27 MHz Oscillator (CB24983E)

This tunnel diode oscillator was found in July 1986, Radio Electronics magazine. Note the low supply voltage.

VCO 4046 (CB15464E)
The CMOS 4046 integrated circuit is seldom used, both due to the difficulty of finding it and the...
Logarithmic Wattmeter (CB13664E)
This circuit was obtained in a documentation for radio amateurs in 1974. The coil consists of 12...
Mixer with Gain from -1 to +1 (CB12057
E) The interesting thing about this circuit found in a 1985 English magazine is that it controls the...