markings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
· 2
11
12
15
18
20
21
22
23
24
25
26
28
29
30
31
1
1
1
1
2
2
4
4
5
5
5
6
6
6
8
8
9
9
9
9
9
9
10
10
10
10
10
10
11
11
11
II. Installation and
Initial
Installation of
Operation.
procedure
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
receiver-transmitter
and
rectifier
power
unit
...•.••••••••
Installation of antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation of set for
Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7
use
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
• •
32
33
34
35
36
12
12
12
14
14
15
m
,
Use of the receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions in operation of receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 15
Receiver calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Use of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Summary
III. Functioning of parts.
Receiver
R-f amplifier stage
Converter stage
I-f amplifier stage
Second detector stage
A-f amplifier stage
Beat-frequency oscillator
Transmitter
Power amplifier stage
Power supply
Switches
IV. Maintenance.
of
instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
.....................................................
..........
........
..............
........
TAB:LE
...........................
............
........
.. : ..........
.........................
..
.........
............................
.
.....
................
OF
.
....................................
..
. ...............
.
.
..........
CONTENTS
.
..........
.....
. .......
.............
...............................
.........................
................
.....
........
.......
.
..............
....
.......................
.
......
......
.....
....
...........
Paragraph
.
.
. .
..
.
.
..
.
.
.
.
.
.
38
43
44
45
46
47
48
49
50
51
52
53
Page
15
16
16
17
19
19
20
20
20
20
21
21
21
21
22
General
Operational inspection
Replacement
Receiver alignment
Procedure in locating trouble
Voltage measurements . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Point-to-point resistance measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Servicing the transmitter . . .
Moistureproofing and fungiproofing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
V. Supplementary data.
Maintenance parts list for Receiver-Transmitter
Maintenance parts list for
Maintenance parts
........
· · · · · · · · · · · · · · · · · · · · · · · · · · ·
..
· · · · · · · · · · · · · · · · · · . . . . . . . . . . . . . . . . . . . . . . . 55
of
tubes, fuses,
....... · ...
Ji
st for Radio Set
and
indicator lamps. . . . . . . . . . . . . . . . . . . . . . 56
· · · · · · · . . . . . . . . . . . . . . . . . . . . . . . . .
.......
..
Rectiifier
· · . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Unit
AN/PRC
·...................
RT-
30(
)/PRC-1......
PP-36(
- 1 ( ) miscellaneous. . . . . . . . 65
)/PRC-1.........
54
57
58
59
61
. . 63
64
23
23
23
25
27
30
30
30
31
33
38
39
TV
LIST
OF ILLUSTRATIONS
Pig.
No.
1 Radio Set
2 Line cord adapters
3 Adapters in left-hand compartment ......
4 Antenna
5 Right-hand accessory compartment
6 Headset
7 Key J
8 Rectifier
9 Front panels in open carrying
10 Radio Set AN/ PRC- 1 (
11
Receiving section
12
Transmitter section of front panel of
13
Block diagram of Radio Set AN/ PRC-1 ( )
14 Block diagram
15
Bottom view of receiver-transmitter chassis, showing location of parts
16 Rear
17
End view of receiver-transmitter chassis, showing location of parts
18 Rear view
19 Bottom view of rectifier power unit showing location of parts
20
Schematic diagram of Radio Set
AN/PRC
on
HS-30
-37
...............................................................
Power Unit PP-36(
vi~w
of
of
- 1 (
),
components
.................
reel
...................
.................
)/PRC-1
case
),
installed for operation
of
front panel of Receiver-Transmitter RT
of
Radio Set
receiver-transmitter chassis, showing location of parts
rectifier power unit showing location of parts
AN/PRC
ANjPRC-1
.........................................
.
..................................
.... .
and Receiver-Transmitter RT-3
................................
Rec
- 1 ( ) set-up for alignment of receiver
Title
.....
...
...........................
................................
.
.........
.. ........................
eiver-Transmitter RT-3
.........................
( )
, . .
...........
.............
.............
........
-30
( )/ PRC- 1
0(
...................
...
.
.........
· · · · · · · · · · · · · · · · · · · · · · 6
..
0(
)/PRC-1.
..
· · · · · · · · · · · · · · · · · · · · · · 9
· · · · · · · · .. · · · · · · · · · · · · · ·
..
)/ PRC-1
..........
.............
..................
.................
...
..............
...
.............
·.
· · · · · ·
. · · · · · · · · · · · · · · · 5
· · · · · · · · · · · · · · · · · · 5
. · · · · · · · · · · · · · · · 6
...........
· · · · · .. · · · · · · · · · · · · · ·
.......
...........
· · · · · · · . . . . 7
· · · · · · · · · · ·
· · · · · · · · · · · · · · · · 8
· · · · · · · · · · · · · ·
..
· · · · · · · · · · ·
· · · · · ·. · · · · 24
· · · · · · · · · · · · · ·
· · · · · · · · · · ·
· · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · 28
· · · · · · · · · · · · · · 29
........
· · · · · · 33
·..
·..
Page
vu1
7
13
16
16
19
24
25
26
v
•
DESTRUCTION
WH
Y -
WHEN-
HOW - 1. Smash - Use sledges, axes, handaxes, pickaxes, hammers, crowbars, heavy tools.
WHAT
To
prevent the enemy from using or salvaging this equipment for his
Wh
en ordered
2. Cut - Use axes, handaxes, machetes.
3. Burn -
4. Explosives -
5.
