Jan 20, 2011 · An evening project: W7IUV low-band receive preamplifier.. Total cost: < $10. Total time: 1 hour. It worked pretty well on 80 and 160 with the crossed K9AYs. The 48-volt relays in the box at the antennas are sticking (thanks to using a 40-volt PSU). YO5OFH, Csaba's HAM RADIO home page - 2 m GaAs FET preamplifier. 2 Meter GaAs FET Preamp . NOTE: The NE25339 (3SK206) device is a close match but in the

DX Engineering RPA-1 Receive Preamplifiers offer superior receiving results on today's crowded medium and shortwave bands as well as on the ham bands. SWLs and Radio Amateurs around the world have come to rely on the advanced operational performance of DX Engineering RPA-1 Receive Preamplifiers. The closer we can get the preamp to the antenna, the more it will help our system. Since it is not possible to place the preamp inline with the duplexed transmit/receive signal, we have two paths to choose from. The first, and most common is to add the preamp in the receive path, between the duplexer and the receiver itself.