The AV-22 is a rod style transponder antenna utilizing its BNC connector for mounting to the airframe. The antenna is designed to operate at speeds up to 350 mph and altitudes up to 50,000 feet. It has a drag force of 0.41 lbs @ 250 mph. It is a direct replacement for the CI 101.
Is the RAMI AV-22 certified?
Yes, the AV-22 is certified (TSO'd).
What is the difference between the AV-22 antenna and the blade type AV-74?
The AV-22 is your standard transponder antenna where the AV-74 is intended for transponder or DME application with a higher speed rating of up to 350 mph and altitudes up to 50,000 feet.
What is the difference between AV-22 ans 11-17970? Would the performance be similar?
Both antennas are similar in construction and performance wise.