The AV-587 antenna coupler is an antenna signal splitter/diplexer providing three outputs from a single antenna. One output provides a combined VOR/LOC/GS signal. A second output provides a combined VOR/LOC signal. And a third output provides a GS signal.
The necessity of bringing this product forward comes from advancing technology in avionics. Newer designed navigational radios have only one antenna input to receive all three (VOR/LOC/GS) signals whereas older legacy radios had a separate antenna input for the VOR/LOC signal and another antenna input for the GS signal.
In an aircraft instrument panel with one newer navigational radio and a second older legacy navigational radio, the AV-587 is the article that will provide the necessary signals to both radios utilizing a single antenna.
SPECIFICATIONS
| Model | AV-587 |
| Application | Navigation Receive |
| Frequency | Port 1: Antenna Port 2: NAV/LOC/GS Port 3: NAV/LOC Port 4: G/S |
| Impedance | 50 Ohms Nominal |
| VSWR | 1.40:1 Max. |
| Insertion Loss | less than .6 dB above 3.0 dB |
| Isolation | greater than 22 dB |
| Connectors | “BNC” Female |
| RF Power Capacity | Receive Only |
| Color | Black |
| Max Weight | 0.38 lbs. |
| FAA TSO | C34e, C36e, C40c |
