•
RADIO
~
AND
SETS
AUXILIARY
rL
Af;Slf'I
accorda n
il
uthorily
19.4;;.
SCR-194
AprD
CA
TION
Cil \lith
or
w ,n , Circul
17, lW
CA1W·E
p<
1r. \ :;, A
AND
SCR-195
EQUIPMENT
/
ar
I.U~n
I{
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49 •
,
in
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hy
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I
,
,
TlDCHNTCAL MANUAL)
NO).
11
~238
.TJI[
WAR DEPAllTMlllNT, ,
WAflBI
l'Iot'O!'I.
AprU
11-238
11.
11142.
UI13
,!l
RADIO
S
IICTION
I.
II.
SETS
llineral.
Employment.
SCR-IM
Purpose
General description _________
Ma
jor
component parts
Description
Location and selectio n of freq.uencies
"",ttmg
"'-
General operatioll _______________________
Portable operatioll
Vehicular operation
Service _______________________________________ 10
. .
up
AND SCR-I95 AND AUXILIARY
EQUIPMENT
_________________
________________________
of
parts
eqUipment
______
_____________________
____________________________
_________________________
!
·u
__
__
.....
_
_
_
_
_
_
_
_
_____________________
__________________
__________________
___________
____
_____
rll'
/I:
i'
#;)-
...
ph
1
2
3
~
,
,
6
7
8
,
Storage _________________________________
III
. Detailed functioning of parts.
Rad io set
Radio set Se
IV
. Supplemental
Freq
Frequencies and dial settings, rad io receiver and
Parts
V. Remote control equipment R
Purpose
Setting
Operating
uencies and dial settings, radi o receiver and
transmitter
transmitter
SCR-
R-19S
data
l94
and
____________________________
_ __
pa
BC-222
BC-322
list
__________
____ _________________________________
up
and oollnecting_
________ .:_
___
__
11
12
__________ ___
rta list.
__________________________
___________________
___________________________
C-.66.
______
__________________________
__
________
_____
__
_
_
______
_
__________
IS
14
Hi
16
17
18
19
Removing from service
Detailed
Parts
VI. Antenna equipment RC-63.
Purpose
Setting
Operating ___________________________________
H.....
-:;-_IDovmg
Pa
rts
functioning
lisL_______ ____
____
up
. fro .
Iist.
________________________________
and connecting______________________
m servlce_________________________
______
________
1
_________________________
of
_________________________
parts
_
_______________
___
______
M558598
Or
•.•.
UNIVERSITY
Of
___
_
__
_
_____________
1<
..
C/o.lJfORN
lA
20
21
22
23
24
25
26
27
Tl!I(
11--238
,
..
SIGNAL
COflPSl
VII.
VIII
Purpoee
Oem".1
Major
Do!ecrlpUon
________ __________
d
~l
rompo
Carrier FM--32
Purpoge
LIt!tO<lnptlOfl
~
---.
lEImployUlent--
. Bag BG-82.
Purpoge ___
~rlptlOn
~--
.
EdnployUlefll-
pll
o'
'_
___
..
_______________________________ +
.... m
of
JIll
r1ll_
)lfIrtll__
___ _ __
__
___
and
_______________________
_______________________
.
fra
me FM--33.
______________
__________
--------- ------ ------ -----------
___
_____
______________________
.
_________
_________________ _
_______
---- -----------------------------
SEC'J"ION I
GlEINlEIRAL
_ _____ ________ ____________________
________
_ __ _ _
___ _ ___ ______ __________
__
_ _ _ _ _ _
__ __ __
__
__ __ _ __
__ __
____
_ _ ___
Parqrop/l
_ _
___
__
__
__________ 1
_ _ __ _ _ _
___
__________ 4
I'a"VOP~
_ _ _ +
__
_ 28
29
30
31
_
••
sa
__
__
2
3
1.
Purpo8e.~Ra
point-to-point
and
are hi
infantry
2.
General
ghly
regiment, respectively .
portable, loll' power,
transceivers.
voice communiclltion within
deacription.--<I.
