Deity SF1 Directional Shark Fin Antenna

The Deity SF1 is a directional shark fin antenna for wireless microphone systems, covering 470 to 960 MHz with adjustable active gain to make up for cable loss.

The SF1 runs in active mode when a receiver or antenna distributor supplies 12 to 16.8 V DC bias over its 50 ohm BNC connector. Its gain then ranges from -9 to +21 dB in 1 dB steps. A display and +/- buttons set the gain, and a red indicator warns of too much signal at the receiver input. Without power it works as a passive antenna with about 6 dBi of gain. It works with Deity’s THEOS system and with other brands.

The SF1 picks up across 60 degrees to either side of center, with linear polarization. Its electronics sit in a metal housing inside a vented, IP54-rated enclosure for work outdoors. The base takes 3/8 in and 5/8 in threads, with a female ARRI 3/8-16 accessory mount and an anti-rotation design.

For the best reception, face the SF1 toward the area to cover with a clear line of sight, more than 1 m from other antennas and away from nearby metal. Set the active gain to match the loss of the cable run, so the receiver is not overloaded.

Features

• Directional antenna for 470 to 960 MHz
• Active gain from -9 to +21 dB in 1 dB steps
• About 6 dBi passive gain without power
• Gain display with overload indicator
• Metal housing for the electronics
• Vented, IP54-rated enclosure
• 50 ohm BNC connector
• Female ARRI 3/8-16 accessory mount with anti-rotation design