Active wideband UHF receiver antenna

The BETSO SHARKIE is a compact active UHF receiver antenna with LPDA structure and cardioid directivity. Its variable ultra-low-noise amplifier lets you compensate for coaxial cable loss in the field, or reduce gain when the signal path is short and strong.

The antenna is powered through the coaxial cable from a 5-20 V DC source and includes high-efficiency input filtering to reduce unwanted RF outside the wireless microphone band.

Key features
- Active wideband UHF antenna
- LPDA structure with cardioid directivity
- Adjustable amplifier gain from -9 to +18 dB
- Ultra-low-noise amplifier below 0.75 dB
- High input filtering against unwanted RF
- Bright LED gain display with auto/manual brightness
- 1/4 and 3/8 inch mounting threads

Specifications
Frequency range | 470-850 MHz
Antenna gain | 8 dB average, 9 dB peak
Directivity | Cardioid
Polarisation | Linear
Amplifier gain | -9 to +18 dB
Amplifier noise figure | < 0.75 dB
Powering | 5-20 V DC through coaxial cable
Current consumption | 35 mA
Dimensions | 275 x 350 x 21 mm
Weight | Approx. 320 g