ALP 650, Active directional antenna. ALP650 is a directional antenna type "shark fin" (LPDA) with good directivity (+7dBi) and is available in three different frequency ranges. The ALP650 is made of 3 mm fiberglass in skeleton construction for minimum wind impact and is ideal for portable use. Built-in antenna amplifier with 5, 8 or 12 dB gain to compensate for losses in long antenna cables. Phantom fed via e.g. BIAS-T or the Venue receiver. Bracket with 3/8" tripod thread, connection via protected BNC connector.