How It Works - Ten-Tec 1253 Assembly And Instruction Manual

How It Works:

An Introductory Circuit Description
A somewhat more technical explanation of your receiver is in the
Notes for Ham Club Leaders appendix. In the meantime, you can
follow the block diagram below, peek at the schematic diagram
which is the centerfold of this manual, the "glossary" of Helpful
Words and Abbreviations (pp. 13-14), and the following circuit
explanation.
T-KIT Model No. 1253 Regenerative Receiver
Block Diagram
(A block diagram illustrates how major circuit sections are connected together
without showing all individual components as does the "schematic" diagram.)
To say it simply, a "detector" converts radio energy from an
antenna into audio energy, i.e., a sound which you can hear. A
detector can be as simple as a crystal diode, which is the heart
of the simple "crystal radio." If you've ever heard unwanted
radio signals on a stereo, telephone, PA system or intercom, you
can assume that some part of those devices has acted as a
detector to convert a nearby CB, taxi or broadcast signal into
intelligible sound. (This process of detection is also referred
to as demodulation.)
In the following explanation, the words regeneration, feedback
and oscillation all mean approximately the same thing.
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