They
dio
Ilre
sets
u9i!d
SCR-I94
Radio
high
to
OOffiDlunicate
5 miles. All the equipment required
is
carded
hicular operation
a
mast
scopi
tor'
ng
s back. Radio
vehicular operation
the vehicular
when requ
on the bllck
base
with
tubular
antenna
ired
.
of
radio
meaIlll
the
set
SCR-
of
connection to the
opentor
195
Itntenna used when
set
but
Power
SCR-I94
antenna
aooessorie
for both
does
equipment RC-67, which compr
s,
transmitting
is furnished as a
and
SCR-
sets
I95
are
the
artillery
SCR-I94
intended
battalion
and
SCR-
frequency sets which include
for
transmission
in
ineludes
the
set
not
O\'er distances
and
It
canvas bllg.
stee1
set
mast
~ons
to repJa.ce
is cllrried on the opera-
include
aC<ll:lSSOri
up
reception
For
the
es for
separate
and
receiving is sup-
for
19
to
ve-
a
nd
tele-
i!188
un
it
5
plied by one
b.
Radi
megacycles
dry
o set
lUring
battery.
SCR-ll»
has s frequency range from
two oscillator coils,
400 kilocycle separation."
range from 52.8 to
aWords
•
The
"a~
which
nnl)'
heen
tI:Ie
sa
ehalmels with 400 kilocycle sep
lI.
utborlr.ed ch
n~ed
11.
1110
400 kUocrcle cbanuel
hllY
at
...
400
500
6ri.8
llnn
kllocrdes;
kllocyde
el
me"nu
....
1!Cll
t ,
Radio
:ycles using one oscillator coil,
parlltlon
howen'~r
c
hannel
1ee.
or
2
and
set.
""ale.
SCR-19ri
fIldlo
.
lI1~n:r
Care
Or,~,
UNIVERSITY
affords
lI.fIItio
seta
~nc"
SCB-UH
....
muOl
.1
t....,.,
Of
C/o.lJfORN
<n.7
62
channels
has
a.
frequency
n (see sec.
and
,
~
IulYe beell
be
e~erdaed
lA
SCR-UlI'i
to
I.ned
to
ri2.2
with
and
IV
) .
UIII'
•
,
RADIO
SETS
seR-I'"
M.-o eCR-
U6
TJ(
11-238
,
Then!
design
band
i
~
of
no
and
the
opera
cons
SOR-194
ting
tru
ction are identical except t
diffe
is
l''e
nce between the two sets. The general
covered by two interchangeable
the operator's equipment oonsists of
•
(
hat, the
a.
micropho
UNIVE~\lTY
Of
CAlifORN
frequency
coi
ne
T-24-E and
IA
ls, and
TId:
.
11
238
...
SIGNAL CORPS
•
headset
SCR--IM
operator's
3.
The
two
parte for operation and transportation.
(1)
00-11
HS-22-B
is
handset!>
Major
covered
component
, whereas Ihe frequency band
TS-ll
radio set SCR-l94 and associated equipment is divided into
For
on
portable use the following equipment is carried
tbe
back
of
mitting and receiving
-t---
1.
•••.••
1.
.•..••
1.
....•..•
1.
.•.
I
.••....•..
1 __ •••••••
1._
•••••••
1
___
••
...•
____
. • '
.•.
•.
• .
. . . .
.....
...
• _ _ _ Radio
_. __
• •
An\.enna
..
Bag
Battt!ry BA- 32
Headooet
Microphone
Tube
••
Tube
BG-71-
VT
VT-67
of
the
by
a single ooil and there are provided two
- E.
part..--a.
Radio u t ,
SOR-19.
the operator and constitutes a complete
unit
neel",",
with antenn!, and power supply:
-
AN
- 29--B t .
••••
H8-n-B
T-24-E·..........
- 33
..••.•••
••••
and
__
._
••
••.••••
••••••••
• •
....
•......
trall.llmit\.e r B
__ • __ • __
••••••••••••
------
.
••.••.•••••••
•••••••
••••••••
.
...
.•
._.
__ . __
••.
••
...
..
..
..
C-
222
•
•••••••••
••••••••
••••••
..•
. . .
•.•
••
_._ • • _
WMP'1o
••
....
..
•••
•
radio !Il'It
(fig. 1).-
in
bag
trans·
_"".
."
,,,
>200
.
.."
&00
.
.
..
..
..
..
,
AD_
_ . j
•
__
• N
NoJ.N·.A
__
AN· ......
I
B8-,..A
T-"'A
bo
__
.. H8-
.
T_"'S
IUbolitulOd
-..
2t-C
od
.....
. T-1'I-C.
lor
.)
bo
..
_
...
"'UulOd
T-1oI-D
AN· ...
...
(2) Auxiliary equipment and spare
CH-33 as follows :
L
.....
2
•...
1. ..•.....•
1_
. _
1
__
•••
1 • •••• _
2
__ •••• _. __
2_
...........
