regenerative radio receivers

Posted on Feb 6, 2014

A regenerative radio receiver is unsurpassed in comparable simplicity, weak signal reception, inherent noise-limiting and agc action and, freedom from overloading and spurious responses. The regenerative radio receiver or, even super-regenerative radio receiver or, `regen` if you prefer, are basically oscillating detector receivers. They are simpl

regenerative radio receivers
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e detectors which may be used for cw or ssb when adjusted for oscillation or a-m phone when set just below point of oscillation. In contrast direct conversion receivers use a separate hetrodyne oscillator to produce a signal. In the comprehensive electronic project presented here, Charles Kitchin, N1TEV has provided us with a three stage receiver project which overcomes some of the limitations of this type of receiver, principally the provision of an rf amplifier ahead of the detector. The radio described here is a two band short wave receiver which is both very sensitive and very portable. It receives AM, single sideband (SSB), and CW (code) signals over a frequency range of approximately 3. 5 to 12MHz. This includes the 80, 40, and 30 meter Ham bands plus several international short wave bands. This receiver is ideal for code practice and for general short wave listening although a certain amount of practice (and patience) is needed while the user learns how to tune and adjust the controls. This should be considered a medium skill level project. It was designed to be built by the average Ham under the mentorship of experienced "elmers" who can provide guidance on soldering, coil winding, troubleshooting, and operating the receiver. It is also a good "family" project. In the BARS club class, several parents built radios with their kids. The BARS Ham Radio club was fortunate to have several experienced "Elmers" including...

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