Red Tail Transponder Antenna

Add to Wishlist
Part# 11-13830


Streamlined Transponder Antenna
Non-TSO’d for Experimental aircraft

The Delta Pop Aviation streamlined transponder Antennas are the best non-TSO’d antennas we have found, and they offer a low drag solution at a good price.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • Frequency - 978 to 1090 MHz
    • <1.5:1 @978 MHz
    • <1.3:1 @ 1090 MHz
  • Polarization - Vertical
  • Impedance - 50 Ohms
  • Connector - BNC Female
  • Mounting - 8-32 x .437” long threaded studs
  • Weight - 3.0 oz / 85 grams
  • Finish - White Polyurethane


as ordered & on time

Montana A Verified Purchase


February 2, 2023

Direct replacement for the king antenna.

Douglas P Verified Purchase


November 19, 2022

Very pleased with this purchase. Antenna will be connected to ADS-B in portable unit.

January 27, 2021

As always, good to do business with you, great company .

David H
July 3, 2020

Great for the price

Bill B
January 16, 2020

I have this antenna and 3 others on my RV-8 from DeltaPop. Com Radio,Transponder and UAT performance is exceptional. They stand behind their product and service is above and beyond all my expectations.

Al R
July 6, 2017

I was disappointed ,it is not as aerodynamic As my old one,they could have make it a lot more aerdinamic. No time to send it back,I would buy a TED antenna for a lot cheaper

Robert C
June 2, 2017


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: Will this antenna work with the Garmin GDL 39R?

Per the manufacturer, this antenna will work with the Garmin GDL 39R.

Q: Will this antenna work with the Sandia stx165 transponder?

For an experimental aircraft, yes.

Q: Will this Red Tail Transponder Antenna work with a KT-76A in an experimental aircraft?

Yes, these will work together.

Q: Does this Red Tail xpdr antenna need a physical ground plane or is it built into the design?

This antenna needs a physical ground plane. It is not built in.

Q: Will this antenna work on a micro air T2000 mode c transponder?

Yes, these two units are compatible.

Q: Dimensions of this Red Tail transponder antenna?

The antenna is 4.5"L X 3.5"h X 1"W.

Q: Can this be used with the DYNON SV-XPNDR-262?

Yes, it can be used with the Dynon SV-XPDR-262.

Q: Can this be used with the Garmin GTX 327?

Yes, these can be used with the Garmin GTX 327 on experimental aircraft only.

Q: Is this Red Tail antenna well suited to the Garmin GTX345?

This antenna can be used on the Garmin GTX 345 for experimental aircraft.

Q: In Features you mentioned Connector is BNC Female. Is this BNC Female, the antenna's connector or the coax cable have to have a female connector?

The connector is BNC female. You will need a BNC male connector on the coaxial cable to tie these together.

View in Catalog

View Image View in Catalog