~
feet
..
.••
......
•..•....
__ •••
••
........
....
___
.
Ant.mna
Banery
_ . .
__ • Cbeo,"
...
Binding
_.
Bo~
••
C
Tube
.
Tube
Wire W- I26 {or
--
AN-
BA
poIt
BX- 13
CH
ord
CD-I9li
VT
- 33 {
VT-67 {epare) __ ______ • _____
N-B'
- 32 (epa ... )
TM
••...
- 33 •••••••
••••••••••••.•••
apa
--
(
~
- 176 (.pare
•.......
••••••••••.••.••••••••
... ) __
W-~-
S. bu l
lor'
T-_,
1.,
.....
.........
H8-22-S
parts
--
... ) _. ______ •
________
.•
._
•••••
..
_ . . _
__
) •
.•..•••••••••
.............•..
••.•.
___
....
bo
...
botl •
-
----
.........
._.
________ _
....
AN·..c
.
.,t<Id
an>
..
• • _
•••
_.
__
... _ ..
lor
10 _ lUI
_OJ'
Total
....
.....
2S.
lor
T·"'Z
carried in chest
--
-
__
..
.
."
...
••
·
•
_.
__
",00
,&
10
.....
.
.
..
..o'
"
.
..
...
.
..
.30
,
_.
'AD
.......
(Ne
AN·lIP
~_A
.....
bt
..,botl
.....
_ P: , ...... J
.ulO<!
<.
Ior
..
\
I~I
_
AN_S,
•
bu
...........
Or,~,
UNIVERSITY
.11<"",
Of
AN·..c
C/..tJfORN
IA
1--
10 _ ...........
--
Total
M
14
IorL.b.lo
b.
Radio
let
RA
'OIO SET:> SCR- I U " NO sca - ue.
SC
R-
J96
(fig. 2)
.-
The
ra
dio set
TM
....
SCR-191S
11-238
and its
9 )eiated equipment are divided into two
tran
BG-71
mitti
s
1 _____
I .
I
I
2.
1.
I
L
sportation.
(1)
For
on the back of the
ng
and
¥ (2) Aux i
pare
..
.. _ ..
... _ ...
parte
••••
____ . __
______
__ .... __
___
.. ____ . __
.... ___
._ .__
._ .
__
..
. _. _ __ T
__
_...
_.__
. _
portable use
l'eOOivillg
liary
are c
..
__
___
equipment
arried
A.u.pte
Antenn.
Bag
B.ttery
H.n
Radio
ube
Tube
r 80-1>2
BG-7L ________________________
dset
receiver
VT-3:L
VT-67 ______ . _
th
e following equipment is carried
opemt
unit
with anrennll and power s
in chest
___
AN-
BA-32
TS-II
30-
________________________
-E , ____
.nd tr.""mitter
••
____ _
or and constitutes a complete
neceSSllI'y f
CH-33
__________________
B , _______ ____ ___________ _
. _________ __ . _
•• ___________________ _
••
___________
or
as follows:
B
par
vehic
C--
3Z2_
._. _ ••
ts
ular
___
_____
....
•..
for
operation and
upply:
operation and
11'0.1"
_ •
__
_
••
__
__
. _
__
_
in
tran
1.
bag
__
."
. 00
.00
'
12. 00
3.
.00
.>0
.
s-
00
>0
' &
"toun.
'a
...-
QuoDtI',
L
------
,.
---
2 _____________
L __
--------
L -
_._----_._-
-
----------
'---
L
2
2._.
2_ . .
-
.-------
._._._.
_.
.....
feet
A N-301I1&7 be
~l/-A.
----
--
---_._._-
--
-----_.
___ ...
___
.
._-----
. . -
. . _
_
----
_-
..
"
...
I1o<I
TI
H I-
R.
Antenn.
B.ttery
Binding
So>
Cheflt
eo",
M
M
MM
Tube
T
Wi..,
Mt
Mt
o'"
aX-1
C
t
"""tion
W- I U
,u,,",
TII-H-C,
CH
D-19~
b_
"""
VT
VT-67
Ior."toun.
AN-
BA-
,..,
tion M8-1>O
- 33
30-
32
TM-176
3 ______
-33
________
_
.
MP-Z2.
M
("pa..,)
(o
pare
,
,,
AN_B
TII-H
_D
..
'
"~
(sp&re) _
B
•
(8J>.re) _
___
___________________ . _
___________ _ • .
S-51
.........
