The regenerative radio receiver
is a shortwave radio
design used in the early 20th century
. The basic principle
is that the incoming radio signal
, when demodulated
, is used to provide energy
to the incoming signal, creating, in effect, a positive feedback loop
. Careful control
on the part of the operator
is necessary, as the radio must be kept on the verge
for best results.
detector obtains one of the highest single-stage gain
s of any detector
, at the expense of the necessary operator control. Automatic regeneration control would make the radio complex enough so that a superheterodyne receiver
would be simpler to design and build.