The WBR – A Simple High Performance Regen Receiver for 40M by N1BYT. Photo by AA7EE A few weeks ago when a sizable order of parts arrived from Dan’s Small Parts And Kits, the plan was to use them (along with the parts from a few smaller orders from kitsandparts.com and Mouser) as the basis…
DetailsMy kids are learning Morse code this summer, so I threw together this little circuit to help them learn. And to make it more fun… It uses an ATtiny85 ($2.26 at digikey.com) to drive a piezo beeper (? $3.50 at Radio Shack.) The ATtiny85 takes 5.5V max, so I built the circuit on a piece…
DetailsWith a simple, clean design this Elekit TU-879S single-ended, class-A vacuum tube amplifier kit echoes past greats like the Japanese made Audio Note Ongaku. Supplied with EH 6L6 tubes, this versatile amplifier is able to handle just about any octal based power tube on the current production market. We have tried it with JJ KT77,…
DetailsModel 8LS Stereo Integrated Tube Amplifier Stereo Integrated Tube Amplifier Kit that is easy to build, sounds great, and is just fun! The Stereo Integrated Tube Amplifier utilizes 5670 triode and 6005 pentode tubes. The amplifier has built in volume control so that it can be driven directly from a CD player, tuner,…
DetailsNow you can build your own valve radio with a combination of old and new technology. The valve provides strong reception and the typical sound of valve radios, while a modern audio IC and a high-quality loudspeaker provide an optimal sound level. In addition to the characteristic sound, the warm glow of the valve heaters…
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