The MFJ-1022 0.3 - 200 MHz SWL Active Antenna. Your ham band only antenna does great in the ham bands... but plug this MFJ all band active antenna into your radio and hear strong clear signals from all over the world from 300 kHz to 200 MHz -- including low, medium shortwave and VHF bands.You'll enjoy up-to-the-minute international shortwave newscast, ship-to-shore, airline, commercial RTTY and others.It also improves weak noisy scanner radio reception from high to low ban VHF -- hear signals you couldn't hear before. A J-310 FET handles strong signals and noiseless feedback circuit gives you excellent low noise reception. 4.5GHZ MRF-901 transistor lets you receive really weak signals well into VHF. Take it anywhere 0 it's so tiny it fits in your pocket, Has on/off switch, power on LED, SO-239 Coax connector and detachable 20 inch telescoping antenna. Uses 9 Volt battery or 110 VAC with MFJ-1312D.