4
ELEMENTS YAGI
Serious results can be expect when you have a 4 elements Yagi, in most
cases all what the Big-guns are working you will be able to hear and
work the Dx as well.
With the 4 elements yagi we come on a point when we must pay serious
effort to our mast and rotating system. Light 4 element can still be
used with light rotators like channel master although their life is
reduced with extra bearings this again is length. But better is to put
a system on your mast like a G600 or an equivalent and a heavy duty
4 elements with this you will have a long lasting solution and one which
is able to make some great DX-results.
Boom
length 5,68m HPSD 4S |
Boom
length 6,82m HPSD 4L |
|
| Design freq: | 27,555
MHz |
27,555
MHz |
| Gain: | 7
dBD |
8
dBD |
| F/B: | 22
dB |
30,2
dB |
| Beam width: | 85,2
degrees |
68
degrees |
| Band width | 0,8
MHz |
0,7
MHz |
| Element thickness | 22mm |
22mm |
| A= | 4570mm |
4935mm |
| B= | 5020mm |
5080mm |
| C= | 5190mm |
5180mm |
| D= | 5460mm |
5480mm |
| E= | 2600mm |
2490mm |
| F= | 1500mm |
2010mm |
| G= | -1590mm |
-2200mm |
4 element short boom
Above mentioned you can see the schematic diagram (not drawn to scale) and the antenna his radiation pattern in the azimuth plane.
The pattern difference from the one mentioned above:
4 elements long boom
