The Vectronics AT-100 active antenna tunes from 300 kHz to 30 MHz, which covers AM broadcast, all shortwave, and all amateur radio bands

The signals from the whip are electronically boosted by as much as 10dB! Tuned input provides selectivity (controllable from the front panel), therefore reducing interference and noise, and increasing the signal you DO want to hear. Use it by itself or with your outside antenna!