MFJ invented the tunable active antenna! New technology uses a cascode FET/bipolar transistor and a gigahertz bandwidth buffer.Numerous copies have been made without success -- including most recent ones. Why? Because MFJ has made continuous improvements where other...
MFJ's unique tuned circuitryminimizes intermod, improves selectivity and reduces noise outside the tuned band. You can also use it as a tuned preselector with an external antenna. The MFJ-1020C covers 0.3 to 40 MHz including VLF, AM broadcast, all shortwave and all amateur radio bands. It...