Description
Object description
Components for American AN/APR-9 Elint receiver, Early Warning Radar including: Tuner Unit Type TN-128, Tuner Unit Type TN-131, Ttuning Unit Type TN-129B, Indicator Unit Type ID-226A and Amplifier and Detector Type CV-43.
Physical description
a). Rectangular metal box painted black. Carrying handle to the top of front face.
Front face has Power input/output, and three dials. The smallest is white and marked P-103, the middle one is red and marked P-102, and the largest is black and marked P-101.
There is a metal plaque attached to the front face. There is a dial covered by a piece of glass, which currently reads 40 39.
A calibration record is also attached to the front, with dates from 1960 to 1964.
b). Rectangular metal painted black box. The paint on the main body of the box is textured. There isa carrying handle to the top of the front face.
Front face has Power input/output, and three dials. The smallest is white and marked P-103, the middle one is red and marked P-102, and the largest is black and marked P-101.
There is a metal plaque attached to the front face. To the right of the plaque is a dial covered by a piece of glass, which currently reads 779.
c). Rectangular metal black box, with textured paint. Very dirty. Carrying handle to the top of the front face.
Front face has two dials, the smallest is missing the cover, and is marked P-103. The middle one is also missing the cover, and is marked P-102. The power input/output, marked 101, has a cover, which is removable. This is made of plastic, and is metal bound.
d). Black painted rectangular box with a silver coloured metal base plate. There are two power input/output connectors on the back of the set, one larger than the other.
On the front face there is a white coloured viewing panel in a protruding cylinder There is an ON/OFF dial to the upper left corner.
Other dials are labelled H. GAIN, INT. MOD, FOCUS, V. CENT, H. CENT, and INTENSITY.
There is a reset system behind a screwed down metal panel. There is a counter measuring KILOMEGACYCLES, which is set at 100.
There is a MOD RECORD T.R. label attached to the front, numbered 1 to 20, but with no dates.
e). Black painted rectangular metal box, with textured paint. Carrying handle to top of front face.
There is a power input/output to the bottom left corner. Other connectors are labelled: AUDIO OUTPUT, P516, 2 ND DET DC, VIDEO OUPUT (2 outputs) PAN OUTPUT P515
IF INPUT P501.
There is a red and white sticker at the bottom of the front face.
History note
APR-9/ American airborne Elint receiver to detect enemy radar emissions.
A). Painted on metal plaque.
b). Painted on metal plaque.
c). Painted on metal plaque.
d). Painted on metal plaque.
e).Painted on metal plaque.
Red and white printed sticker.
a). TN-128/APR-9
No a (s) - 10728 U.S 329:CBY
b). TN-131/APR-9
No a(s)-51-222 U.S 1682:CBY
c). TN-129B/APR-9
NOas 53-655 U.S 505:CBY
d). ID-226/APR-9
NO as 51-605a U.S 1246 CPK
e). CV-43/APR-9
NO as-51-605a U.S. 1206:CPK
P514
Sticker: Overhauled by N.A.S. QUONSET PT