Disposal - Bury in
USE
ANYTHING
-
1.
Smash - Receiver, transmitter, antenna, power transformers, crystals, tubes, head-
2.
Cut - Wiring and line cords.
3.
Burn - Capacitors, c:arrying
4. Bend - Panels, chassis, containers, etc.
by
your comJmander.
Use gasoline, kerosene, oil, flame throwers, incendiary grenades.
Use
.firea!lms,
Scatter.
IMMEJ)IATELY
set, meters,
carrying
cases
Of:
grenades,
slit
trenches, fox holes, other holes. Throw in streams.
THIS
tdegraph
:.
~
NOTICE
bene.fit.
1NT.
AVAILABLE
EQUIPMENT
key, resistors, capacitors, coils, switches, etc.
case,
canvas bags and equjpment receptacles m
.
FOR
DESTRUCTION
THIS
EQUIPMENT
DEATH
THE
SOURCE
OR
TRANSMITTER
5.
Bury and scatter - Any
SAFE~rY
USES
PAINFUL
.
INJURY.
UNIT
or
DESTROY
DANGEROUSLY
DO
NOT
WHEN
THE
all of the above pieces.
EVERYTHING
NOTICE
HIGH
VOLTAGES, AND
CHANGE
POWER
TUBES
PLUG
IS
CONNECTED
OR
CONTACT
MAKE
MAY C
ADJUSTMENTS
TO
THE
AUSE
POWER
ON
vn
V:lll
Radio
Sel
AN/PRC-1 (
compo1lents.
) ,
SECRET
SECTION
DESCRIPTION
•
1. GENERAL.
Radio Set AN/ PR
radio receiver and transmitter system with all auxiliary
equipment in one housing.
ceiver
is
designed for the reception
modulated signals, as well
code signals.
amplifier transmitter
sion.
2.
RADIO
ENTS.
See figure 1 for illustration
Quan.
1
1
1
4
2
4
2
2
2
SET AN/ PRC-1 ( l,
Adapter
l adapter with continental type prongs.
1 adapter with English type prongs.
adapter,
attachment plug body.
Antenna.
Case.
Headset.
Key.
Receiver-Transmitter
eluding the following:
Fuses
(one
in accessory compartment).
Lamps, neon,
ccssory compartment).
Lamps, pilot,
use, two running spares).
Tubes
use, one runni
Tubes
in use, one running spare).
Tubes J
in
C-1
( )
is
a complete portable
The
superheterodyne re·
of
voice and tone
as continuous wave (
The
crystal-controlled oscillator power
is
designed only for c- w transmis-
LIST
OF
COMPON
s.
Component
s,
set consisting
Ediswan base to American prong.
FU-26, 1-a
in use, three running spares contained
JAN-6}5
ng
JAN-807
AN
-6S
use, one running spare).
of
the following:
RT-30(
mp, 250-v, type 3AG,
Y<~-watt,
0.25-amp, 6·8-v,
(VT-94)
spare).
(VT-100-A)
L7GT
) /
PRC-1, in·
(contained in ac·
V7
(VT-229)
(two
(one
V2
V6
c-w)
111
tn
(one
(one
Quan.
2 Tubes
usc, one running
2 Tubes
use, one
2 Tubes
use, one running spa
2 Tubes
in
use,' one running spare).
-
Rectifier
eluding the following:
4 Fus
2 Tubes
Te
2
Power
es,
use, three running spa r
JAN-5R4GY
spare, one in use) .
chnical Manual for Radio
Component
JAN-6V6
JAN
running
JAN-6SA7
JAN
5-amp, 250-v, type 3AG,
-6SK7
-6SG7
Unit
(VT-107)
spare).
(VT
- 117)
spare).
(VT-150)
re).
(VT
-211)
PP-36
es).
(VB)
Set
( ) /
(one
AN
Vl
PRC-1.
( ) .
3. RANGE.
a. Receiver. Because
operating range
AN
/ PRC
-1
conditions.
b. Transmitter.
mitter portion
upon various factors,
frequency, time
of
the
year. In general, the minimum reliable operating
of
range
tween 2 to 4 me is approximately
operating on higher frequencies, the transmitter
of
4. FREQUENCY COVERAGE.
variable from 2 to 12 me, covered in two overlapping
bands:
(.1) Low-frequency bancl- 2
(2) High-frequency band- 5 to 12.0 me.
the transmitter operating on any frequency be.
covering distances
a. Receiver.
of
( )
is
of
Radio Set AN/
of
clay,
The
of
its extreme sensitivity,
the
receiver portion
limited only by prevailing reception
The
operating range
PRC-1
the
most important
antenna installation, and season
up
to several thousand miles.
frequency range is continuously
to
5.25 me.
of
of
( )
is
of
which are:
50 miles.
(one
V5
(one
V4
(one
V3
(one
in.
(one
running
/ PRC-1
the
Radio Set
the
trans-
dependent
When
is
capable
in
in
in
in
/
1
b. Transmitter.
can
be operated on any frequency between 2 to 12.0
inclusive. Operation
mental crystal f reguency or its
crystal frequency).
the
The
crystal-controlled transmitter
is
effected on either the funda-
Th<:
second
ran~c
harmonic (twice
is
cove
red
bands:
(1)
Low-frequen
(2)
High-frequen
5.
POWER
cy
band 2
cy
SOURCE.
to 5 me.
hand S to 12.0
me.
