Matching antenna (CB7458E)

The coil and sockets of this circuit found in a QST depend on the frequency band that is intended to be tuned.

FM transmitter for 800 m Range (CB20409E)
In fact, the original American publication exaggerated a little about the range that a good...
Car Battery Checker (CB9529E)
We found this circuit in an American documentation from the 90s. Through an LED it indicates the...
ICS 52000 Low Noise Microphone with Digital TDM Output
August 2017 - Mouser Electronics is announcing the availability of TDK ICS-52000 microphones with...