Numerous tests and comparisons have shown that the antenna, despite its simplicity, works very well

Many stations use this system all around the world and it has proven his effectiveness

Coil loadded dipole tuned for 48/80 m band by a project of I2CN

This is a vertically and horizontally polarized antenna the linear loaded 1/4 wave length vertical radiator introduces very little loss

Wirebeam yagi on 80m. Here is a diagram, this is used on I5JVA

This is a vertically polarized phased array. the left vertical wire is 180 degrees out of phase with the middle and right vertical wire, at 1/10 wavelength spacing from the right vertical wire to the left vertical wire it is producing a end-fire bidirectional pattern,that developes a gain of 5.9-dbi

Coil Q is not critical since the loss is low. Even at a kilowatt the estimated dissipation is less than 10 watts

The next installation was similar except the antenna was mounted on a 15 foot mast using the STR Kit and 2 65 foot wires as 80 meter radials

The SWR from 3.5 to 3.9 is below 1.5:1, the F/R of the array is 20dB average and with some signals even better

Il prima pezzo è lo stilo verticale alto 12 metri diametro 60-30 dove in cima ho praticato 4 fori

The total length of this antenna is 7.98 meters for each side, wire 14awg, distributed as follows first part: 6.25 meters from the central insulator to the coil. second part: coil 8 cm wide and 60 mm 2 in diameter, with 56 coils of enameled 16awg wire. third part: 1.65 meters to the insulator

First was a single wire that was matched for 80m using an omega match. this worked ok, but i started with just seven 50-foot radials, when i added eight more, the shunt worked much

I decided to make a trapped 80-160 meter vertical dipole with the feed point at 11 meters

Total Length: 24 m 79 ft. Mesh constructed with enamelled wire 0.5 mm diameter

This antenna requires only about 24 meters of free space instead of 41 meters

The tlv80 antenna is mounted on a fiberglas teleskop mast height of mast is 8 meters

80mt Control of switching directions and antenna resonances

This antenna covers the whole range at less than 1.5 : 1 SWR, depending on the height above groun

This antenna consists of three sections of a coaxial i used rg8 or rg213u of a quarter wav

A 46 ft multi band antenna for small gardens that works well on 80 metersMain bands 50 ohm are 80m / 40m / 30m / 17m / 15m / 12m, Other bands 20m / 10m

Questa antenna verticale per gli 80 metri a carico lineare, di 1/2 onda e nata dal bisogno di avere un'antenna con un buon angolo di irradiazione

On the higher bands, the same antenna is usually used for both tx and rx . the low bands are different

Costruirsi un antenna facile, economica, e soprattutto silenziosa, possiamo scegliere tra loop-magnetico e delta loop

Half-square antenna is by naturerelatively narrow band.1On80 meters, for example, an SWR be-low 2:1 can be achieved anywhere in theband, but only over a relatively small range 60 to 100 kHz

One of the biggest problems for HF operators is the lack of a good wide band antenna for 80 m

A typical, dipole antenna has bandwidth is a balanced antenna

The 80 meter and 160 meter antennas are separate, fed from a common coaxial feed line.in my case, the 80-meter and 160-meter horizontal sections are about 30 degrees apart

Use a 22 meters spiderbeam fiberglass mast with an insulated wire slightly wrapped around it

Homebrew 80/40 meter trap vertical, the trap is a coaxial cable trap, made from rg-213 cable

This article presents a 160-meter variation of this family of antennas

For the 80 m band the coil is wound with black 1.5 mm installation wire of approximately 10 m length, the antenna resonates at 3,630 mhz with a bandwidth of + and - 22 khz

The 18m glassfibre pole from spiderbeam is used, but without the top section too fragile to support the weight wind load of the 80m trap coil

Si tratta di un tubo di plastica del tipo per impianti idraulici, lungo poco meno di due metri 1850 mm

Run a wire all the way to the top of the tower sections, then measure the impedance at the bottom, then design a matching network to match the resulting impedance

On 80 and 160 meters an antenna withmodest gain and good front-to-back f/b ratio, along with a steerable pattern,can be very effective for contesting

The 80 meter inverted vee is a common and classic antenna, like all inverted vees, it requires a single center support

The 40m 4-square will be centered in the 80m one, which will be centered in the 160m 4-square, hence the triple 4-square

Tower tuned on 80m, the terminal capa is 16m high and has a diameter of 2.4m

Il dipolo è un classico trappolato, ma va meglio di quelli commerciali che ho provato, costa moltomeno e leva lo sfizio di farselo da se