DF-A0058 is a 3-band, 5-channel DF switch, suitable for band selection and omni amplification of the DF-A0038 DF antenna with built-in omni.
The switch is designed to be mounted internally within the weatherproof cavity in the antennas. It comprises five parallel channels, each with input power limiting, ESD protection, low noise amplifier and band switch. An omni channel amplifier module amplifies the omni channel, and injects the DC required to power the masthead amplifier inside the DF-A0038.
A “calibration band” can also be selected, providing a balanced 5-way split of an internally generated or externally supplied signal, for RF chain and receiver calibration. The switch accepts a wide input voltage range and is controlled via hardwired logic lines or an EIA- 485 (RS-485) interface. All switching is solid state for rapid commutation and unlimited switching cycles.