Aircraft Radio Corporation SCR-274-N, Operating Instructions Manual, Page: 28 / 32

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A.N 08-40SCR274-2
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Section V
AN 08-40SCR274-2
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*DISCONTINUED ON LATER MODELS
* * ANTENNA RELAY UNIT
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WEIGHT OF COMPONENT UNITS
RADIO CONTR OL BOX BC - 450-A
AND MOU N
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NG FT - 222-A 2. 7
RADIO CONTROL BOX BC -473-B
AND MOUNTING FT - 235-B 0.9
RADIO CONTROL BOX BC-496-A
AND MOUNTING FT - 240-A 1.7
RADIO CONTROL BOX BC- 451·A
AND MOUNTING
FT- 228-A 0.9
ANTENNA AELAY UNIT BC- 442-A
AND MOUNTING FT - 229-A 2.2
ANTENNA RELAY UNIT BC - 4 42-AM
AND MOUNTING FT -229-A 2.0
MODULATOR UNIT
BC- 456-A OR
(LESS TUBES AND DYNAMOTOR) BC- 456-B
9.0
MOUNTING (MODULATOR UNIT) FT- 225-A 0.7
ONE SET TUBE S
(MODULATOR UNIT ) 0.3
DYNAMOTOR DM-
33-A
8.0
AVERAGE WEIGHT O F P LU
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.
1
3
SHIELDED C OR D S
AVERAGE WEIGHT PER FOOT 0 . 1 7
TUNING· SHAFT MC-215
WEIGHT PER FOOT 0.1 2
COUP L ING MC - 2HA 0.25
* *
ANTENNA RELAY UNIT BC - 442 -AM DIMENSIONS
ARE THE SAME A S FOR THE A MODEL, EXCEPT
THE
6�6"
DIMENSION IS DELETED AS THE
BINDING POSTS SO 01 MENSIONED ARE NOT
INCLUDED.
LBS.
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DYNAMOTOR
DM-33-A
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PL"148 -A
PLUG
PL-151-A
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RADIO CONTROL BOX
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4 INCHES MOOULATOR "",T
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Figure 5-7. Radio Set SCR-274-N -Installation, Dimensions, and Weights of Radio Control Boxes,
Antenna Relay Unit and Modulator Unit
5-13-5-14