BS-4 RX Antenna Switch with Preamp & High Pass Filter

The BS-4 RX antenna switch from Low Band System with preamp and high pass filter designed to be used with up to four single direction RX antennas like Beverages, Pennants, Flags, etc.

Delivery time on this item is 3-4 weeks.



The BS-4 RX antenna switch from Low Band System use 75 or 50 ohms designs with high quality F or UHF connectors for the input and output connections.

The receive preamplifier is designed for low noise, providing superior dynamic range and third-order intercept performance.

The BS-4 RAX Antenna Switch has a built-in relay that automatically bypass the filter and preamplifier circuits when DC power is removed or TX_Gnd signal is applied to the control console.

LBS BS-4 RX Antenna Switch characteristics:

  • 4 inputs (SO239 or F connectors)
  • inserted SWR ≤ 1:1.1
  • unused ports loaded to 50 or 75 ohms, 2W resistor
  • -60db. minimum isolation to unused port
  • 7 pole Chebyshev high pass filter with cutoff at 1.7 Mhz, input SWR ≤ 1.3:1
  • RX preamplifier 12db of Gain
  • Antenna inputs and preamplifier switched OFF during transmit using TX ground signal