AN/APN-6

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AN/APN-6, also known as RAS , is a range-coded, airborne, S-Band beacon which replies on the standard beacon frequency of 3256 mc to any standard airborne radar operating in the SA Band 3300+- 33 mc. The equipment was developed at the request of the services for us as a "Rooster" whose function is to call friendly aircraft to an enemy objective. The requested range performance was 100 miles; however, it was found that ranges of at least 200 miles are readily achieved within the weight limitation of about 100 lb.

Additional Information

Adobe PDF icon.png MIT Radiation Laboratory Report 554

AN AIRBORNE S-BAND RACON FOR ROOSTER OPERATION
June 28, 1944