Radio Set AN/ PRC-1 ( ) operates through its selfcontained power supply, Rectifier Power Unit
/PRC-1,
source
6.
justed
on
and 250. The receiver requires
watts, at
connected
of
from
115
POWER
a.
Rectifier Power Unit
any
INPUT
by
means
of
of
the following voltages: 115,
LlO
volts, 60
to
an
alternatin~
to
250
volts.
current (a-c) power
.
PP-36
( )
jPRC-
a rotary selector switch for operation
approx1m:ately
cycle.
Under key-down condi-
1 can
15?,
PP-36(
200, 220,
tions the power requirement for the transmitter
proximately 210 watts at 1 I 0 volts, 60
tinuous operation, it
frequency be
bet
ween
is
important that the power-llne
50
and 60
Intermittent operation, however, can
40-cycle
current provided the working penods do not
cycles.
cycles
per second (cps) ·
be
e~ected
For
exceed the following time limits:
1)
Transmitter
(
(2)
Receiver
·······································
..............................
..............
.
10
30
minutes.
minmtes.
me,
in
two
)
be
ad.
125
is
ap-
c~n
on
In
order
to
b.
to
age
the power transformer, at least 4 hours must
elapse between
nating curr
NOTE:
Th~:
An)' attempt
supply and might cause irreparable damage
transformer. Check carefully
power is ac.
make this check.
c.
Principal Power Supply Lines in Foreign Coun-
tries. The
light sockets and
are shown in Table I. These
chan~ed
general
at
they
be maintained for the electri
and eguipments
may,
There
feeding
a given area
standard lines. The location
may
possibly
therefore the
in
paragraph
a
d. Table I
volts,
a-c
prevent overheating and possible dam.
succcs~ive
operations
on
40-cycle alter-
ent.
radio set cannot
to
do
so will
Sec
the
pow
er supp
base
any
time
b~:
burn
nmc
in paragraph 33
lies
plu~s
in
du<:
to
wartime cond
operawd
out the
to
on
fuse:
b~:
sure
direct current.
in the
to
the
normally available from
various foreign countri
valu
es
may vary
should hold true since proper supply must
ca
l devices, transformers,
used
by
a given city, town, or area.
of course,
be
be
which
supplied
emergency circuits
do not
chosen
by
these emergency circuits,
usc
for the radio set
line voltage checking procedure outlined
33
should
always
be followed.
is
divided into four columns: territory, d.c
volts, and frequency. Where
an
precedes a number it indicates the type of supply and
vo
ltage
predominatin~.
power
the
power
available
on
how
to
es
or be
itions, but in
in
usc
for
the existing
asterisk (
*)
•
TERRITORY
--
NORTH
AMERICA
Alaska
British Honduras
Canada
Costa Rica
Cuba
Dominican Republic
Guatemala
Haiti
Hondura~
Mexico
Newfoundland
Nicaragua
Panama (Republic)
Panama (Canal
Pucno
Rico
Salvador
Virgin
Islands
2
Zone)
PRINCIPAL
D. C.
L!O
110
110
110, 220
110
220, 125
110,220
110,220
110
110, 220
110,220
110,220
POWER
VOLTS
TABLE
SUPPLY
I
LINES
IN
A.
-
110, 220
*110, 150, 115,230
*110
*110, 220
* 110, 220
*110, 220
110.220
*110,220
*110, 125, 115,220
110, I
*110
110,220
110
*110
*110
FOREIGN
C.
VOl.TS
15
COUNTRIES
,230
-
FREQUENCY
-
60
60, 25
60
60
60
60, 50
60,50
60
60, 50
50,60
60
60, 50
25
60
60
TERRITORY
WEST INDIES
Bahamas I'·
Barbados
Bermuda
Curacao
Jamaica
Martinique
Trinidad
SOUTH
AMERICA
Argemina
Bolivia
Brazil
Chile
Co
lombia
Ecuador
Paraguay
Peru
Uwguay
Ven
ezue
la
EUROPE
Albania
Au
stria
Az
ores
ium
Belg
Bulgaria
Cyprus (Br.)
Czechoslovakia
Denmark
Eswnia
Finland
Fran
ce
Germany
Gibraltar
Greece
Hungary
Iceland
Irish Free
It
State
aly
Latvia
Lithuania
Malw
Monnco
Netherlands
Norway
Poland
Portugal
Rumania
Russia
Spain
Sweden
Switzerland
Turkey
United Kingd
Yugoslavia
ASIA
Arabia
British Malaya
Fed. Malay
Non-Fed. Malay States
om
Su11es
D.
C.
VOLTS
'
110
*220
110
220, 110
*220
220, 110
220
110
,220
220
220, 110, 150
220
220, 110, 120
220, 120
*220
220, 120, 150, 110
220, 110
*220, 110
*120, 220, 110
110, 220, 120,
220, 110, 120, 250
440
*220, 110, 150
220, 110, 120
*220
I
10,
125,
220, 110
220, 110
220
220
220, 110
220, 150, 125
110,105,120
*220,
220, 110, 120, 115, 250
*110, 120,
220, 110, 120,
220, 120, 110, 150
110, 220
230,220,240
110, 120
230
125
15~
220,
11~
105
115, 250
25~
160
.
