Mobile antenna: Difference between revisions
(Mobile moved to Capacity Hats) |
(Beginning of article explaining mobile antenna usage, types, and design techniques.) |
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# | Mobile antennas are designed to be used for operation while in motion. Their uses include [[Mobile antenna#Pedestrian Mobile]] operation while walking, bicycle-mounted antennas for use while riding, and the most common form, automobile-mounted antennas for use while driving. | ||
Mobile antennas should not be confused with [[portable antenna|portable antennas]], which are designed to be easy to transport and set up, but are not used while in motion. | |||
== Automobile Mobile == | |||
Mobile antennas for automobiles are usually [[vertical|verticals]] of limited height. They must allow the vehicle to be driven under an overpass or tree branch without damaging the antenna or vehicle. A common maximum height for this type of antenna is 13 feet 6 inches (410 cm). On [[VHF]] and higher frequencies this is not difficult, but [[HF]] requires that mobile antennas be [[antenna loading|loaded]]. | |||
== Pedestrian Mobile == | |||
== Mobile Antenna Design == | |||
== Capacity Hats == | |||
Refer to KE4UYP's article on [[Capacity Hats]]. | |||
Revision as of 18:16, 9 April 2008
Mobile antennas are designed to be used for operation while in motion. Their uses include Mobile antenna#Pedestrian Mobile operation while walking, bicycle-mounted antennas for use while riding, and the most common form, automobile-mounted antennas for use while driving.
Mobile antennas should not be confused with portable antennas, which are designed to be easy to transport and set up, but are not used while in motion.
Automobile Mobile
Mobile antennas for automobiles are usually verticals of limited height. They must allow the vehicle to be driven under an overpass or tree branch without damaging the antenna or vehicle. A common maximum height for this type of antenna is 13 feet 6 inches (410 cm). On VHF and higher frequencies this is not difficult, but HF requires that mobile antennas be loaded.
Pedestrian Mobile
Mobile Antenna Design
Capacity Hats
Refer to KE4UYP's article on Capacity Hats.