Active MW Antenna (CB25721E)

This excellent gain short and medium wave antenna was found in the June 1994 issue of Electronics Now magazine. The circuit uses 3 FETs

Crystal Oscillator (CB1589E )
This circuit uses a voltage comparator and can produce signals up to 20 MHz. The resistors R are...
LM290xAQ Operational Amplifiers (COM011E)
It can be obtained from Mouser Electronics the new LM290xAQ operational amplifiers from Diodes...
Microphone Preamp (CB6036E)
This circuit was obtained from a Texas Instruments 1985 document. The circuit is powered by 1.5 V...