SCR-296A* 700 MC Coastal Defense Radar
Consists of
BC-716 Radar Receiver, 700 MC, 14 tubes
BC-717 Xmitter 6 tubes
BC-718* 3" Oscilloscope 3AP1/4 & 6 tubes, azimuth display
BC-719 5" Oscilloscope 5HP1 & 19 tubes, range display
BC-720* Modulator 8 tubes
BC-723 Range Unit two 6SJ7
BC-724 Power Drive
BC-725 Calibrator TM 11-1048 1942
BC-726 Calibrators I-147, 156, 168 3 tubes TM 11-1128 1943
BC-1286* AGC Unit U/W BC-716, RA-49 P/O SCR-296A 1943
BC-1296 Range Control Unit U/W BC-723 Range Unit, RS-296
BC-1297 Position Xmitter. C/O Potentiometer RS-296, FT-336-A
BD-106 Switchboard or duplex panel
BD-108 power control panel
RC-136 MK 3 IFF Set, 157-187 MC U/W MPM-4, SCR-296A
BE-82 cabinet
RA-49 regulated rectifier power supply, TM 11-1105, 1505
RA-50 high voltage rectifier
RM-36 control unit
I-110 azimuth indicator
MG-16 motor generator
The main cabinet for the radar transmitter-receiver is a metal
rack about six feet in height containing five slide-in drawer units
on the left and a narrow compartment on the right running from top
to bottom containing coax stubs tunable with rack and pinion.
The manufacturer is Western Electric.
There are a number of aspects of the three nomenclature
systems, the way they were implemented, and the effects of
wartime events, that can be very confusing. First, you will find
a mixture of two or more nomenclatures in the same system! There
was at least one Army radar, SCR-296-A, that included a Navy I.F.
strip, CAOS-50AEY (see Modification Work Order 11-1505-1).
Additionally, various AN nomenclatured systems contained either
Army nomenclature or Navy nomenclature components.
SCR-296-A Fixed Medium Wave Coast Artillery Fire Control Set
SCR-296-A
| DESCRIPTION: |
Fixed Coast Artillery gun-laying medium wave radar, assigned to
modern 6 inch or larger batteries. |
| USES: |
Set is designed to track a surface target in range and azimuth.
Data are sent to the plotting room and used in firing. An
SCR-296-A normally is assigned to one battery, but may furnish data
to more. Works with IFF RC-136-A. |
PERFORMANCE
AND SITING: |
Range is shown on "A" scope. The target is tracked in azimuth with
a pip matching oscilloscope or a zero-center meter. Range accuracy
is about ± 30 yards while azimuth accuracy is about ± 0.20 degree
under the best conditions. The set has a dependable range of
20,000 yards on a destroyer size target when employed at a height
of 145 feet. Site should be not less than 100 feet above sea
level; 150 to 500 feet is recommended. |
| TRANSPORTABILITY: |
Shipment includes areas and separate generator. When crated the
total weight is 91,763 lbs. Largest unit is 5,270 lbs. |
| INSTALLATION: |
SCR-296-A includes a tower, an operating building, and two power
plant buildings. The tower is obtainable in heights of 25, 50, 75,
and 100 feet. Concrete floors must be put in locally. |
| PERSONNEL: |
Operating crew consists of 5 men in addition to a power plant operator
and maintenance man who should be available at all times. |
| POWER: |
Primary power of 2.3 KW is supplied by PE-84C -- commercial or
auxiliary 110 V, AC single phase. Generator needs high octane gas. |
