15 December 1965
ITEM NAME: CODER-DECODER GROUP
Mounting: The cabinet containing most of the
Indicator as a target IFF response. Provisions are
Coder-Decoder Groups components may be
incorporated to differentiate between Mark X IFF
located in any convenient position within the
response, decoded response, and IM-99 response.
limit of cable lengths. Also, the six controls are
RELATION TO SIMILAR EQUIPMENT
mounted on the Radar Set Plan Position
Indicators by means of plates.
Cabling Requirements: Cables not furnished are
recovered from the existing IFF system
Power Requirements: 115 plus or minus 11.5v, 50
installation, or fabricated from material on hand
to 110 cps, single ph, at 2.6 amp, maximum.
to satisfy the installation.
Operating Temperature Limits: 29C to 52C (minus
20.2F to 125.6F)
Related Equipments: The Coder-Decoder Group is
Input Pretrigger: Precedes radar main bang by 37.2
designed to operate in conjunction with the
plus or minus 1.0 usec
programmer and readout equipment.
Coder-Decoder Group also integrates with the
Adjustable between 150 and 125 pps
IFF equipment of Radar Set AN/FPS-3, Radar
Set AN/MPS-7, or Radar Set AN/FPS-8 to
provide SIF capabilities to Mark X IFF.
Siting: Provisions have been made in the radar
installations AN/FPS-3, AN/MPS-7, or AN/FPS-
8 to accommodate the Coder Decoder Group.
PRINCIPAL COMPONENTS AND PHYSICAL DATA
Video Decoder KY-275/GPX
Power Supply PP-2191/GPX
REFERENCE DATA AND LITERATURE