Quad band shortened dipole for 40, 20, 15 And 10 m bands 1:1 400W PEP SSB

169

New

Antenna type: shortened dipole for 40, 20, 15, 10 meter bands with frequency ranges of  7000kHz to 7200kHz, 14000kHz to 14350kHz, 21000kHz to 21450kHz and 28000kHz to 29700kHz with overall length of 14 meters (~ 46 ft.) (arms length: 2 x 7m/ 2 x ~23ft., 2 x 3.45m/ 2 x ~11.3ft., 2 x 2,6m/ 2 x ~8.5ft ), gain of 0dBd and maximum power handling 400W PEP SSB

More details

105,00 €

Data sheet

Frequency range7000 kHz – 7200 kHz, 14000 kHz – 14350 kHz, 21000 kHz – 21450 kHz, 28000 kHz – 29700 kHz
Working band of the antennaApprox.100 kHz for SWR less than 2 (depends ont the placement of the antenna in space)
Arms length2 x 7 m / 2 x ~ 23 ft., 2 x 3.45m/ 2 x ~11.3ft., 2 x 2,6m/ 2 x ~8.5ft
Overall length14 meters / ~ 46 feet
Gain0 dBd for the 20 meter band
Balun1:1
Maximum power load400W PEP SSB
Antenna feed50 ohm coaxial cable
Mounting heightnot less than 6 meters (~20 feet) (the higher, the better)

More info

Materials used to build this antenna have been selected with an emphasis on the best electrical and mechanical properties, and resistance against outside weather conditions. An equally important factor is the durability of these properties in the future.

Product description

For the dipole arms a hardened and prestressed copper line with a cross-section of 2,5sqmmand a harder PVC isolation is used.

On the box side of the dipole arm the wire is tipped with an eye for a M4 screw, made by ZES Dolny Kubin. It is isolated by a shrink tube on both sides. The mechanical connection with the balun is made using a simple wire loop secured with a wire clamp and, on the hanging rope side, a ceramic isolator (type 16C01 made by MFJ) is used.

The coil base is made from polypropylene tubing with an outer diameter of 40mm (~1,6 in.) and the coil is wound with a double enameled copper wire with the cross-section of 1,06sqmm.

                                           

                                                     

The antenna balun (type 1:1, 400W PEP SSB) is placed in a waterproof box with  IP65 made by SCAME, type 686.205. 

On both sides of the box are screws with closed hook ends  for mechanical attachement of the dipole wire arms; the screws are of size M5, for long lasting mechanical loads.

A more solidly made  SO239 panel connector is used, with POM diaelectricum, bolted to the box with stainless steel screws and nuts.

 

The balun transformer is wound on a ferite toroid core type AMR R4with the respective measurments of (outer x inner x height)36 x 23 x 15 mm.      

              

The arms of the dipole are electrically connected to the transformer thru a pair of M4 stainless steel screws and nuts on both sides of the box.

 

WARNING!

The connector on the antenna serves only to electrically connect with the coaxial cable. For bearing the coaxial cable, use the attached rope (with inner core made by LANEX).

Tuning of the antenna in the 20m band is done so by shortening the inner dipole arms (between the coils and the balun box). The 40, 15 and 10 m band is tuned by shortening the end dipole arms (between the coils and suspension).

After the antenna is tuned, it is necessary to insulate the ends of the arms with shrink tubing to prevent water intrusion.

The warranty does not cover damage made by overloading the balun with more power than specified on the balun`s label. Also, the warranty doesn`t cover damage caused to the balun by transmitting with an unmatched antenna. The warranty is set by EU consumer rights for 2 years.

In case of a complaint the customer will need to show his receipt/invoice so please keep your proof of purchase safe, because it also serves as the warranty certificate.