______________ .
"
_____
spare) . ____
spa..,)
TIJ-ll
8pa""
. (N o A
_' '*" be
.
-
----
. .
---_.
) .
______
_ . •
__
N_A
"'boll,,'.'""
---
. . . . . ----
. _._
__
._ •.. _. _
__
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._
. • . . . _
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--_
) ..•..
W-
"
9)
.. _ ..
___ . _ ..•......
__
---_
..
. . •
........
_.-
_._ ... _
----
__
...
..
h
._-
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-_. -
__ ._
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--
..
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boon
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Total
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W
",h,Ifl
TotaJ
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•
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00
•
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00
,.
·
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·
30
•
...
"
4.
Description
'lJO-m
and
transmitter
and BC
of
-Sfe
parta,
(figs. 3 to
--a.
11
Radio
recd
!ler
~
and
incl.) .- All elements
tT(nllf1nitter~
of
the
reeeiver
are chassis mounted and contained in an aluminum-
•
Or.
,",I< "
UNIVERSITY
Of
ClillfORN
lA
TM
11-238
•
•
-
•
of
-"
2q
•••
•
.,
"
u·
,
......
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,
•
•
j
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•
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-
1
-
,
-
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•
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,
•
,
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,
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•
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,
•
•
,
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•
i
,
•
•
•
~
"
•
•
,
"
•
alloy case. 111is
from which
Iilrllp,
bf"u.ery
I)Jug
an
in
in t
it
antellna mounting, and
pillet. Connection to the baltery
he
bottom of
unit
deri\
isdesiglled to
'1\t
ilS
power.
th
e cha
(,
6t
Th
two
ssiH
6
dil'fl(:tly 0
e case i
strop;! which serve to hold the
lind '
Il
UNIVERIITY
11 top of
ll
fiued
i
~
completoo t
socket in t
0.'9,,,..1
fr
n
Of
CAliFORNIA
II
b.uel1'
wi
th a carrying
he
top of
BA
hroug
--32
h
II.
th
e
•
,
"
RADIO S
ET
..
SCR- i U4
AND
SCR- \
US
TM
11_238
•
I
I
battery. Aceess'w the
!h e
li
Mp
oXlils
radio sets
IId
diti
mounted on
0
11
the
is closed,
To remove the tube
slid es at t
filly
ona
l s
chllssis.
and
he
sides aud opening
then
SCR-l94
be
instu lled or removed.
and SCR-195 hav e devices added
upport for
th
e inside of the
TI
~
c
the sp
ring
VT-33
top
of the chassis
the tubes.
top
ap
fi
ts
over the
clamp
fits Il
(rom the ciamp, the le\'er
may
the
Th
ese consist
cover,
lin
d a spr
tube
round Ole ba
be
gained by relea si
cover. Tu~
Lat
est
VT
se
procurement
of
an
insulating
ing
-67
cla
when the
of the tube VT-33,
011
s
and tuning
s of
to
provid e
mp
mou
nted
cover
the side
ng
ca p
of
I
Y'oG"
a._Ha ~
the clamp is
The
openi
side
unit,
both
is
e1I'
chllS!lis
ng the front
of t
he
except
receh'ing
chan
ected
ged
by the
lo
...:e1>'01'
pr
essed with a pencil, acrew driver, or si
may
elise
for
and
from
reillY
ond
t
...
n .
...
U~r
flC-~2~.
balte
be
cover
and
r1
.. , ....
and
removed to f
and taking
one
in the rear.
..
acilitate
a few minor items,
tran
~eiving
smitting.
to
UK
- 10, which is
11
tr
llllsmin
7
Ute.lor ,-....
te
.....
_
~"tl"l
ins.pection or re pair
out three
The
employs
screws, one
receiver
the
le operation
ing
in
turn
UNIVE~\lT Y
by alt
Or;gtr
cont
.Iff"",
Of
CA
Ilw
..
l,..
.
milar
and
SIlm
tran
e elements for
of various el
ernate
rolled
lifORNI
connections
by
the
A
co,
rl''''
at
smitte
ements
.Dd
object.
by
either
r
swi
tch
TM
11
-238
•
SIGNAL CORPS
•
"au
..
4,_II..dloo
0'e<.'01
...
. .
~d
_I.
t
...
~."'HI~,.
~·llh
4
00
I
IC--ZZlI.
k.
ou\>CIt.loI""
(.ont
..
«I, .....
OO
b'O,·ed obowln.