A. C. VOLTS
-
--
115
11
0
110
127
11
0
* 110
110, 220
*220,
225
*110, 220
127, 120, 220
*220
*110, 220, 150
110
220
*220, 110
*2
20
*110
125, 150
*220,
*220, 120, 127, 110
220
*220,
12
7, 110,
11{
*220, 120, 150
110
*220, 110, 115, 127
*220, 120,
220, 127
220,120,115, 110
*110,
*220, 127,
*110
*127, 110, 220
* 100, 105,
220
*220,
*150, 125,.120, 110, 115,
*220, 120
*220
105
110
220, 120, 127
*220, 230, 130,
*220, 120, 110
I
*220, 110, 125
120, 220, 110, 115, 105
*120, 110, 220
*120, 125,150,
*220,
*120, 220, 145, 150, 110, 120
*220, 110
*230, 240,
* 120,
230
230
12
7
11
5,
120, 125, 220, 230
120, 110
110,2
20,120
?OO
127,110
11
12
7, 110, 125
others
220,00
0. 115,220,
135
120,260
, 120, 150
130
,220,
135
FREQUENCY
60
50
60
50
50
40,60
60
50,60,43
50,60
50,60
60,50
60, 50
50
60, 50
50
60
50
50
50
50,40
50
50
50, 42
50
50
50
25
50,
50,
25
76
50
42, 50
50
50
42, 50,
45
50
50
100
42
50
50
50
50,42
50,42
50
50
50, 20, 25
50,40
50
5
0,25,4
0
50,42
50
50,60,40
3
TERRITORY
D. C. VOLTS
A.
C. VOLTS FREQUENCY
ASIA-con!"
Ceylon
China
Hawaii
India
Fr.
I ran
Iraq
Japan
Manchuria
Palestine
Philippine Island s
Syria
Siam
Turkev
AFRICA
Angola
Algeria
Belgian
British West Africa
British East Africa
Canary Islands
Egypt
Ethiopia (Abyssinia)
Italian Africa
Cyrenaica
Eritrea
Libya
Somali land
Morocco
Morocco (Spanish)
Madagascar
Senegal
Tunisia
Union
OCEANIA
Australia
New
Victoria
Queensland
South Australia
West
Tasmania
New
Fiji Islands
Society Islands
Samoa
d.
Straits Settlements
North
Borneo
Ind
o China
(Persia)
(P
ort.)
Congo
(Tripoli)
(Fr.)
(Fr.)
(Fr.)
of
South Africa
South Wales
Australia
Zealand
*230
220
220, 110
220,110,225,230,250
110, 120, 220, 240
220, 110
*220, 200
100
llO
220,
220
"'220
*220
110
220
150
120
110
200
230
220,230,240,
*240
230
220, 240
200,230,220
*220, 110, 230
230
230
240, 110, 250
110 •
230
110
230
*110, 200, 220
110,220
230, 220, 110, others
*120, 220, 110, 115, 240
220
220,230
* 100, 110
110
220
220
110, 115, 220
100
"'220, 110
110
* 115, 110,
220
230
240
127, 110
*
200, 110, 220, I
220, 250
* 110, 150
127
125, 110, 270
*230
115, 110
127, 110, 115
*
120
120
110 50
*220,230,2-10
*2-10
*230
*240
*200, 230,2-10
250
*240
*230
120
110
127
10
50
60
50,60
50,
60,25
60,25
50,
25
50
50
50
50,60
60,50,25
50
60
50
50
50
50
50
60
50
50
50
50,40
50
50
50
50,42,45
50
50
50
50
50
50
50
50
50
50
40
50
50
60
50
7. POWER OUTPUT.
a.
Rec
eiver.
25
milliwatt
b.
Transmitter.
mitter is not
2 to
12
me.
The
s.
Jess
than 30 watts
4
power
The
power output
output
of
the receiver is
of
at
any frequency from
the trans-
8.
WEIGHT.
Radio Set AN/P
approximately
as follows:
a.
The
carrying case with about six
Gel is packed in
RC
1
35 pounds.
a
snug
fitting corrugated case, then in a
()
set
The
up
for
operation, weighs
set is packed
pounds
for
export
of
Silica
CONTINENTAL
Fig:~re
2.
EDISWAN
Linu cord adapters.
vapor·proof foil barrier, then in a
case.
This unit
is
packed
in
having inside dimensions approximately
R~"·
This
overseas
wooden
resistant liner. One Crystal
containing a set of 47
packed
same
we
a large
packed
kit
packed
9.
in
a similar manner
wooden
overseas
ighs about 76 pounds.
Every
b.
sixth radio set
wooden
case,
spare parts for
case
measures
for export weighs about 270
ADAPTERS
(fig.
A set of molded l
in
the left-hand
The line
PP-36(
with standard
the radio
arc
in
usc,
cord
associated
)/PRC-1
American
set
in countries where other el
it
is
necessary
between the line-cord
crystals
is
case.
This
is
packed
with compartments into
five
radio
21Vsn
x 27Ys" x
2).
ine-cord
accessory
plug adapters
compartment (figs. 2 and
with
is
terminated with a
type
prongs. In order to
to
interpose a suitable adapter
plug and the available
~ccond
an
overseas
box also
Case
CY-86/TRC-JO
corrugated
wooden
27Yf
' x 19" x
has a water-
case
individually vapor-proof
also parked
comp
in
lete
overseas
a spare
inside
Farts
unit
kit,
which
sets.
