It is amazing to witness the evolution and progress of the electronics industry for the last 50 years. While present day products are smart and feature-rich, to me the “old and clumsy” products are golden memories. If you also are a long time radio hobbyist, you will find this blog interesting. I will describe the circuits of the radios that I have built, from simple crystal radio to complex wide-band scanners. I will also include study notes of popular commercial products.
My first radio experiment
My first radio project was a crystal radio which was similar to the above picture. As a poor student, the selling price of the kit was too much for me. Fortunately I found a article on building crystal radios from an electronics magazine. I copied the circuit, bought low cost components from the surplus market,…
Hello Electronics/Radio Hobbyists!
If you are a hobbyist and interested to know the evolution of radio/electronics for the past 50 years, you are in the right place. Don’t worry, I will not bore you with well-known history, which has been detailed in many good books. Instead I will give detailed circuit description to the radio receivers/transceivers I have…
From Hobby to Professional 