For this project i started from a nerio neri book antenne.the book describes the building of a hf three bands 10-15-20 aluminium delta loop, but i limited the design to 20m band only

On air reports confirm that this antenna is equal or better to most 2 element yagis and competitive with most 3 element yagis albeit at the same height

The pole should be about 12m high minimum 11m. 39'4 to 36. Higher is better, but then you will have to re-adjust the total length for resonance

On 40 meters, my experience is that you need at least 20 db of f/b ratio in order to be able to turn down european broadcasters enough to be able to hear the west coast stations, especially the west coast stations with dipoles and 100 watts

The antenna should tune from 1.8 to about 5MHz with 50ft 16Mtrs of cable in the loop

Portable loop is 150 feet long 50 ft per side and includes a 4:1 balun

Questa è una antenna adatta per HF realizzabile senza troppe difficoltà, l'unico inconveniente è che necessita possedere di un discreto spazio dove installarla e di almeno quattro supporti a cui agganciare i loop

For horizontal polarization the loop is fed either at the center of the baseline or at the top of the loop. For vertical polarization the loop should be fed on one of the sloping sides, at 1/4 from the apex of the delta

Delta measures 166m perimeter, has the shape of an isosceles triangle 2 identical sides are horizontal and is located at 18m from the ground, i use this antenna delta loop for my hf connections, and in particular for the 160s, 80s, 40 and 30 m

Antenna was calculated to operate at 80 meters and cut at the frequency of 3700 MHz

The delta loop antenna is one of the famous magical antennas, but in reality, the delta loop antenna is not as magical as it's reputation. despite its reputation as a multi

La delta loop è un'antenna semplicissima e molto economica, costituita da un triangolo di filo chiuso lungo un'onda intera moltiplicato per il coefficiente di velocità della RF nel filo di ram

Pro-deltaloop un programma per progettare antenne delta loop a 1,2,3 elementi

Come si comprende dal titolo, l'antenna che qui descrivo è una classica Delta Loop a tre elementi per i 40 metri, interamente realizzata con della trecciola di rame del diametro di 3 mm

Questa preferenza per la delta loop mi sollecitava la sua costruzione

A delta loop can be built for any band, limiting only the space that we have available to place it, the shape of the loop can be distorted or tilted considerably without affecting the performance too much

Vertical full wave loops, dimensions for vertical full wave loops

The radiating element is a triangle of 6.7 meters per side for a total of 20.10 meters

The antenna is a 42 m delta loop at a height of 8 to 10 m above ground, two masts made of grp. a radial of 20 m length, in order to operate the antenna on 80 m, runs around the corner, the structure then works as a dipole

The delta loop has an impedance of about 100-120 ohms. a quarter wave of 75 ohm coax is used to transform the impedance down closer to 50 ohms

The larger dimensions of the loop increase radiation efficiency as compared to the typical half-wave dipol

This delta loop is a three-sided antenna suspended high in the air by vertical supports, such as tall evergreen trees, recommended height is 40 feet or more at highest point, but higher is better

Low band operators are always looking for ways to improve their hearing, as a low-band fan, i was impressed with the ewe antenna developed by floyd koontz, wa2wvl. [1, 2] koontz shows us how to build a compact

This antenna design was brought about by a need to have a simple effective and efficient antenna using simple materials

A vertical-plane equilateral delta for 40 metres will be about 48ft 5in wide and 42ft high, this places limits on the height above ground of the lowest point, since with a 35ft low-point height, the high point is 77ft up