ANTENNA/Receive only VHF Marker Beacon, used on on both fixed wing and rotary wing aircraft, white, Skydrol resistant polyurethane paint, operating temperature: -40 degrees Fahrenheit to 160 degrees Fahrenheit, 75 MHz, 50 Ohms, C Female Connector, 8 Hole

ANTENNA/Receive only VHF Marker Beacon, used on on both fixed wing and rotary wing aircraft, white, Skydrol resistant polyurethane paint, operating temperature: -40 degrees Fahrenheit to 160 degrees Fahrenheit, 75 MHz, 50 Ohms, C Female Connector, 8 Hole Mount & a Glossy White Finish. AT-640A/ARN
ANTENNA/Receive only VHF Marker Beacon, used on on both fixed wing and rotary wing aircraft, white, Skydrol resistant polyurethane paint, operating temperature: -40 degrees Fahrenheit to 160 degrees Fahrenheit, 75 MHz, 50 Ohms.

The AT-640A/ARN Antenna is a receive-only VHF Marker Beacon antenna used on both fixed-wing and rotary-wing aircraft. The antenna will meet the requirements of Military Specification MIL-A-5999 for electrical and environmental performance. The antenna is finished with a white Skydrol resistant polyurethane paint in accordance with Military Specification MIL-C-81773. The antenna has an operating temperature of -40 F to 140 F and experiences a drag force of 0.22 lb at airspeeds of 400 mph. Precipitation static is minimized through the use of a foam-filled fiberglass construction. The foam also reduces the effects of vibration, shock and temperature extremes.

Product Codes
Mfr Part No:	AT-640A/ARN
MIL SPEC:	MIL-C-81773
MIL SPEC:	MIL-C-81773
NSN:	5985-00-607-6137
SCHEDULE B CODE:	8529.10.4000