Constructed Test Equipment; Anechoic Chamber - Decatur Electronics SI-2 Technical Manual

CONSTRUCTED TEST EQUIPMENT

Anechoic Chamber

To test antenna sensitivity while it is on the bench, you need to use an antenna test (anechoic) chamber.
Several versions of the chamber are available, ranging from very costly to less expensive. For service work,
the chamber does not need to be expensive. The anechoic chamber is basically a wooden box lined with
microwave absorbent material, such as Advanced Electromagnetics' AEL -.375. Include in the box, either a
feed horn, attenuator, and crystal detector or a K-band horn, lens, and turnstile assembly. The turnstile assem-
bly lets you test the Decatur Electronics line of products. If you need to test other product lines, you might
find it necessary to use a feed horn, attenuator, and crystal detector.
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