Here is a great AMECO Preamp for your older HF receivers, especially above 14 MHz where these external booster will make them really perform. It's like having a sensitive front end added to your radio. Built in 120V AC supply. Will sell for $45.00 plus shipping. Pictures are below. 73 de AF4K - Bry af4k at hotmail.com http://af4k.com/radios.htm