Part# 11-05846
MFR Model# AV-74


The AV-74 (.425 Stud Length) & the AV-74-1 (.800 Stud Length) are a broadband blade type antenna for transponders or DME application. The antenna housing is constructed of an acrylonitrile-styrene-acrylic (ASA) shell. The white color allows maximum performance without losses due to color pigments or unseen dirt. The antenna is supplied with cellular neoprene mounting pad and hardware. The antenna is designed to operate at speeds up to 350 mph and altitudes up to 50,000 ft. It has a drag force of 0.09 lbs @ 250 mph. This antenna is a direct replacement for the CI-105.
  • Application: Transponder/DME
  • Frequency: 960 - 1220 MHz
  • Impedance: 50 Ohms Nominal
  • VSWR: 1.5:1 Maximum
  • Polarization: Vertical
  • Pattern: Omni-Directional
  • Connector: "BNC" Female
  • Max Height: 3.4"
  • RF Power Capacity: 2.5 kW Peak
  • FAA TSO: C66c, C74c
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Great antenna.

Bay A Verified Purchase


November 20, 2022

Called Rami tech support for advice on mounting location and they were awesome. I like this also comes with a gasket where the comant does not. Awesome antenna.

Final A Verified Purchase


February 1, 2022


Brm A Verified Purchase


August 29, 2021

Fast delivery, easy installation and economically priced.

Mark R
May 18, 2021

provided as advertised , shipped quickly , came with nuts, lock washers and a gasket.

Brian D
October 16, 2020

Keep up the great service.

Barry S
September 10, 2020

Needed a new antenna for the GDL 82 installation, and this worked perfectly. The added stud length simplified installation through the cored-composite aircraft skin

Jeff B
May 25, 2020

A performer in the antenna market, easy installation and priced right.

August 16, 2019

Installed this with my KN-64 to complete my IFR capabilities. Works great. Haven’t had any issues.

December 23, 2018

Very good quality. I kept breaking the “TED” type bc of the antenna location when I would pull the cowl pins on my RV-7. I decided on the blade type since it is more durable.

Michael K
July 1, 2018


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Hello, Is there a drawing with mounting details available for the Rami AV-74 transponder antenna? The outline drawing doesn't list mounting stud sizes. Thank you, Brian Geiger

Please visit our webpage again and under the documents tab there is an updated pdf with mounting stud sizes and mounting details.

Q: Can you clarify if this is the newer AV-74(-1) version (supporting ADS-B)?

Both versions of the AV-74 support ADS-B. The AV-74-1 is slightly larger and is available under part number 11-13996.

Q: Is this RAMI AV-74 antenna compatible with the GDL-82?

This antenna may work but it has not been tested by Garmin for the GDL 82. Please view P/N: 11-17965 CI-105 which is the same style antenna. You can also view the installation manual for the GDL 82 for more acceptable tested antennas.

Q: Does this RAMI AV-74 antenna require a separate ground plane for installation in a composite airframe?

All antennas require a groundplane of some sort. In the case of a composite airframe, you must install a metal groundplane meeting the fabrication requirements set forth in ac 43.13-1b

Q: We have an old King KA-60 antenna in the documents---are the mounting hole pattern the same for the AV-74?

We have a PDF version of the manual/footprint for the antenna. Please review this document to ensure the measurements.

Q: Can this AV-74 antenna work with Apareo ESGI Transponder?

Yes. This antenna can work with the ESG transponder.

Q: What type of coax cable do I need to use to support this antenna for ADSB out?

We recommend the RG400 Coax Cable.

Q: Will this Rami AV74 antenna work with GNX375?

Yes, part # 11-05846 will work with the GNX 375.

Q: Will this Rami AV74 antenna work with a King KN 64 DME?

Yes, this antenna will work with that unit.

Q: Does this RAMI AV 74 support both ADS-B IN and OUT, correct?

Yes, this will work with a compatible ADS-B transponder.

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