This
spare
parh
28¥<1"
and
when
pounds.
is
supplied
3).
the
R<.-ctifier
Power
plug
Unit
fitted
usc
ectrical
standards
electric:1l
the
arc
outlet.
a.
The adapter with continental
to
the American plug except that the prongs
type
prongs
is
are
similar
round
and slotted.
b. The adapter with English
similar
to
type
prongs
is
the continental plug except that the prongs are smaller
in
diameter and somewhat longer.
Ed
iswan
base
c. The
type
having radial l
adapter
ock-in
d. The attachment plug
the radio set to standard Edison
is
pins.
body per
of the
mits
base
double-contact
connection
socket
outlets.
of
--~~-l~rl,~&z'
Figure
3.
Adaptur
10. ANTENNA.
The antenna supplied with
in
the left-hand
accessory
ill
left-baud romp.Irtmem.
Radio
Set
AN/PRC-1 ( )
compartment (figs. 4 and
9)
consists of 150 feet of cotton-covered tinned copper
wire, wound on a
is
the wire
is
attached to a porcelain antenna insulator. A cotton
line
order
far
end of the antenna
terminated with a phone tip; the other end
20
feel
long
to
provide a convenient
wooden
is
tied
handreel. One end of
to
the antenna insulator
means
for
to
the support selected.
s<.-curing
the
'
in
5
11
. CARRYING
a.
The
made
of
fabric.covered plywood.
CASE
.
case housing Radio Set
AN/PRC-1
The
strongest possible construction consistent
duced weight.
aluminum framework and
receiver, transmitter, and
Set AN/ PRC- 1 ( ) (fig.
sory compartments are provided.
sory compartment (figs. 3 and
1)
Adapters, set.
(
(2)
Antenna.
3)
Headset.
(
(4)
Key.
b.
The
The
interior
of
the case is fitted with an
brackets for supporting the
rectifier power unit
8).
In
addition, two a
The
9)
contains:
right-hand accessory compartment (fig.
contains:
1)
Set spare tubes for receiver.
(
(2)
Set spare tubes for transmitter.
3)
Spare rectifier tube for rectifier power unit.
(
( 4 J Spare neon bulbs.
5)
Spare dial and panel lamps.
(
c. A complete schematic diagram
ANjPRC
cover
12
a.
to
the
- 1 ( )
of
the case.
. HEADSET
Headset
fit
closely to the
is
affixed to the interior
HS-30
HS-
!fig. 6).
30
is
a light-weight headset designed
ope
rator's head.
headset are fitted with special
The
soft
designed to fit lightly in the operator's e
exclude outs ide nois
a headband
made
es. The
of
a thin strip
be shaped to fit the contour
of
headset
the
is
of
steel so
wearer's head. A clip,
( )
case
is
of
the
wit:h
its re-
of
Radio
cce
left-hand acces.
5)
of
Radio Set
of
the
hinged
receivers
of
rubber plugs
ar
cavities to
provided with
tbat
it
can
a~ed
to
~he
headset cord can be attached to the opera-
is
tors
clothmg to relieve the pull and weight
from the operator's
ears.
the left-hand accessory compartment.
b.
For use with Radio Set AN/ PRC- L ( ) , Headset
~S-30
m_
s.
w1th
13.
~oth
IS
CD
.
1n
ca
14. RECEIVER-TRANSMITTER
WITH
of
in the
tro
front
is
supplied with Cord
Plug PL- 55. The impedance
Cord
KEY
a. K
ey. J-37
tens1
CD-605
J-37
on
is
approximately 4000 ohms.
(flg.
7).
is
a standard telegraph
and spacing
mounted on a bakelite base and
- 201-
A.
b.
Cord CD-201- A is 18 inches long and terminates
Plug PL-55. The key, with its mount and cord
rried
in
the left-hand accessory compartment. '
CASE
(flg. 8
1.
a.
Receiver-Transmitter RT-
the
radio chassis and front panel
lugga
ge
fabri
c-c
overed carrying case. All con.
is,
jacks, terminals, and meter are mounted on the
panel.
of
The headset
is
contained in
CD-605 which terminates
of
Headset HS-3
key,
adjustable for
of
the contact arm.
is
fitted with Cord
RT-30( 1/PRC
30(
) / PRC- 1 consists
of
the set mounted
the cord
The
key
- 1
0
is
Fig11re 4.
Antetlll
tl 0
11
reel.
Fig11re
5. Rigbt-b
a11d
aueuory
compartment.
6
( 1)
The
receiver portion
of
the radio
set
consists
five-tube superheterodyne receiver designed for
performance reception
signals within the frequency range
(2)
The
transmitter portion
of
a two-tube crystal-controlled oscillator power-ampli-
11er
combination designed for c.w transmission
intelligence within
b. Receiver-Transmitter
on
a sin
gle
panel
receiver
mounted
mitter
the
and
all
on
the left-hand side
and
its components and controls are mounted
right-band side.
of
amplitude-modulated and c.w
the
frequency range
RT
by
means
of
its components
The
separate chassis are attached
of
2 to 12
of
the radio set consists
of
2 to 12 me.
-30(
)/PRC-1
of
separate
of
the panel; the trans-
chas'sis.
and
controls are
is mounted
to the panel with machine screws.
c.'
The
panel supporting the receiver and transmitter
chassis
is
held
in
place
in
the case by means
screws.
Fig11re
me.
of
6. Headset
of
a
high-
of
The
on
six
HS-30.
d. Receiver-Transmitter
with all tub
are held
e.
