Here is a new series of aircraft antennas specifically designed to be used without a ground plane. This means that composite aircraft and fabric covered aircraft can now have their antennas mounted totally within the structure. These antennas are designed using the latest engineering technology. Laboratory measurements show them to have better electrical characteristics than currently available products. The unanimous reports from pilots who have been using them confirm that they out perform everything now available on the market. One antenna model works for communication, navigation, and for ELT (Three antennas in the aircraft, but all the same design), and this design is tolerant to installation errors. They will work in metal airframes when a plastic or fiberglass wing tip or similar plastic component is available to provide the mounting structure.
Model Differences: The VHF antennas, 5T and 5I, differ only in the location of the BNC connection. The 5T is configured to allow the coax cable to be routed flat along the mounting surface of the airframe. This antenna model would be appropriate for a composite aircraft where the antenna would be mounted in the fuselage or fin and the coax would be close to the skin and be attached periodically for strain relief. In either case, the antenna can be used as a retrofit on in service aircraft or in new installations. The 5I series has the BNC connection positioned so that the coax cable would route out and away from the antenna mounting surface. This configuration is offered for antenna installations such as wing tips of fabric aircraft. If the antenna is mounted on the inside of the tip, the coax route is directly inward toward the wing root and the BNC connection is located near the spar to provide support for the cable. Both antennas are identical in their electrical performance.
I did not want antennas on the outside of my WWI airplane so chose to put this on the inside. I haven’t completed the plane or installed the radios yet, but it looks like this is going to work very well.
Newly acquired gyroplane had extremely high radio SWR (15+), poor cable run and tiny ground plane. I had just heard about independent ground antennas and Aircraft Spruce had the best price. The antenna has very good documentation, the 2 wings are flexible composite, very easy to conform to the nosecone curve of the fiberglass tub. I used 4 pieces of 3M VHB double sided tape to mount, one under the center box (balun), and the others as needed. Very secure. The SWR is now ~1.1 at 123.000 and a max of 1.6 at 136.975. Great purchase.
Fit perfect in my aircraft and fixed the antenna mounting issue I had for my ELT.
Installed inside the aft fuselage of a Glasair 1TD. I previously had a standard Comm antenna with faux ground plane - lots of dead spots poor transciever performance. The VHF-5T solved ALL of those problems. Great reception, my transmissions are very clear and able to receive from any angle. GREAT antenna!
I installed the 5T comm antenna and the L2 transponder antenna inside the tail and fuselage during construction of my fiberglass Jabiru J230. My radio and Mode C transponder both work perfectly. Also, there are no ground planes to install and the antennas are hidden inside.
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.
The best route is to look at the FAQ tab on this page as the manufacture has answered a lot of these questions. This antenna is a non TSO'd. It is critical that it is mounted on a non metal surface.
The Advanced antenna series are BNC female out. You will need a male BNC connector for this antenna.
Yes, this antenna will work through wood & fabric and composite aircraft like carbon fiber.
Per the manufacture, this antenna is designed for wood & fabric and composite aircraft like carbon fiber. Please refer to the FAQ tab on our page for more info on mounting.
The Advanced Aircraft Electronics High gain antenna was designed to be used with the 121.5 ELT frequency only.
Yes, the Advanced Aircraft Electronics High Gain Antenna will work through in a tube & fabric plane.
As of 3/2015, no there is not currently a TSO'd version of this antenna.
The Advanced Aircraft VHF-5 antenna has a vswr of 1.6 nominal and 1.9 maximum.
It should be installed vertically in the fuselage. Please consult the FAQ tab for more information.
Per the Manufacturer the gain is 2db.