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Oct 23, 2020
Category: General
Posted by: lex

I have added 2 pages to the Tools and parts section of this website. 
A rebuild of the K7QO noise generator and a new Dual tone audio oscillator

 

Oct 22, 2020
Category: General
Posted by: lex

For RF applications, one of my favorite ways to build is the ManhattanStyle  and I have build a lot of these circuits in mint tins.  One thing I'm always  struggling with are the  9V batteries holders and on/off switches. So I 3D designed and printed this 9V battery compartment with room for 1 or 2 common cheap PCB push button on/off switches (they come in lock and momentary versions).  continue reading . . . 

Oct 19, 2020
Category: General
Posted by: lex

Recently I found a page which described Roy, W7EL, Lewallens Simple & Accurate Directional Wattmeter as it was published in 2/90 QST.  Searching for more information I noticed that W1REX - QRPme also has a updated version of this Simple & Accurate Directional Wattmeter. 

continue reading . . . . 


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