Published: May 19, 2020, 8 a.m.
b'
Do you struggle to understand why antenna designs differ?
In this episode, I explain antenna polarization and how the design impacts it.
\\xa0
What You Need To Know
- Your antenna needs to be within the same polarity in order to receive what you\\u2019re trying to receive.
- A vertically polarized antenna will pick up vertically polarized signals better than horizontal.
- Radio waves are oscillating sine waves, and the frequency at which they oscillate is measured in a hertz.
- Vertically polarized antennas are perpendicular to the earth\\u2019s horizon
- Horizontally polarized antennas are parallel to the earth\\u2019s horizon.
- Satellites are not in a fixed position, so we\\u2019ve needed to develop circular polarization to communicate with satellites when their polarization is constantly changing.
- Vertically polarized antennas are the most common in general, and horizontally polarized antennas are common in the scanner radio hobby world.
- A common example of vertical antennas is on cars.
- Cell phones are the most common example of a need for cross-pole antennas.
- Circular antennas are good for eliminating multi-path distortions.
- A GPS and some drones use circular polarization.\\xa0
\\xa0
All session notes with links to the items we talked about an be found on our website at www.scannerschool.com/session126
You can help support Scanner School by visiting our support page at www.scannerschool.com/support
Don\'t forget to join us for our weekly net on Zello.
For info, visit https://www.scannerschool.com/zello
'