,
dial
8
<
•
o.>9"olff"",
UNIVE~\lTY
Of
CAlifORN
IA
TM:
11-238
on
Ole
teewr
circuit.
justlllent,
and fila
cates
microphone or hllndset.
and radio -frequency oscillator in
Contro ls are p
ca.
libration 8witch,
ment switch. The meter on the
the l'oltage
to conneet the I
b.
DWl ,e
BC-322 are
ak
eRch
RAD
IO SET;; SCR-
The
ro\
on
the
lIIlId!;e
t or headset and microphone.
ploftl.-Rn
'ided
fila
ments,
dio receivers and transmitters BC-222
llS
ca
libration adjustor,
provided with H dial
I'H
!le
ANI)
t
Usell
a.
SC
R- I U
a superregeherative de-
modified form of Hartley
follows: chlumel
and
left
the
!<Cale.
aide
!IOCkeL
which is mark
•
or
frequency
fil
ament rheostat,
of
the panel indi-
llt the r
ight sent
ed
and
off
IId
eR
in
-
I
r
400
are
cured
screws. U
interchange
screws,
Tllbles
(
kilocycle subdivisions and printed on a metal plate. Many sets
equipped a.I
to the panel, one o\'
se
int
erehllllbte
of fl'l!quenCi
Ea
rlier sets were
of
Ole
!!O
with a
the
400 kilocycle scale only is now
dial scale
the dilll
es llnd dial divisions
provided with
600
er
plates
kilocycle scale, the two scal
the other, by means
of live
auth
it ill
sc
ale plntes, and replace
necessa
a.
reversible
are
ry
to
gil-en
ce
remo\'e the five
in
lluloid dial scale
es
being se-
machine
orized. To
th
e screw
IieCLio
plate.)
e. A
an
nte/l1l
al
AN-
e9-
B
~
AN
~
B.-&ch
antenna
con
assembly of telescoping mmiel metal tubes which, when in use,
9
s.
n
IV
sists of
.
(
Or;gtr
UNIVE~\lTY
.Iff"",
Of
CAlifORN
IA
TM
11-238
•
SlGSAL
CORPS
,
are
th
of
9Cl'(!wed
e case.
into plsce on the insulated antenna mounting on top of
Th
A.N-29-B dr
e radio set
aw
n o
ut
SC
R- I
94
usiug coil
largest or lower sections using coil
SCR-195
dra
wn out. The c
antennas are e:rtended to the pro
is operated with a
alibrat
ion of eith
ll
eight
per
is operated with all
C-
17-i
, marked A; with
C-175,
see
er
set will be oorrect onl y if the
lengths
marked
tions of
at
all times
D.
antenna
tw
The
eh'e
sec
radio set
AN
or
operated
tions
th
e ten
-3()...
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,
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parograph
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u
o.:-
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~n
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sec
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or
_ltI""
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•
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.I!~
.
ribed
....
,
In
•
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d.
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~I
sre
M
ma
de of high tensile stren
S--51 Il
re fitted with
sleeve snd
n blunt
point
u
climlil
th
read
MS-
lit
the OIh
J9
It
split sluUlk and screw lit one end lind a
at the upper end.
, It/S-1W.
l,rth
er.
M~t
Ends wh
10
alul lt/
S-.'.i/.-
steel. Mast
section ,\1
ich lire joined in
Or;gtr
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Of
Th
ese
lIla
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8-49 tenninat
CAlifORN
IA
st sections
MS-OO
and
!lOC
el!
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mbling
ket
in
RA
DIO SETS SCR-
I9
.
AND
SCR-1911
Tl!il
11-238
•
r.o.;l:0 S
._
Rodlo
.... 1"'
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ol>d
pi",
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bo.\t~r,
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11-238
•
SIGN
AL
CORPS
,
,
12
Or;gtr
UNIVE~\lTY
.Iff"",
Of
CAlifORN
IA
•
TM
11-238
RAbIO SE'l'S SCR-
have enameled
is 6Ilameled black
When
SeR-I94,
each
binding
W-l26.
9 feet
it
is
an
of
sections M&-49, MS-5O,
posts TM-176, one m
The
411,
4,
lower section.
and
MS-IH
marks
desirOO.
of
and
bears
to use a vehicular
antenn.a equipment RC-(j7 is
over-all length
inches from the top
The radio
for
use
in
vehicles.
sections assembled is 6 feet
shoulder
e. Ma&t
of
the lower section.
base
MP-f2.-The
the
lIlt
sam&
the
type number
AND
color.
