Birmingham Alabama Crystal Radio Group
Birmingham Alabama Crystal Radio Group

KE4ID On The Web

Hello everybody. My name is Jack Bryant. I am an active, licensed ham radio operator, KE4ID. My radio interests include building receivers, transmitters, antennas, test equipment, and software defined radios (SDRs). I have reworked a number of old receivers and transmitters (see NC-81X article in October 2011 CQ magazine).

I also enjoy discussions with local and distant radio friends on the air, usually on 40m and 80m and Skype.

A number of hams have influenced my desire to deign and build, including Bill Hoisington, Doug Demaw, Wes Hayward, Ulrich Rhode, Dave Schmarder, Bill Orr, and Roy Lewellen.

Crystal set building is a favorite past time too. Several years ago I took over running the Elmer Crystal Radio Contest, started by Owen Pool (sk).

This website is dedicated to the art of radio building, dxing and competition. I hope this encourages some of you interested in building electronic projects to make a crystal set, and see how far away you can hear. So enjoy!

73, Jack, KE4ID

New Section! – Projects & Radio Mods

Here is my newest section on this ever expanding website! My ham radio hobby includes improving the performance of my equipment. I'm starting this new section off with a modification to my Yaesu FT-990 transceiver to reduce the receiver hiss.

Take a look at my radio projects and mods section.

The Radios of B-Ham

The homemade radios of the Birmingham, Alabama Crystal Radio Group

This website is all about homemade radios (crystal sets, tube or solid state). This is the home of the annual Elmer receiving contest (currently in suspended). But the radios that the Birmingham group built are still proudly displayed on this website. Please stay a while and navigate though this newly rebuilt website. You won't be disappointed!

Homemade Crystal Radios

Homemade crystal radio

The main focus of this website is the crystal radio or crystal set. These are radios that require no local power. The power to operate the radio is obtained from the station that the radio is tuned to. Neat, eh?

Crystal sets were used in the pre-broadcast era and were widely used until the mid 1920's before being replaced by vacuum tube receivers. But the crystal set was not forgotten. During World War II the crystal detector radios resurfaced as the famous "foxhole radio". During the fifties many kids got a crystal set kit for Christmas.

Now that these kids are grown, they want to show their kids and grandkids how they spent their time as a pre-internet kid. So take a stroll down memory lane by visiting the crystal radio projects at

1AD Radios

1AD Radio at

1AD is shorthand for One Active Device. It is easy to dx now with the high quality commercial receivers out there. But how about dx on a minimal radio? This is the idea behind the 1AD radio. How many stations can be heard using only one tube and your skills?

The one active device is built using a single vacuum tube or semiconductor transistor or field effect transistor. No integrated circuits not allowed.