Automatic interference canceling apparatus

An automatic interference canceling device comprising:

• a. a RF signal receiver means for receiving RF energy signals;
• b. a programmable notch filter means operatively connected to the RF signal receiver for attenuating a preselected number of interferers in the RF signal band;
• c. a tuneable receiver and amplitude measuring means for scanning the band and determining the presence of interferers and their amplitudes;
• d. an automatic gain control means connected to the tuneable receiver and amplitude measuring means for determining the amplitude of the interferer over a very wide dynamic range;
• e. a multiple switch selectively interconnecting the RF signal receiver means, programmable filter means and tuneable receiver and amplitude measuring means;
• and
• f. a controller connected to the tuneable receiver and amplitude measuring device, multiple switch and programmable filter means for controlling their operation by selectively activating the switch to connect the tuneable receiver and amplitude measuring device to the RF signal receiver for scanning the band of operation by stepping through a preselected number of frequency increments of the band for determining any interferer present including its amplitude and outputting the information through the automatic gain control means to the controller for storage and determination of a preselected number of worst interferers;
• and switching in the programmable filter means for filtering these interferers from the RF signals utilizing the gain control level as an indication of relative amplitudes to control the tuning process.