A complete set
lamps
unit is contained
for
es
and dial lights installed.
in
pla
ce
by
the
receiver, transmitter, and rectifier power
in the right-hand accessory compart-
ment.
RT-30(
)PRC
- 1 is shipped
The
clips
or
clamps.
of
spare tubes, neon famps, and dial
tubes
Figure 7. Key f- 37
7
Pig
me
s.
Rectifiel'
Potver
Unit PP-36( ) /PRC- 1
(//ld
Receive~·-Trnmmitter
RT-
30(
)/PRC- J .
15.
RECTIFIER
Rectifier Power Unit PPthe power unit and its
ce
nter compartment
power unit provides a source
plate, screen-grid and bias voltage for both the transmitter
and
voltage for the transmitter,
Full-wave rectification is employed.
for operation
voltages through
All controls, switches, and fuse posts are mounted on
the front panel
connection between the power unit
8
POWER
receiver
of
the power
of
UNIT
PP-
36( )/PRC
36(
) / PRC- 1 consists
front
panel mounted
of
the carrying case.
of
filtered, rect1fied
as
well as a source
receiver,
unit
on
the
adjustment
the power unit (fig.
of
- 1.
of
in
the upper-
Th
e. recti tier
a-c
of
a-c filament
and
power unit.
Provision is made
various
a selector sw1tch.
and
a-c
i~put
9).
Inter-
the receiver
. tnd transmitter is made
in
a polarized plug which
receptacle on the chassis
1
6.
CONTROL
All
operatinJ.: controls, jacks, indicating meter and
fuse posts are mounted
Transmitter
Unit
PP
when .the
operatmg control knobs associated with the rectifier
power unit bear
trol
RT
knobs assoCiated with Receiver-Transmitter
-
30(
S lflg. 9
RT -30(
- 36.( )
h1n
gcd cover
/PRC
letter. designations.
) / PRC 1 bear
by
means
of
a cable ending
fits
into a
of
the receiver-transmitter.
c
orrespondin~
).
on
the front panels
)/ PRC- 1, and the Rectifi
- 1. These items are visible only
of
the housing is opened.
(The
1111111ber
designations.)
of
Rec~iver
er
Power
The
operating con-
Pig11rc
9.
Prl?nt
panels
17. LINE
Control knob A, th e line switch,
the primary of the power transformer for
a.c power sources delivering 115,
SWITCH A.
is
used to adjust
operation on
150, 200, 220, and
250 volts. Counterclockwise rotation of the knob
pr
adjusts the rotary switch to
connections at the calibration points indicated
pane
l.
The
legend LINE
ly
panel immediate
18. ON
OFF
Control knob
above the control knob.
B.
B,
the
ogressively higher voltag'
SWITCH
ON
OFF
is
switch, is used to con-
painted
on
on
the
the
nect the rectifier power unit and hence the radio transmitter and receiver to its source of primary power.
19. REC
. TUNING 1.
Control knob 1 actuates the tuning dial mechanism
of the receiver. The legend
REC.
TUNING
is painted
on the panel immediately below the control knob. The
dia
l is calibrated directly in terms
of frequency. A
in
open
carrying case.
is
separate calibrated scale
two bands covered
20
. BAND SWITCH 2.
Control knob 2
by
is
operation on either one
provided for each
the receiver.
used to adjust the receiver for
of
the two frequency bands
covered.
21. VOLUME 3.
Control knob 3 is the volume control
Clockwise rotation of
receiver sensitivity
the
control knob increases the
and
the amplitude of the audio signal
of
the
receiver.
delivered to the headphones.
22 .
CAL.
CW.
PHONE
4.
a. Control knob 4 actuates a rotary selector switch
used to adjust the receiver.
(1)
With
ceiver
the switch in the
is
capable of receiving amplitude-modulated
PHONE
position,
nals only.
of
the
the
re.
sig.
9
(2)
When
coming signal produces
phones corresponding to the keyed signal impulses.
(
3)
plate·voltage delivered to the receiver is reduced, causing a correspond ing decrease in the sensitivity of the
receiver. Calibration
recep
the transmitter crysta
it
with the dial calibration, and adjusting the dial hair-
line,
23. METER
a.
which connects an indicating meter in various circuits
of
the transmitter. Inserti
circui
control knob.
b.
LINE
nitude
un
it by the
may be set on the correct tap.
delivers direct current, this condition
by the abnormal behavior
33)
.
c.
PLT. VOL. position, the meter indicates
rectified a-c voltage delivered by Rect
P
P-36( )/PRC-1
PRC-1.
d.
O
SC.
drawn by the plate
tube in the transmitter portion
RT
-30( )/PRC-1.
portant
of the crystal and the correct adjustment of the plate
tank circuit
e.
AMP. GRID
cu
rrent drawn by the transmitter power ampliifier.
meter reading therefore shows the magnitu
excitation voltage delivered to the transmitter Class C
power amplifier by the crystal-controlled oscillator.
Simultaneousl
portant function
the switch is in the CW. position, the in-
an
audible note in the head-
When
ti
if
With
With
With
the switch is
on
of a signal of known frequency generated by
necessary
Control knob 5 operates a rotary selector switch
ts
is
(par
SWITCH
shown by the position of the awow on the
AMP.
AMP
OS
PLT. VOL.
