Audio-Technica Wireless Microphone System (ATWA49) The Audio-Technica atw-a49 UHF lpda Antennas (440 - 900MHz range, pair) are designed for use with Audio-Technica UHF wireless Systems, operating over 440 - 900MHz range. The Wide-band Antennas provide enhanced signal Pick up while extending operating range and reliability. The directional coverage pattern features a beam-width of 90 Degrees and is often useful in theatrical and musical performances as well as presentation. Pair of UHF Wide-band directional lpda (Log Periodic dipole array) Antennas provide enhanced signal pickup for UHF wireless Systems throughout a wide band range (440-900 MHz). each antenna Paddle is matched to 50 Ohms Impedance with an integral high-quality Low-Loss BNC connector; 6 dB gain. For permanent or temporary installation; mounts to 5/8"-27 threads. Atw-a49 is an antenna upgrade from stock antennae which are provided in wireless Systems for better reception of audio especially over long ranges. Specifications: package quantity: 2 band range: 440-900mhz threads: 5/8"-27 connector: bnc Impedance: 50 ohms spectrum: UHF