Sennheiser A 1031-U
The Sennheiser A1031 Omnidirectional UHF Antenna for Evolution Series.
The Sennheiser A1031 is a passive omni-directional antenna. Transmitting and receiving antenna for frequencies between 450 and 960 MHz. The Sennheiser A 1031-U is an essential accessory for Evolution G2 series rack-mount receivers or RF distribution amplifiers.