AN/APN-6

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

MIT Radiation Laboratory Report 554

AN AIRBORNE S-BAND RACON FOR ROOSTER OPERATION

June 28, 1944