A second hybrid version see down!
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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
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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.
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Parts
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Material
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Length
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Reflector- distance
320
mm
|
Radiator
|
horizontal
|
4x1-mm
brass tube
|
258
mm
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vertikal
|
2-mm-flexible
copper wire
|
715
mm
|
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Reflector
|
horizontal
|
4x1-mm
brass tube
|
280
mm
|
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vertical
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2-mm-flexible
copper wire
|
715
mm
|
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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 |
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The boom parts with a PVC-square-tube |
The DK7ZB-Quadruple-Hybrid-Quadlong
for the 2-m-Band
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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
|
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Reflectors
|
horizontal
|
3,2-mm
aluminium
|
1050
mm
|
| 4-mm
aluminium |
1049
mm |
| 6-mm
aluminium |
1048
m |
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The clamp for the mounting of the boom |
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