AM radio receiver with switchable IF bandwidth

Year	Description
1991	Invention patented by Peter Braegas on January 17th, 1991. Abstract: A method for IF bandwidth switchover and an IF bandwidth switchover apparatus in an AM radio receiver are described. This kind of switchover is appropriate if radio transmitters not only transmit at the normal modulation bandwidth but also broadcast programs with an expanded bandwidth. To obtain optimal reception, the switchover is performed as a function of the reception conditions. To this end, the error rate of supplemental AM information, adjacent-channel interference and the signal strength can be evaluated. These criteria can be used either individually or in various combinations.
Source: selected by the editor from original sources.

Invention: AM radio receiver with switchable IF bandwidth