Theory of the Quadlongs 4/6-m-Quadlongs 2-m-Quadlong 2-m-4x-Quadlong 2-m-4x-Oblong The Hentenna (2 m, 4m, 6 m)
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The DK7ZB-

Quadruple-Quadlong  for the 2-m-Band

The left picture shows the stacked array of the 2x quadruple Quadlong at DF0MU.

Antennas built 

by Andreas, DL6YEH

 

DF0MU is the winner of the

UKW-Contest-Pokal 2011 in Germany. Congratulation!

The stacked Quadlongs built by

Gunter, DL2DRG

 

The QTH is in JO70IT

 

A second hybrid version see down!

Gain 9,0 dBd

F/B 10 dB

3-dB-angle hor. 75,0

3-dB-angle ver. 36,2

 

Feedpoint 

50 Ohm

Height

2,85 m

 

The horizontal parts are made with 4x1-mm brass tubes, the vertical parts are made with flexible copper-wire (2,5 mm diameter).

Big azimuth-angle for contest- and portable-operation. The whole antenna can be folded to a small package.

 

Parts

Material

Length

 

Reflector- distance

320 mm

Radiator

horizontal

4x1-mm brass tube

258 mm

vertikal

2-mm-flexible copper wire

715 mm

Reflector

horizontal

4x1-mm brass tube

280 mm

vertical

2-mm-flexible copper wire

715 mm

The 50-Ohm-Choke for the symmetrical feeding:

5 turns of PTFE-coax on  a 25-mm-PVC-tube

You can handle 250 Wtts RF

The boom parts with a PVC-square-tube

The DK7ZB-Quadruple-Hybrid-Quadlong  for the 2-m-Band

Gain 9,2 dBd

F/B 20 dB

3-dB-angle hor. 72,4

3-dB-angle ver. 36,0

 

Feedpoint 

50 Ohm

Height

2,85 m

 

 

 

Parts

Material

Length

 

Reflector- distance

 320 mm

Radiator

horizontal

4x1-mm brass tube

276 mm

vertical

2-mm flexible copper wire

715 mm

 

Reflectors

 

horizontal

3,2-mm aluminium

1050 mm

4-mm aluminium 1049 mm
6-mm aluminium 1048 m

The clamp for the mounting of the boom