DS4R RX Antenna Switch with Preamp & High Pass Filter

The DS4R (previously called 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 DS4R 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 DS4R 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
• Optional BPF for 160, 80 or 40 meter instead of HPF. (Please contact us before placing order)
• RX preamplifier 12dB gain, can be delivered with up to 20 dB gain. (Please contact us before placing order)
• NF  ≤ 3.5db
• OIP ≥ 25db
• Antenna inputs and preamplifier switched OFF during transmit using TX ground signal