Deity SF1 Shark Fin AntennaThe SF1 Active Directional (sharkfin) Antenna is a broadband UHF receive antenna designed to improve range and reliability for professional wireless systems. It covers 470–960 MHz with a directional 60° optimal pickup angle and linear polarisation to focus reception where you need it. An integrated amplifier provides –9 dB to +21 dB gain in 1 dB steps (with overload indication) while unpowered operation delivers typical 6 dBi passive gain for flexible deployment. The enclosure is IP54-rated for splash and dust resistance, suitable for location film and theatrical use. Connection and power are straightforward via a 50 Ω BNC feed; when your receiver or antenna distributor supplies 12–16.8 V DC bias, the SF1 runs in active mode (approx. 12 V/90 mA). A clear gain display with +/– buttons simplifies on-site adjustment and a mounting base with 3/8"- to-5/8" threads enables use of most mic or lighting stands. Key RF performance figures include OIP3 39 dBm and max RF input 30 mW, helping maintain signal integrity in complex RF environments. For best results, aim the antenna toward the coverage area, maintain line-of-sight, keep it ≥1 m from other antennas and avoid nearby metal. Use the active gain only to compensate for coaxial cable loss. As a rough guide, RG58 cable loses about 6dB over 15m at 500MHz. The red indicator will alert you to excessive level. Physical details: 376.5 × 328.8 mm, 532 g, operating range –10 °C to +55 °C. Ideal for multi-receiver carts and distributed systems on corporate/commercial sets where clean, coordinated RF is critical.
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