Radio Theory and design

In the previous filter post I simply let ELSIE "build" the filter. This time I set the "L" value and then ran the calcul...

A couple of band pass filter designed by ELSIE. I ask ELSIE," what about those odd coil values?". She answered."Air co...

The chief designer's 11 year designer in training built her first radio. She selected the design and corrected a design flaw. She made...

This is my best DBM radio to date. The clip lead center top is the antenna. To project box on the left houses the Lambda Diode Oscillator...

The circuit that was offered. I like to use connect the dots to do the hook up so First thing I did was number the terminals. (it also he...

This is not the DBM but it may be representative. The raw output, unfiltered. The filtered AF signal. The raw DBM output. Could a...

TI on xtal osc THE OSCILLATOR BOOK