This two-element Cubical Quad antenna is designed for use on either the 10-meter ham band or the 11-meter Citizen's Band

The quad uses a single, central-fed frame with a feeder-line, therefore you must use an atu for operating this antenna

I was able to work short path to eu, ja quite easily on 40m and 30m alike, i was able to cross the south pole and check into the east coast us net on 7163 in the evenings

Determine directions of interest, East/West etc, be advised that N/S signals will be greatly diminished

The quad uses a single, central-fed frame with a feeder-line, therefore you must use an atu for operating this antenna

The quad uses a single, central-fed frame with a feeder-line, therefore you must use an atu for operating this antenna

200 ft of wire in each element with 25 foot tuning stubs, 40 ft front to back spacing, top of diamond at 135 ft, 85 ft boom as main support structure, front to back 25 db, front to side 40 db

The arrangement of the elements is as follows, from back to front, the first element supports the reflectors of 40, 20, 17, 15, 10 meters

La Quad è in generale un'antenna ad ottimo rendimento e penso che raggiunga all'incirca il guadagno di una normale 3 elementi

Antenna con un superguadagno, si tratta di una doppia quad in parallelo con un'altra identic

Spaziatura differenziata per ottenere il massimo guadagno in direttivita ed un buon rapporto FB

L'antenna detta a telaio, ed è fatta a bobina utilizzando un conduttore di circa due millimetri

All elements of the rod and arm are made of fiberglass, the idea is to rebuild this 5-band antenna

The feedline is connected to point A, which gives a horizontally polarized transmitted signal

It's constructed of all schedule 40 pvc pipe and fittings

Built a six-element 20-meter monster on a 60-foot boom

Here is a description of a 9 dBd double quad and its calculations

A spider quad antenna for hf bands 20m- 17m- 15m- 12m- and 10m, tuning with a 1:2 balun

The Quad should be fed individually with 50 Ohm coax cable per band, of course with a relay box on the boom

Quad a singolo elemento per le bande HF 10-15-20 metri ,facile da costruire

The feedpoint of a full wave length 1 × λ loop or cubical quad QQ has an characteristic impedance of approximately 115 Ω

The feedpoint of a full wave length 1 × λ loop or cubical quad QQ has an characteristic impedance of approximately 115 Ω

Feeding with feeder to a 1: 4 balun

The resulting design is a loop that is elec-trically 1 λ in the 20 meter band, fed by a matching section with a Z0 of about 800 Ωthat is λ/2 long in the 20 meter band

I started working with the half square antenna afew years ago and have one on 30m and another for 20m. they work very well for being so low