Patent ID: 6236265
Filing Date: 2001-05-22
Classification: H04B

Abstract:
A circuit for preamplifying signals received by a radio station, comprising:a) at least one antenna for receiving radio signals;b) a first preamplifier coupled between the antenna circuit and the radio station and positioned outside of the radio station, the first preamplifier coupled to the antenna via an antenna feed line, the first preamplifier coupled to the radio station via a trunk line;c) a switch coupled to the trunk line, the switch having a control signal input;d) a second preamplifier positioned within the radio station and coupled to the switch;e) a bridge line coupled to the switch and across the second preamplifier to effect a bypass of the second preamplifier;f) a control signal generator coupled to the switch the control signal generator being effective to generate a control signal to cause the switch to switch radio signals through the bridge line or the second preamplifier; andg) a bridging switch operatively configured and coupled to effect a selective bypass of the first preamplifier.