4 ms·
Here's a more rigid version that uses bendable copper pipe with sweat (solder) fit joints. http://tinhatranch.com/how-to-build-a-qfh-quadrifilar-helix-antenna-
by uxp 8y ago
Here's a more rigid version that uses bendable copper pipe with sweat (solder) fit joints.
http://tinhatranch.com/how-to-build-a-qfh-quadrifilar-helix-antenna-to-download-images-from-weather-satellites/ http://tinhatranch.com/how-to-build-a-qfh-quadrifilar-helix-...
- maxerickson 8y agoA fun article would be to compare a poorly constructed one to one that minds the mm's.