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This site is dedicated to the creation and understanding of radio receivers. If you've dreamed of hearing a radio station with a receiver you built yourself, this site is for you. Most of the devices are designed for amateur radio operators. They are primarily modern regenerative receivers that use only semiconductors, except for 'retro' setups. The described receivers will allow you to receive amplitude modulation, single-sideband (SSB), and Morse code (CW).

Alongside these receivers, several articles cover various topics: LC oscillators,  the operation of low-voltage vacuum tubes, and more.

The joy of receiving signals on equipment you've built yourself is profound. May this site help you discover that joy. Don’t hesitate to join the amateur radio community.


F5LVG        Olivier ERNST

Mail : oernst***@gmail.com
*** 599


 New publications

A 3.5 to 24 MHz Regenerative Receiver for Amateur Bands 2024

Simple superheterodyne receiver (3.5 - 30 MHz) transistors ICs 2024 ENGLISH

Stability of LC oscillators 2023 ENGLISH


Regenerative receiver

Regenerative receiver theory

Very high performance regenerative receiver 2019 (transistors) 


Regenerative Receivers: Tubes or Transistors? The Choice is Yours! 2014 ENGLISH

  New high performance regenerative receiver 2013 ENGLISH


  Simple regenerative receiver 2011 ENGLISH



superheterodyne


Superheterodyne receiver - 15 17 20 40 80 m - BJT

Simple superheterodyne receiver (3.5 - 30 MHz) 2024 transistors ICs 


TUBES

4 tubes regenerative superhet ENGLISH

4 tubes low voltage regenerative receiver 2018 ENGLISH


Low voltage regenerative receiver

Rationale for the use of thermionic valves with low HT 


Rod tube regenerative receiver 2020

Modern, simple, high performance 4 tubes regenerative receiver 2022 



Oscillateurs

Frequency stability of LC Oscillators ENGLISH



Frequency modulation


Solid state FM receiver 2021 ENGLISH


Electronic tubes FM receiver 2020 ENGLISH




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Notice en français MFJ-949E

Clarisworks 5

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TL-WA750RE

Primer Stat



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