SCR-IIl~
The
antenna
1llj(lOj.
ast
of
and
ba
the
to
MS-Ill.
se
MP
-22,
three
mast
the bottom
set SCR-195 include8
3%,
The
inches from the
mast
over-all length
base consists of a ceramic
•
body
near
It
and
sections assembled
of
mast
top
of
each section
the lower end.
with
the
It
radio
includes two
also includes two
10 feet of wire
the shoulder of
sections MS-:iO
of
these two
to the bottom
of
set
is
the
the
in-
sulator
tion
fastened
of
the
to
a steel
antenna
through
provided in the top of the
The
transporting
plies all the necessary
in
and
approximately
two
able use
web shoulder
three
steel
f.
Battery
the
the
or
g.
Bag B0-71
plate
top for
set.
three times
of
compartments, the
is designed to
vehicle.
BA-.'ffl.-This
making
Under
continuous operation the
20 hours. When used intermi
as'great.
radio
(fig.
seLs
12).-The
SC
straps silpilar
set
ali eleetrical conneetions required between
R-I94
main
plate
in such a manner as to
pennit
8n angle of 180°. A metal socket
insulator
pennit
is a block
voltages. A
canvas
and
to
those on the haversack.
one being used
to receive
fa
stening
battery
6·point
carrying
SCR-195.
mast
to
section MS-61.
an
upright
so designed
socket is
life
ttently
It
for
of
this
the
bag
is
has two
carrying
that
life
for
It
rota-
i8
on
the
it
sup-
provided
it
battery
may
the
is
be
port-
adjustable
comprises'
the
radio
receiver
and
operation.
carrying
the
1 headset
1 microphone
and
II.
pocket on
AN:..w-B.
the bag,
there
be inserted
to
the
weather
the top
set
and
of
transmitter
The
follow
RodW
other
ing
,~I
8O~19~
HS-22-B
the
To
permit
is a hole in the top
in
the
set
panel
Further
BC-222
or
BC-322 complete
compartmenLs are a pocket
equipment; •
1
T-24-E
aide
operation
and
a slide fastener in one side to
for
to
carry
of
of
prot
2 handsets
ing
the
the
ect the
when not in use, an additional
the bag.
This
Bap may
be
Rodw
«I
adapter
the
set
bag
antenna
while being
so
that
equipment
Dap
flLlltened
and
in
8C~J9~
the
ready
rear
S()....52
TS-ll
-E
AN-
29-B
carried
the
antenna
permit
in
inclement
access
has been added
down
with
the
tor
for
or
in
may
to
two
13
Or,~,
UNIVERSITY
.11<"",
Of
C/o.lJfORN
lA
TlI
11-238
•
SIGXAL
CO
RPI!
,
"""'
•• la.-
,
Bcu;
•
14
• .
UNIVERIilY
Of
If,
(~
lIFORNI~
TM
11-238-
•
RADIO
end snap fasteners,
turned ba
fastener.
ck
into a double fold
It
is
important
SETS
or
when the anten
SCR-
and
that
a double fold be used because a single
l\14
AND
na
SOR
-L
9~
is
being used
it
..
ma
fastened by the one center snap
y
be
fold results in snapping the fastener together inverted. When so
fastened,
tearing one side
h. Bo!};
boll:
provided with a
radio receiver Ilnd transmittel' BG-222 or B
posts,
necting separate
available. and to facilitB
cireuits.
the
BX
and
Il
battery cable.
The batteri
force necessary to use
of the fastener from
-13 (fig.
13).-This
soc
ket which fits the plug
It
consists of a
is designed to provide means
batteries to the set
fAl
the inse
es
aI'S
connected by means of the cable, a
to
the
unfasten it
bag
.
tid
mll.y
rectangular metal
at the bottom of the
C--322,
ill
case there is no battery
rti
on
of
meters in
several binding
rosult
of
BA
th
e several
ll
leads
in
oon-
-32
•
of
which are identified by stamped metal
posts, f
to indicate microphone c
plate
I
MPORTANT:
eously conneet
markoo M
connected with a
circ
a.s
thi
Caution: When making
BX-IS,
If
thi
sumultanoous!y. Do not
co
nnections even if the
our
on eit
her
side, serve to provide
urrent
,·oltage.
If
it
is
desirod to use this
uit
s.