LINE
Wi
th the arrow
VOLTS position, the meter indicates the mag-
of
the voltage delivered to the recti
a.c
power source,
the arrow
to Receiver-Transmitt
the arrow
PLT. CUR. position, the meter reads
of
fun<!t:ion
is
to
of
the transmitter oscillator.
the arrow of the control knob pointing to the
CUR
. position, the meter reads the grid
y,
the meter reading pe rforms the im-
of
indicating the correct adjustment
in
the
CAL_.
position, the
of
the receiver is made through
l-
controlled oscillator, comparing
. 40 ) .
5.
on
of
the meter
PLT.
CUR
. GRID
C.
PL
of
the control knob pointing to the
T.
CUR.
VOLTS
so
CUR.
the
If
of
the meter po:inter (par.
of
the control knob pointing
of
the control knob pointing to the
the crystal-controlled oscillator
of
Receiver-Transmitter
A simultaneous and equally im-
indicate the oscillatory condition
in
1the various
.
Jier
power
LINE
SWITCH
the power source
is
m~lde
known
to
tlhe
filtered
i.fier
er
p,ower
R'T
the
tde
Unit
-30(
current
The
of
the
)/
r-f
of
the plate-tank circuit
stage.
f.
With
the arrow
AMP. PLT. CUR. position, the meter reads the plate
current drawn by the transmitter Class C power
fier. Simultaneously, the meter reading indicates the
correct adjustment of the power-amplifier plate-tank
circuit and the optimum degree
antenna coupling system.
24.
OSC
. TUNING
Control knob 6 drives the transmitter oscillator plate-
tank capacitor.
line on
on the panel provides an approximate indication of the
resonant frequency to which the oscillator tank circuit
is adjusted.
two frequency ranges corresponding to the two
quency bands covered by the transmitter.
corresponds to the low-frequency band
the other scale corresponds to the high-frequency band
( 5 to 12
brations, a certain amount
vided.
25.
A
mitter
2
plate-tank capacitor.
provides an approximate indication
quency to which the power-amplifier plate circuit
justed.
frequency ranges corresponding to the two frequency
bands covered by the transmitter.
to the low-freque
correspoq.ds to the high-frequency band (5 to 12
Although not indicated
amount
27. BAND
on
legend
mediately below the control knob.
28
ciated with the antenna-loading system in the transmitter
part
wise rotation
tl~e
knob with the dual-calibrated scale painted
The
me).
LIGHTS
Control knob 7
6.
AMP
Control knob 8 drives the transmitter power-amplifier
Control knob 9 adjusts the transmitter for operation
either one
. ANT. SWI
Control knob J o actuates a rotary selector switch asso.
of
7.
and
receiver panel lights.
. TUNING 8.
The
of
frequency overlap is provided.
SWITCH
of
BAND SWI
Receiver-Transmitter
of
the crystal-controlled oscillator
of
the control knob pointing to the
of
its loading by the
6.
The
relative position
dual-calibrated scale
of
is
(2 to 5.0 me) ;
Although not indicated by the dial cali-
of
frequency overlap
is
the pane l light switch for the trans-
The
po~ition
dual-calibrated scale
ncy
band (2 to 5
by
the dial calibration, a certain
9.
the two frequency bands covered.
TCH
is
TCH 10.
of
the control knob
One
painted
RT-30(
from
of
the indicator line
of
the resonant fre-
is
divided into two
scale corresponds
me);
the other scale
on
the panel i
)/PRC-1.
its initial point
ampli-
the indicator
divided into
fre-
One
sca
is
pro-
is
ad-
me).
The
m-
Clock-
le
lO
with the arrow pointing to l dcueases the inductance in
series with the antenna, causing
crease in the effective electrical length
switch points are provided.
Six
SWITCH
the control knob.
29.
Control knob 11 drives the variable capacitor asso-
ciated with the antenna-tuning system in the tramsmitter
part
Clockwise rotation
point with the indicator line engraved on the skirlt
control knob pointing to
capacitance in the antenna.tuning circuit.
3
0.
Control knob 12 actuates a switch which turns the
transmitter
ceiver off when in the
31.
In
elements directly associated with the operation
Set
AN/PRC-1
the Rectifier
panel
a . An extractor fuse post
panel
The
in the primary circuit
is
painted on the panel immediately below
ANT. TUNING
of
the Receiver-Transmitter
SEND REC.
off when
MISCELLANEOUS
addition to the controls mentioned, the folllowing
Power Unil
of
Receiver-Transmitter
of
the Rectifier Power Unit
fuse associated with the extractor post
11.
of
the control knob from its initial
0, results in an increase
12 .
in
the REC. position and the
SEND
MARKINGS.
( ) are located on the front panel of
PP-36(
of
the power transformer. Re.
a corresponding de.
of
the antenna.
The
legend
RT-30(
position.
)/PRC-1
RT-30(
is
provided on the front
PP-36(
)/PRC-1.
otf
and on the
)/PRC-l.
)/lPRC-1.
is
connected
ANT.
of
the
Radio
of
placement
counterclockwise rotation
FUSE, removal
a .new element.
b.
The
Transmitter
jack marked
or
high-impedance output connections are underneath
the receiver chassis.
c.
The
part
of
serted in the keying relay circuit at the jack marked KEY
located on the front panel.
in
re-
d. An extractor fuse post
panel
o(
fuse associated with the extractor post
the plate circuit
fier.
Replacement
through counterclockwise rotation
marked
section
of
e.
