This circuit for the 60 kHz range was found in 73 magazine and published in 1995. The circuit uses a ferrite rod. Note the direction of the coil windings.
The presented circuit uses two old germanium transistors. We found this configuration in a...
This circuit is primarily intended for the calibration of common radio IF steps using the...
This 3-channel transmitter for amateur analog TV from 902 to 908 MHz was found in a QST magazine...