Sennheiser AD 3700 Active Directional Antenna

The AD 3700 is the directional half of Sennheiser's 3700 pair. Pointing a pattern at the performance area does two useful things at once: it lifts the wanted signal, and it turns its back on the DTV transmitter, LED wall or dimmer rack sitting behind the antenna position. On a crowded RF site that rejection is often worth more than the gain.

An AB 3700 booster is built into the housing and powered over the coax, so the antenna is compatible only with Sennheiser receivers that supply booster voltage: EM 3731, EM 3732, EM 2000, EM 2050 and EM 6000. The panel is 250 x 165 x 23 mm and 390 g, light enough for a stand adapter or a direct wall mount without heavy hardware.