KM1NDY
A Secret Little Adventure Ham Radio Blog
“The Electronics Of Radio” NorCal 40B Transceiver Build Lab Notes: Problem 13
This continues a series of blog posts on David Rutledge’s text, “The Electronics of Radio”, that I am studying while building the NorCal 40B transceiver. This series of posts will not be a review of the book, nor is it a assembly manual. Rutledge presents a series of problems at the each chapter that aid …
SOTA’s Heartbreak Hill
All it takes to feel like quitting is for the journey to be long enough. I remember joking on my now long-deleted ham radio twitter account that it would take me a decade to achieve my Mountain Goat — the coveted title bestowed upon you once you reach a thousand SOTA activator points. I am …
“The Electronics Of Radio” NorCal 40B Transceiver Build Lab Notes: Problem 10
This continues a series of blog posts on David Rutledge’s text, “The Electronics of Radio”, that I am studying while building the NorCal 40B transceiver. This series of posts will not be a review of the book, nor is it a assembly manual. Rutledge presents a series of problems at the each chapter that aid …
“The Electronics Of Radio” NorCal 40B Transceiver Build Lab Notes: Problem 9
This continues a series of blog posts on David Rutledge’s text, “The Electronics of Radio”, that I am studying while building the NorCal 40B transceiver. This series of posts will not be a review of the book, nor is it a assembly manual. Rutledge presents a series of problems at the each chapter that aid …
“The Electronics Of Radio” NorCal 40B Transceiver Build Lab Notes: Problem 8
This continues a series of blog posts on David Rutledge’s text, “The Electronics of Radio”, that I am studying while building the NorCal 40B transceiver. This series of posts will not be a review of the book, nor is it a assembly manual. Rutledge presents a series of problems at the each chapter that aid …
“The Electronics Of Radio” NorCal 40B Transceiver Build Lab Notes: Problem 7
This continues a series of blog posts on David Rutledge’s text, “The Electronics of Radio”, that I am studying while building the NorCal 40B transceiver. This series of posts will not be a review of the book, nor is it a assembly manual. Rutledge presents a series of problems at the each chapter that aid …
“The Electronics Of Radio” NorCal 40B Transceiver Build Lab Notes: Problem 5D, 5E, & 6
This continues a series of blog posts on David Rutledge’s text, “The Electronics of Radio”, that I am studying while building the NorCal 40B transceiver. This series of posts will not be a review of the book, nor is it a assembly manual. Rutledge presents a series of problems at the each chapter that aid …
Debate: Does It Matter If The Secondary Windings Of A 49:1 Impedance Transformer (EFHW Antenna Unun) Change Direction Halfway Around? Does Bare Copper Wire Touching The Toroid Mess Things Up? Is “The Crossover” A Scam?
QUERY: Here are the results of a quick 49:1 [14:2 turn ratio] toroid transformer test. 1) Does it matter to transformer performance if the windings of the secondary change directions halfway through? [Answer: Yes]2) Does it matter to transformer performance if bare copper wire shorts to a ferrite toroid? [Answer: No]3) Does it matter to …
“The Electronics Of Radio” NorCal 40B Transceiver Build Lab Notes: Problem 5A, 5B, & 5C
This is a continuation of my solutions to the problems contained within “The Electronics of Radio” text by David B. Rutledge. These posts are probably only useful if you also are following along with the book and building the transceiver. [Update: The links to all problem solutions as I go through them will be posted here.] …