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With the recent rush to ADS-B, there has been a significant interest in GPS installations and even more interest in the antenna for those GPS installations. The interest runs the gamut from the eBay $1.99 specials to the gold-plated TSO-STC-PMA antennas, some of which are in the popular aviation catalogs ticking the $1,000 mark. The […]
In 1850, British physicist Joseph Swan began experimenting with paper coated with carbon in a glass tube that was partially evacuated from air. His paper glowed rather dimly, and the poor vacuum pumps of the day let enough oxygen into the glass tube to set the paper on fire when the electrified carbon got hot […]
First, let’s talk about “polarization”; there are three polarizations. The first two are easy.
Franklin vs. Edison, Thomson, Millikan, et al.