This longwave signal booster circuit was found in the 1995 Encyclopedia of Electronic Circuits Volume 5. Note the dimensions of the board. The transistor is a general-purpose transistor.
The selected circuit was obtained in a Texas Instruments opto-electronics manual. The transistors can be...
This circuit is suggested by Texas Instruments' Linear Circuits Applications. It consists of an...
This is a typical quartz crystal oscillator for the 3.5 MHz frequency (80-meter range) used in...