IC
Do
ing
RO.
not
meters, each of the three pai
CU
R.,
RELAY
jumper
w
i~,
jumper the bind
s will short-circuit the battery.
or
changing jumper connections on box
be
sure tJlat the battery cable is disconnect
s is
not
done,
it
is difficu
lt
attempt
fil
alllent switch is tUnied off, unless
, relay
CUR., and
otherwise
ing
to avoid burning
to
markers.
~ady
cu
rrent, plate
connection of meters
box
rs
PLAT
th
ere will
posts marked
ed.
make
or
change these
TI
le
binding
cur
rent, and
witho
of
ut
simultan -
binding posts
E CUR. must
be
three open
PLATE
VO
LT
from the battery.
out
the
two tubes
jumper
the
be
S,
battery is disconnected.
(1) To provide operllting batteries if bat.tery
BA--32
is
not
avail-
ab le, the following Signal Corps batteries are suggested from among
th
oaa
which may be on
,~,
A (Ii!&mentl
B (
pl"te
e
(gri
dl ___ _____________ _ 13.5 _______________
M
(microphonel
___
. _________ 3
) _______________ _ 144 ______ ___________ ___ 6 B
__________
(2) The following cu
normal f
or
the
rad
io
hand:
___
___________________
4.6 __________________ __
rrent
sets
and voltage readings (approximate) are
SCR-194
and
SCR-19l'S:
__ __
2 BA-17
A-S.
3 BA- 27.
lIlA
- 27.
Or
BA-23.
Or
•.•.
UNIVERSITY
Of
1<
..
C/o.lJfORN
lA
TM
11-238
•
R
eceiv~
Transmitter
Tra
Hela
. "
MIcrophone c
Plate
A variation of plus
i.
Ad
apter
fitt
ing pro,'id
two
90Ckets
r
plate c
nsmitter plate current
y cur
rent
"olt age
SO-6
ed
simi
e (
with a plug similar to plug p L-(;5
lar
SIGNAL
urrenL
plate
current
______________
______________________________
urrent
_____
CQ
RPS
milliamper
(modulatetl)
(u
nmooulated)
___
_________________
______
-<lo
____ Ao ___ _
do ___ _
uo ___ _
_______________________________ "ol
or min
fi
g.
us
10
14).- T
percent
is
he adapter
permi
consis
ssi
ts
ble.
of
on
to
90C
kets 8Q.-45
on
the other. A
e!!
__
___
_
21.5
45.0
35.0
18.6
35
to
60
ts __
IS
a.
small metal
one side and
ll
wmng
•
'
lS
within
T
S-ll- E, provided with
simultaneously. T
th
e P/luel of the
sockets
too
of
fitting.
nd
Th
e
he
plug of the
io
re\:
eiver and
uuit
th
se
l'\'e
e radio set
Ild
tnll
the adapter aceummodate the plugs
handset cords.
j.
lleatilJ
el'8
special c
o,'er
adjustable to fit
be locked in place. The
pl
This
(si mil
the welirer 's head and a lenther strap
ug PJ.r...51i
headEet
ct llS-tB-
ar
to
receiv
a.p
and a cushion M
the
which fits into 8
is
wearer by means
pa
rt
B (fig. lli)
er
R-14 exce
he
.-
The headse t
pt
C-
14l) ath ched to a s
adset cord C
jlLck
JK
of the radio set 8CU- t94.
combine light weight with <:omfort a
~
to enable the two handse
8C
np
ter
smitter U
that
R-196
fits into socket
each
C--322
on
con!!
is
, to
be
connected
80-45
, and the t wo
the end
ists of two receh·,
equipped
trap 8'1'-20
below. The Illtter is
of
a sliding s
D-WI
--38
nd
on
Ill
ay be wo
the
is
loo
,'e which may
te
rminated by a
mi
crophone
It
is desi
rn
und
brned
er
l.ll
on
of
the
wi
th
to fit
cord.
to
a hilt,
I
II
helmet,
or
with a
b"lUl
(
mask.
16
Or~tr
UNIVE~\lTY
olff"",
Of
CAlifORN
IA
,
•
RADIO
SETS SCR-
i114
A."D
se
R-
iIIS
TM
11-
•
238
,
I
k.
M
it.
:
rop}IO'~
hand
cordage
mi
crophone with a !lII
CD-146
headaels H
connection
microp
hone
S-22-
to
the radio n!Ceiver
is
pllrt
T
,
-24-
II
ja
E'
(
fig
. 16).- T
'itch to which
ck J K-38
(for
he
mi
crophone comprises a
is
connected a cord
the attnchment
made of
of
one or two
B), a radio frequency choke and II. plug PL-too for
of
the radio set
find
Se
transmiuer
R- I
\)4
.
n
C--222.
