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Welcome to the Facebook Crystal Set Radio Group!

Dave Schmarder

Hello friend. My name is Dave Schmarder. I am the owner and operator of My homemade hobby radio website has been on the net since 2002. Yes, this is the home of that crazy guy of German heritage that builds all those radios.

This website is about the homemade radio projects that I have built. I show all the circuits and offer good quality pictures. Each project has a description added. I did all this so you, the radio builder hobbyist would have some good plans.

Starting in early 2010, was transformed into an ad supported website. The income helps offset the hosting costs as well as a little for me. Please whitelist me in your adblocker. Thanks! (BTW, The Ublock Origin extension is an excellent blocker and does allow individual website whitelisting.)

Or please donate $5 via PayPal, if you like my website or found something useful here. Thanks.
I also host The RadioBoard, CrystalRadio.US and
(After I send a thank you note, I then will delete your e-mail address, for your privacy.)

Do you have, or are you interested in the Google Home speakers? Check out my recent website about this great device.

Crystal Radios

Crystal Radio

Remember that crystal set you made with your dad or grandpa? I remember my experiences to this day. In early 2002 the crystal set bit me again. This time I really got excited and started building one set right after another. I was going to stop when I built a couple of radios that would display well. But there was no way I was going to quit. So here I am at 78 radios and counting! I hope you find one that you would like to build. See what I have made to show you.

Tube Radios

Tube Radio

Soon after I started building crystal sets, the lousy summer band conditions convinced me that I should expand my activities in to active devices. Encouraged by my web visitors, I built a bunch of tube radios to experiment with. I didn't build regenerative radios when I was a kid, so this was new territory for me. I am pleased with the outcome and I hope you are too. So, I proudly present my tube radio main page.

Solid State Radios

Solid State Radio

Transistors? Bah humbug. But I've heard that they have become popular and more and more people have switched from tubes to transistors. So far there is only one radio, but I hope to add more. So please accept my meager attempt for now

Audio Amplifier

Tube Audio Amplifier

I love tube amplifiers. But as my solid state section, my amplifier section has only one example to show you. It is a nice small, low powered audio amp. Several others have built this design and are quite happy. So check out my amplifier section and encourage me to make more!

Loop Antennas

Loop Antennas

Loop antennas have been in my family since I was a little guy. I still have the big red loop that my dad built and that started my interest in these magical devices. I built some smaller loop antennas to connect to my old time radios to improve my reception. My loops are beautiful!

My Non-Radios Websites

I also have a website called which has a bunch of banner graphics that I made, plus a DIY home page template. I have a section that I call "EBayisms" that are funny things found on the popular auction website. To round out the site, I added some product reviews.

For a complete list of sites that I built, check out my Websites Portfolio Page.

The RadioBoard Forums

The RadioBoard forums.

As someone that is interested in the topic of homemade radios, I wish to extend an invite to join other like minded people at a forum that I operate, called The RadioBoard!

I also want to invite you to the other sections of The RadioBoard website including the RadioContest section. Here you will see some more very nice examples of well built homemade radios.

Also, new on the site is a section that I have named The Best of the Best. Over the more than 5 years of The RadioBoard Forums, there have been some real outstanding posts by our members. There are some popular technical threads that deserved a better spotlight. So I took those posts and boiled them down into some nice articles. As time allows, this section will become larger.

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