- Published in issue 2/1992 on page 24
RC high-pass filter for active antennas
Powerful transmitters operating on medium and long waves may cause considerable interference in the reception of short-wave signals. A high-pass filter to suppress the interfering signals is, of course, the solution. Since, however, the active antennas to which such a filter must be added are normally out in the open, it is desirable to be able to control the filter remotely.