Mike's AM Loose Coupler Radio

Hope you people like this Classic project. The Loose Coupler was used by the Navy, in the early days of radio as it was so selective and sensitive at the same time. A two-circuit tuner, as the loose coupler, is one of the only ways selectivity can be accomplished without sacrificing sensitivity. Continue reading …

Mike Peebles DX Crystal Set On The Cheap (but good)

The main objectives of this project are, to make a Double-Tuner Crystal Radio Set with: 1) Careful and well thought-out construction practices; 2) As low-cost as possible; 3) Using most-available parts and materials, and 4) Keeping design as low-loss as possible, as well as High Performance, with all the aforementioned. Continue reading …

One Tube Regen Receiver Uses A Military Tube

Haven't built a set for a while, and decided I should. Had this special coil that I bought off eBay, and decided it needed to be in a nice looking set.

Decided to build a simple one-tuber, with a VT-67 tube. I have a whole box full of these tubes, and they are really a #30-Special. This tube has a filament of 2V. at 120mA. The #30 has a filament of 2V. at 60mA. I use 1-1/2V, and it's just right, with a B+ of 45V. Continue reading …

Son Of Junkbox Radio, By Dan Petersen

Back in May, 2000 appeared in the hallowed pages of the Newsletter my first article, “It Came From the Junkbox”. This was a set in which I picked up DX for the first time – a true thrill indeed. Before that time I always thought that anyone who claimed to have heard DX on a crystal set had been hit by lightning once too often while stringing antennas. Now I am a believer as I have heard an amazing amount of stuff with the different sets I have built. For a while I have wanted to build a DX set that incorporates several of the tricks I have learned in my tinkerings. In this light, I designed a circuit that uses the best of the “Mystery” set, The “Like-A-Flash, Senior” and a new idea (for me at least), the use of a large air-wound tuning coil. Another feature I would find handy is some way to spread out the upper portion of the Broadcast Band. Last but not least I wanted to have a switchable detector where I could jump between a diode and a detector stand.  Continue reading …

Crystal Loudspeaker

This project was researched and designed by "PeebCon" (Peebles originals & Friends), and we have spent much time experimenting with, and building this speaker system. Many trials and errors were experienced before we had the perfect system. If you follow these building instructions, "exactly" as we have outlined here, you to can have an outstanding crystal radio loud speaker. I guarantee you will be very surprised as to how well it operates. Continue reading …