How long is an 80 meter loop antenna?
Length of a full-wave 80-meter loop is about 270 feet long (1005 divided by frequency in MHz) or about 67 feet per side.
Do I need a balun for a loop antenna?
Yes, a balun is needed. All balanced antennas such as dipoles, Yagis and hexagonal beams that are fed with unbalanced feed lines such as coax, require a choke balun. Without a choke balun, common mode RF currents flow on the outside of the coax making the feedline act like another antenna.
What is a 4 1 balun used for?
A balun with a ratio of 4:1 or more will transform the already low impedances appearing on some bands to even lower values. This will greatly reduce system efficiency and reduce tuner power ratings. The 1:1 ratio balun will just pass the low impedance through.
How high should dipole be?
Recommendation. For best results, dipoles should be at least 1/2 wavelength above ground level. For the lower bands, especially 160-40 meters, this can become impractical–place your dipole as high as your situation allows.
What are good antenna for 80 meters?
160M Windom
What is 80 meter loop?
The RADIO WORKS’ SuperLoop 80™ is a high performance, full size, full-wave, 80 meter loop antenna. On 40 meters the SuperLoop 80™ is a 2 wavelength open loop or Bi-Square. The stub in the top leg of the antenna opens the loop when operating on 40 meters and selected other bands. This improves the antenna’s radiation pattern.
What is the best wire antenna for HF?
What is the best wire antenna for HF? The most popular HF antenna for hams with trees to use as antenna supports is the dipole. A reduced-size 80-meter antenna designed for small lots, portable use, and a fine companion for QRP or the Warbler PSK31 Transceiver .
What is a 80 meter band?
The 80-meter or 3.5 MHz band is a band of radio frequencies allocated for amateur radio use, from 3.5 to 4.0 MHz in IARU Region 2 (consisting mostly of North and South America), and generally 3.5 to 3.8 or 3.9 MHz in Regions 1 and 3 (the rest of the world) respectively. The upper portion of the band, which is usually used for phone (voice), is sometimes referred to as 75 meters.