Transcription of ALL ABOUT ANTENNAS Part 1 of a Series - …
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ALL ABOUT ANTENNAS Part 1 of a Series - …
ALL ABOUT ANTENNAS . part 1 of a Series By Bob Grove W8 JHD, Publisher, Monitoring Times N o subject is more widely discussed in the radio field as ANTENNAS , and with good reason; after you select your radio equipment, no accessory is more important. There are many myths surrounding boundaries between air masses, and they can be diffracted (scattered) by a ground clutter of reflective surfaces. Radio and light waves travel through the vacuum of space approximately 186,000 miles (that is, the lower the frequency), the more the absorption. This explains why daytime recep- tion below roughly 10 megahertz (MHz) is so poor. But, the E layer also reflects shorter- ANTENNAS , and we're going to put them to rest (300 million meters) per second, but when they wavelength (higher frequency) signals back in this Series . pass through a dense medium, they slow down; to Earth; the higher the frequency, the more this velocity factor, is given as a specifica- the reflection.
from the archives of Bob Grove MONITORING TIMES 1 N o subject is more widely discussed in the radio field as antennas, and with good reason; after you select
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