Mini-Kits manufacture a range of fully constructed low noise Receive Pre-amplifiers for Amateur Radio applications which are suitable for improving the reception of weak signals. Our RX/TX masthead amplifiers are suitable for use directly on most Transceivers, and have on board Relays and a RF VOX to detect RF from the Transmitter to bypass the Pre-amplifier.  Most have an on board bias tee so that DC power can be fed up the coaxial cable to power the circuitry directly from Icom multimode VHF/UHF Transceivers including the IC275/475/1275, IC910, IC9100, and IC9700. 

DIY Kit Products for many of these can be found here