This FM receiver tuning step circuit was found in a 1960 documentation. No information about the coils is given, but the FI used at the time was 10.8 MHz.
In the figure we have another application for the LT3518 integrated circuit from Linear Technology...
This is a configuration much explored by assemblers, being found on this site in dozens of similar...
This circuit is interspersed between the external antenna and the short-wave receiver, providing much...