AT-640A/ARN VHF Marker Beacon Antenna | 75 MHz

Product Description

The AT-640A/ARN antenna is a receive-only VHF marker beacon antenna used on both fixed-wing and rotary-wing aircraft. The antenna meets 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-PRF-85285. The antenna has an operating temperature of -40°F to 160°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.

Specifications

• Weight:
  1 lb
• Application:
  Marker Beacon
• Frequency:
  75 MHz
• Impedance:
  50 Ω Nominal
• VSWR:
  1.5:1 Maximum
• Pattern:
  Globally Downward
• Connector:
  C Female
• RF Power Capacity:
  Receive Only
• Gain:
  -10.5 dBd Minimum
• Color:
  Gloss White

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

Documentation

• RAMI-Limited-Lifetime-Warranty.pdf