Author: Grayson_Evans

Grayson was first licensed as WN4GVM in 1962 (yes, that old). He has spent much of his life in electronic product development, most of it with solid-state electronics. He got interested in restoring old thermatron amateur radio equipment in the early 1990’s and has been doing it ever since. His main interest is in thermatron receiver design. He is the author of two books in the home automation field and hundreds of industry magazine articles. He is a CEDIA (Custom Electronics Design and Installation Association) Certified instructor, CEDIA Top-10 Instructor, and has taught hundreds of technical courses at CEDIA University, CEDIA Expo, and other industry events for the past fifteen years. His previous company, Training Dept. Seminars, created over a dozen full length video training courses in the custom electronics design and installation field. He holds a Bachelor in Architecture, and Masters Degree in Computer Science from Georgia Tech.

Tips and Techniques Compendium

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By Grayson Evans, Copyright 2020 During the early 2000's I wrote a series of "tips and techniques" for CEPro magazine. I compiled these in a small book that I sold at trade shows and online for awhile. Most of the information is still very applicable especially the retrofit techniques. You can view of download from… Continue reading Tips and Techniques Compendium

Has the 240/120V AC Residential Power Infrastructure Outlived Its Usefulness?

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Article for CEPro Magazine, August 2016, Copyright 2016, Grayson Evans Three things occurred lately that got me motivated to revisit the idea of changing the 240/120V AC infrastructure in the home. I say revisited because it’s an idea that has been debated, and even tried, since the early 1980’s, most recently in the May CEPro.… Continue reading Has the 240/120V AC Residential Power Infrastructure Outlived Its Usefulness?

An Evolution of Thermatron Homebrew Techniques

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Grayson Evans, KJ7UM, Copyright 2020First published in Electric Radio in 2019 Ever since I started work on Hollow-State Design, I’ve been trying to develop techniques to prototype thermatron projects as easily as the typical QRP “manhattan style” solid-state construction project.  Homebrew thermatron projects still seem to be using the same construction techniques used in the… Continue reading An Evolution of Thermatron Homebrew Techniques

A New Approach to Receiver Front-end Design (Revisited)

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Grayson Evans, KJ7UM, Copyright 2020Published in Electric Radio, 2020 In September 1963, QST published an article by William Squires, W2PUL,  A New Approach to Receiver Front-End Design. It described the work of Squires in designing an experimental front-end that used the then fairly new RCA 7360 beam-deflection tube.  I was completely fascinated by the article. … Continue reading A New Approach to Receiver Front-end Design (Revisited)