scope:

The equipment specified herein has been designed for direction finding in the frequency range of 180 to 10750 mc for the AN/APA-69A equipments and 50 to 10750 mc for the AN/APA-69C equipments. The AN/APA-69 series shall consist of 3 interchangeable rotating antennas, an indicator and a console control unit for use with Countermeasures Receiving Set AN/ALR-8 or similar receivers on Naval or other Military aircraft to permit true bearings to be taken on sources of radar and radio signals. The equipment shall display each receiver signal as an antenna pattern on a CRT with distance from the center of the CRT screen representing magnitude of the signal, and position around the CRT representing true bearing on the signal source.

The Direction Finder Group, Radar, AN/APA-69 series shall consist of the following units.

AN/APA-69A COMPOSITION Type Applicable Item Designation Paragraphs ---- ----------- ---------- Antenna Assembly AS-435/APA-69 3.4.8 Antenna Assembly AS-434/APA-69 3.4.9 Antenna Assembly AS-436/APA-69 3.4.10 Antenna Reflector AT-182/APA-69 3.4.11 Antenna Drive TG-8A/APA-69 3.4.1 Antenna Coupler CU-174/APA-69 3.4.12 Azimuth-Panoramic Indicator IP-81A/APA-69 3.4.3 Direction Finder Control C-527A/APA-69 3.4.4 Mounting MT-1005/APA-69 3.4.13 AN/APA-69C COMPOSITION Type Applicable Item Designation Paragraphs ---- ----------- ---------- Antenna Assembly AS-775/APA-69 3.4.6 Antenna Assembly AS-676/APA-69 3.4.7 Antenna Assembly AS-436/APA-69 3.4.10 Antenna Reflector AT-182/APA-69 3.4.11 Antenna Drive TG-50/APA-69 3.4.2 Antenna Coupler CU-174/APA-69 3.4.12 Azimuth-Panoramic Indicator IP-81A/APA-69 3.4.3 Direction-Finder Control C-1321/APA-69 3.4.5 Mounting MT-1005/APA-69 3.4.13