Here is a small collection of .xlsm files, ZIPped for easy download.  These files are the work of Joe Gorley, a long time SWL and mad keen Excel user.   If you want to know what they do, download them and find out.  The average file size is just a few kb and download time is a few seconds.   Simply click the name (green text) below to download the file or, click on any image to open a larger view in a new window.
 

 

1.) Shortwave


 
  2.) Toroids
5 parts in 1 workbook


 
  3.) Op-Amps


 
4.) Tower Calculations



 
   5.) Inductance


 
   6.) Reactance



 
 7.) Wire Sizes


 
   8.) Meters


 
 

 9.) Resonance
 



 

 10.) Vectors


 
   11.) Navigation



 
   12.) Transistors


 
13) Antenna Calculations
contains 12 sub-programs for calculations on various antenna configurations of which the demo image 'Parabolics' is just one.


 

 
 14) Timings

   15) Decibels