I'm pretty happy with this, and as Carl F. The aircraft interprets the signal and displays them on the cockpit. The antenna sends a VHF carrier signal with 90-Hz and 150-Hz sideband signals that the aircraft instruments determine as left and right of the centerline. I also flew an ILS approach fully coupled with the aircraft displaced to the right of the centerline by about 12 feet (The antenna in left wing tip, so this makes sense.) The Localizer generates and radiates signals to provide final approach azimuth navigation information to landing aircraft. I test flew with the new setup and was able to receive VOR stations up to 100NM at 6500FT. Testing the whole affair with an MFJ-259D yielded an SWR of 1.2:1 at 112.75MHz, a Gamma Match efficiency of 99%, and impedance of 45 Ohms. The 'base' leg is attached to the wing tip rib with 2 #8-32 screws, and the aft tip of the 'leg' has a little gaffers (gorilla) tape on it to prevent chafing inside the wingtip. 063' LEXAN sheet for the insulator under the gamma match and lengthen the gamma match element to 3.75'Ĥ. Extended the 'arm' from 11.7' to almost 16',ģ.

clued me into a design (very similar to Sportcraft SA-001) in the AeroElectric Book - attached for reference.ġ. Another type of ADF and a good view of VOR and one COMM. Beechcraft often have a boomerang antenna for Com/ Nav/ Loc/ GS antenna. In this one you can see the ELT antenna just behind the cover. I decided to rip out/re-do the installation. Here’s another aircraft with a common arrangement. In my installation, I didn't follow the directions exactly I sort of threw the antenna into the left wing tip of my RV-7 and layed a couple of strips of fiberglass on it to hold it in place.ĭuring a typical flight (6500-8500ft), I could receive VOR's that were within 30NM. A recent thread here got me thinking about the performance of my previously installed Sportcraft Antenna.

Localizer antenna location on aircraft