A crystal socket
Receiver-Transmitter
above the legend CRYSTAL painted on the panel. The
crystal socket provides
crystal in use, in connection with the crystal-controlled
osciJlator in the transmitter
RT-30(
f.
An
are provided on the front panel
RT-30(
responding legends
a blown fuse
of
the defective fuse, and insertion
audio output
RT-30(
PHONE
key
Receiver-Transmitter
Receiver-Transmitter
FUSE, removal
)/PRC-1
located on the front panel. Low.
used in conjunction with the transmitter
of
the transmitter class C power ampli-
of
a new element. .
is
RT-30(
)/PRC-1.
antenna binding post and a ground binding post
)/PRC-1
immediately to the
ANT.
is
accomplished through
of
the small knob engraved
of
the receiver part
is
made available
RT-30(
is
RT-30(
a blown fuse is accomplished
of
the defective fuse, and
located
)/PRC-1
)/PRC-1
provided on the
)/PRC-1.
of
the small knob
on
the front panel
a connector receptacle for the
part
of
Receiver-Transmitter
of
Receiver-Transmitter
left
and
GROUND.
of
Receiver-
is
connected
immediately
of
the
at
the
is
in.
front
The
in.
of
cor-
of
in
11
SECTION
II
INSTALLATION
32. INITIAL
Unpack
damage
compone
a . Radio Set
installed.
with the exception
in place
is
held
b. Five Crystal Holders
upper left.hand compartment, along with the plug
adapters, headset,
is
· shipped inserted in the crystal.holder socket on the
panel
of
c. The spare tubes, fuses, pilot lights, and neon bulbs
are contained in the upper right-hand compartment.
INSTALLATION
33.
AND
RECTIFIER
The
case housing the transmitter, receiver, and rectifier
power unit may be installed in any convenient position.
The most suitable position
when the case
erably on a desk or table
Having selected a suitable location for the
the two clasps with the luggage key and
of
the
accordance with the following steps:
a.
Make certain that the power supply
switch knob B
b. Set LINE
c. Rotate the METER
LINE VOLTS position.
d. Unwind the line cord from the two brackets pro.
on
vided
-36(
PP
long.
e.
Inspect the power source and select a suitable
adapter for the line cord plug
is other than the U.
used
PROCEDURE
.
the equipment carefully to prevent loss or
of
the components. Check against the list of
nt
s in paragraph
AN/PRC-1
The
tubes in the receiver and the transmitter,
by
clips. The transmitter power-amplifier tube
in
place
by
a clamp.
key,
Receiver.Transmitter RT-
POWER
is
mounted on a horizontal plane, pref.
2.
See
figure
1.
( )
is
shipped with all tubes
of
the power-amplifier tube, are held
FT-243
are contained in the
and antenna reel. A sixth crystal
30(
)/PRC-1.
OF
RECEIVER-TRANSMITTER
UNIT
.
for
operation
of
a height suitable for writing.
is
case,
lift
case.
Proceed with the installation exactly in
is
in the
OFF
position.
SW
ITCH
control knob A to 250.
the front, panel
)/PR
C-1.
The
SWITCH
line cord provided is
S.
control knob 5 to the
of
Rectifier Power Unit
if
the electrical system
standards.
obtained
open
the cover
ON
OFF
25
feet
AND
f. Insert the line.cord
OPERATION
plug
(through the adapter, if
needed) in the power outlet and observe the voltage
by
reading indicated
NOTE:
If
the meter pointer swings to either extreme end
of the meter scale the power source delivers direct current.
funher
As a
plug
in
the receptacle. Assuming
to
traveled
the polarity
pointer will now travel
meter scale. Radio
operation on alternating current only.
TEMPI' TO OPERATE
g.
the extreme right
of
Having determined the line voltage through the
procedure given in subparagraph
the meter.
check, reverse
the line-cord
Set
AN/PRC-1
IT
the
polarity
that
end
of
the meter scale before
plug
was reversed, the meter
to
the extreme left
ON
A D-C
of
the line cord
the meter pointer
end
( ) is designed for
DO NOT
POJIYER
f above, rotate the
LINE SWITCH control knob A to the position marked
by
with the input voltage indicated
It
is
not probable that the meter reading will correspond
exactly to any of the input voltages painted
in connection with the
case,
In this
set the switch on the tap nearest the indi.
LINE
SWITCH contro l knob A.
the meter reading.
on
cated voltage.
h.
Remove the headset,
key,
antenna reel, ground wire,
and selected crystal from the upper left-hand accessory
compartment. Insert the phone cord plug in the jack
marked
PHONE;
the key cord plug in
t~e
jack marked
KEY.
34.
INSTALLATION
a.
Optimum performance
lesser extent,
of
antenna and ground installations. Ideally, the antenna
shou
ld
be located in a horizontal plane, at a height
20 to 40 feet above the surface
of
any nearby objects. Further, the plane
should be broadside to the direction in which the trans.
mitter intelligence
be
cut to the following lengths for best transmission and
reception in relation to frequency:
Op
erating frequencies Antenna length
to
2
3 to 7 me
7 to
OF
ANTENNA.
of
the transmitter and, to a
the receiver
is
dependent upon proper
of
is
to be sent.
3 me .................................
...
......................
12
me
·····-······
···
···········
··· .. 50 feet
the earth and clear
of
the antenna
The
antenna should
1
~0
feet
.. 1 00
feet
of
the
AT·
LINE.
the panel
of
12
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