File:Searchlight Control Radar (SLC) c.1943.tif

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Description
English: During 1942 and 1943, the Canadian National Research Council designed and built this microwave-frequency Searchlight Control radar.

The radar system is on the left, with most of the operating equipment in the box behind the parabolic reflector. On the right is the operator's cabin, with a window that allowed the accuracy of the radar to be checked.

The system featured a lock-follow system so once the operator selected a target the system would automatically follow it. The project was cancelled when it was found the automated motion caused the operators to get motion sickness in the enclosed cabin.

This version is slightly cropped from a larger version provided by the CNRC. The original shows what appears to be some hand-editing to remove the background, which can be seen around the leveling jack and wheels.
Date circa 1943
date QS:P,+1943-00-00T00:00:00Z/9,P1480,Q5727902
Source emailed to me by Meagan Sylvester at the Canadian National Research Council
Author National Research Council

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Public domain
This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following:
1. it was subject to Crown copyright and was first published more than 50 years ago, or

it was not subject to Crown copyright, and

2. it is a photograph that was created prior to January 1, 1949, or
3. the creator died prior to January 1, 1972.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

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