There's something oddly anachronistic about making a regen set based on transistors and ICs, when this is a design whose main advantage is requiring a very small number (usually one) of active components. Here's a tube-based example:<p><a href="https://w5dxs.tripod.com/receiver.htm" rel="nofollow">https://w5dxs.tripod.com/receiver.htm</a>