How long is a 160 meter antenna?
MFJ 1779A 160M Dipole Antennas are 265 ft. long, ultra-high quality center-fed dipoles. They will provide trouble-free 160-meter operation for many, many years.
How long is a 160 meter end fed antenna?
In fact, it looks more like an end-fed 1/4 wave 160 meter antenna (130 ft or 39.624 m long) which goes up some 25 feet (7-8 m), then over horizontally, at an average of 25 feet (7-8 m) above ground, to a tree at the far end of my property.
What is an umbrella pattern antenna?
An umbrella antenna is a capacitively top-loaded wire monopole antenna, consisting in most cases of a mast fed at the ground end, to which a number of radial wires are connected at the top, sloping downwards. The radial wires make the antenna look like the frame of a giant umbrella – without the cloth – hence the name.
How is counterpoise length calculated?
That’s because there are no specific lengths for a counterpoise. If it was a specific length, it would be called a resonant antenna radial. You can calculate the antenna radial length you need for a particular frequency of interest using the following formula: Length = 234 / frequency.
What is highly directional antenna?
Highly directional antennas are used for long distant point-to-point communication. They are used to bridge networks between two buildings that are far apart. Because these antennas are high gain, they provide the most focused and narrow beam width. A third type of highly directional antenna is the Sector antenna.
What is a Discone antenna used for?
The discone antenna or discone aerial is often used where an omnidirectional wide band or bandwidth RF antenna design is needed. The discone antenna is used for many radio communication applications from radio scanning and monitoring for the commercial or military services to the home scanner enthusiasts.
What is the geometric position where the feed of an antenna is located called?
An antenna lead-in is the transmission line, or feed line, which connects the antenna to a transmitter or receiver.
Can an antenna be any length?
Can an antenna be any length? The length of an antenna should be according to the wavelength of the signal to be broadcasted or received. The ideal size for a broadcast antenna with one end on the ground is one-fourth the wavelength i.e. (λ / 4) of the electromagnetic radiation being sent out.