Sound, Mind and Body Assault Weapons Detection Projects

https://www.facebook.com/photo.php?fbid=3675555835839525&set=a.1586822128046250&type=3 Inspired by the University of Illinois  antenna designs and SuperKuh  more improvised design along with some other references I found online when searching Google images, I decided to make a ~400MHz to 1GHz+ range spiral conical antenna starting with single and double bottom fed designs like Andrew McNeil' s spiral conical design videos and then a double top fed design like SuperKuh using household electrical wiring since I have some.  Some reference feed-line connector and math dimensions to consider (Note: update with better image with wavelength ratio specs), though for the bottom fed design I'll refer to Andrew McNeil's design beginning with a non-log spacing design.    Another design to consider for a final antenna with consideration regarding polarity where two antennas have a right hand polarization and two have a left hand polariz...

https://www.facebook.com/james.analytic/posts/3700434500018325 Note in the video below I forgot to add a 50 ohm load resistor as in the next video: https://www.facebook.com/james.analytic/posts/3704240619637713