4 ELEMENTS YAGI                                                            

                                                          13DX010 Nico                                                                                                                                                                                                                    47SD109
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 ouwer mast and rotating system. Light 4 element can still be used with light rotators like channelmaster although their life is reduced with extra bearings this again is lenght. But better is to put a system on your mast like a G600 or an equivelent and a heavy duty 4 elements with this you will have a long lasting solution and one wich is able to make some great DX-results.

short version BOOMLENGTH  5,69M Type : HPSD 4 S

Design frequentie = 27,55 Mhz	A = 4,57 m	G = - 1,59 m
Gain = 7 dBD	B = 5,02 m
F/B = 22 dB	C = 5,19 m
Beamwith = 85,2 deg	D = 5,46 m
Bandwith = 800 Khz	E = 2,60 m
Element thickness = 22 mm	F = 1,50 m

      

Above mentioned you can see the schematic diagram (not drawn to scale) and the antenna his radiation pattern in the azimuth plane.


long version BOOMLENGTH 6,82 m Type HPSD 4 L

Design frequentie 27,55 mhz	A = 4,935 m	G = 2,22 m
Gain = 8 dBD	B = 5,08 m
F/B = 30,2 dB	C = 5,18 m
Bandwith =  700 Khz	D = 5,48 m
Beamwith = 67,7 degrees	E = 2,49 m
Element thickness = 22 mm	F = 2,01 m

The pattern diffrence from the one mentioned above:


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