| 摘要 |
<p>The object of the invention is a tuneable active antenna in which the resonating circuit forming the signal reception means will be arranged not next to the receiving apparatus, but in a high, uncluttered area, preferably on the roof next to the antenna rod proper, this circuit being connected to the control console, located next to or in the radio receiver itself, via a coaxial or other multiwire cable, in such a way that a greater or lesser number of inductance windings can be incorporated from a switch on the control console and preferably by means of relays, thus varying the inductance of the resonating circuit for selecting the frequency band from 100 to 30,000 Kilocycles plus the F.M. band from 88 to 108 Megacycles. <IMAGE></p> |
