AD1800 Passive Directional Antenna for 1.8GHz Systems Only Battery Powered LED Wash Panels Optimum Air Cavity Behind Speaker:

Optimum Air Cavity Behind Speaker: 20 to 40 liters (0

Low-Noise Active Circuit

Radial Eclipse transformers for hum isolation

hanging or pole-mounted

AD1800 Passive Directional Antenna for 1.8GHz Systems Only Battery Powered LED Wash Panels Optimum Air Cavity Behind Speaker:Passive directional antenna for 1800 MHz range Product Features Sennheiser AD1800 Passive Directional Antenna Antenna for 1. 8GHz Systems Only Gain: approx. 4 dB Connection: BNC socket, 50 Dimensions: 180 x 1920 x 22 mm Weight approx.: 116 g Product Specifications Frequency range: 1,4002,400 MHz Apex angle ( 3 dB): approx. 100 Front to back ratio: > 14 dB Gain: approx. 4 dB Connection: BNC socket, 50 Dimensions: 180 x 1920 x 22 mm Weight approx.: 116