Thi s
•
~II72·_
n
_
~.
(
17
Or""
UNIVE~\lTY
.
If,
Of
CAlifORN
'"
IA
TM 1
1-
238
t.
Halldue T
ment.,
It
s cord
•
II
IIWitch, lind
is
identical with t
S-Il- E (fig.
II
high
SiG~A
17).-T
L
COR
his consi
PS
st8
of
II.
microphone ele-
impedance receiver mounted inlegrlll1y.
hat
of
microphone T-
24-
E
exce
pt thllt
<
~"
<IC"
18._
C_,
cu
..-a
""
.bow">6
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",,'>""10".'
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..
,
_
18
Or""
UNIVE~\lTY
.
If.
Of
CAlifORN
'"
IA
TlIt
11-238
RADIO SETS SCR-
jack
radi
by
of
of
incorporates a radio
a
JK-38
o receiver
means
each
radio
m. Oord
the
same
socket
80-86
is not includeod. (Connection
of
and
an
transmitter
adapter
set 8CR-19!i.
OD-1M
type
(figs. 1 and
as
that
frequency choke, a
on
the
nse the microphone or
set
than
fl.
videod
antenna
their
BiMiWJ
to
alford
to
the
cords allow.
po
rt
TM-176
a means of oonnectinjl the lead from
radio
!let.
80-52.)
used with
oth
er.
handset
(figs. 1
Wh
en so em
Uf
AND
OCR-US
of
BC-a22 in
Two
2).-This
the
It
is employeod when
at a great
and
2).-The
ployeod
this
of
these handsets are part.
is a
microphone
plug
PL.-loo
er
distal\ce from the
it
&....(I
two
handsets to
the
case is accomplished
12
-foot
binding
is
exTen
and
handset.
on
one
it
is desired to
post is
th
e vehic
IICreweod
sion
cord
end, and
radio
pro
ular
into
insu -
It
-
lator
videod
divided
to
ported.
ried in the same
from
Loeatlon "TId
!leUI".
aeneral
IN
o.
Ohest 0 0
for
the
lid
-96-A on
carrying
into
four
to
The
the
-33
(fig.
compartments
prevent
mast
cOffip>t
by a wooden block. .
IleleerlQI)
up
equll)[)}.mt ______
opel'8.tlol) ___________
Porlable operatton___ _ _
cover of
18).-Thi
auxiliary
movement
the
I!I!t.
s is 1\ reclangu
and
spare
as
illustrated, and
of
the c
equipment.
base MP-22 shown in
rtment
as
tbe
box
8J:CI'lON
BX-13
IT
EMPLOYMENT
f)f
t r
eqllllnd""________
__
___
______ ______ _________
______________
__
___
_ _ ___ ____
___
____ _______
___
_______________________
lar
ontents
front
and
~__
_
___________
wooden box pro-
The interior
pads
while being
of
the
sepun.ted
_____________
__
___________ ____ 6
are
chellt
_
_____
__
fastened
tran
ill
there-
P
.......
_
___
___
_ 8
is
s-
car-
ph
II
7
.
VehiCU
8enlcll
SIQrage
location
determined
area. between
vated
lIS
lar
_________
__________________
!i.
Location
poSitions
the
field
operatloD
c__________
.... ithin
by
military
transmitting
stnmgth
__________________________ __ __
and
any
with
elevationa, ridgea,
tween
miles
as
pennissible.
or
tl'ansmitting
or
more
the
This
hills lie between
__
___ ___
__
_____
___ _______________
selection
givell
ot
area
for
requirements
line of si
of
the
signa
and
~iving
ght
l is affected
and structures,
and
fTequency
the
receiving points. W i
or
channel chosen lIhould
is
particularly
selected loeationa.
_____________________ 9
___
______________
_ _
_____________
trequencies.-The
uperation
snd
the kind
of
points.
between
poin
ts
considerab
as
well
lIS
by
th
true
if
irregulllr
At
frequl:lllci
___
_______
this
of
In
are
the
ra
nges
terrain,
______
most s
set
terrain
gene
__
_ __
__
uitable
will
in
ral
1U
11
be
the
, ele-
advantageous
ly
by
ground
distance
of
be
be-
8 to
as
low
ridges,
es
in
the
,
ti
19
0.
•.•.
UNIVERSITY
Of
1<
..
C/o.lJfORN
lA
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