The crystal radio was the most widely used of these.

Crystal radios have come and gone many times in history.

Dial Tone built his own crystal radio set when he was ten.

He built his first crystal radio when he was 14 years old.

It's like an old time crystal radio - on some days he gives me more static than signal.

The following sections discuss the parts of a crystal radio in greater detail.

As they do, Pitts works to assemble a small crystal radio.

One of the first solid-state devices was a crystal radio.

This could be readily bought or made from surplus telephone parts for use with a crystal radio.

His first independent business enterprise, at the age of twelve or thirteen, was building crystal radio sets.

By the mid-1920s, he was a manufacturer of earphones for crystal radio receivers.

His main hobbies were model aeroplanes and crystal radio.

Margot was going to build a crystal radio set out of an oatmeal container, with help from her dad.

Sennheiser built a crystal radio when he was 11 years old after seeing an early radio.

Growing up, his first introduction to music and electronics was when he built his own crystal radio from a kit.

A crystal radio can be thought of as a radio receiver reduced to its essentials.

Rogers needs Joe Negri's help to get a crystal radio working.

We built a crystal radio set together.

When he was a boy he would play with crystal radio sets and homemade transmitters.

Crystal radio receivers are a very simple kind of batteryless radio receiver.

I found some crystals that resonate nicely and I built a crystal radio.

They affix Pitts' crystal radio antenna to the chapel cross.

After having built a crystal radio receiver at the age of ten, Bates further developed his lifelong love for radio.

His father bought him a crystal radio receiver which he assembled, took apart, reassembled and rebuilt several times.

A later version using a crystal diode is still used in crystal radio sets today.