7 ELEMENTS YAGI


                              3AT138                                                                                                  3DX013                                                                                                PKW
The antenna in the middle is from Bruno 3DX013 although it has a very small boom Bruno confirmed already 256 DXCC with the antenna.                                       

When building these antennas don't forget to enforce the boom and perhaps mast.

                                                         

                                                                            

 7 elements BOOMLENGHT 11,55 meter Type : HPSD 7 short

Atlhough this 7 elements is too short to be called a 7 elements, it has some great features for stacking.
It has a very wide SWR pattern a high Front to side and the Front to back is also over a wide region availible.
This antenna is ideal for stacking.


     
          

HPSD 7 SHORT
Design frequentie : 27,55 mhz	A = 4,72 m	H = 3 m
Gain : 9,57dBD (11,71 dBI)	B = 4,88 m	I = 2,79 m
F/B = 34,19 dB	C = 4,89 m	J = 2,07 m
F/S = 23,5 dB	D = 4,908 m	K = 1,6 m
Beamwidht = 36,2 deg	E = 4,99 m	L = 0,63 m
Bandwidht = 1,7 Mhz	F = 5,34 m	M = -1,46 m
Element thickness average = 22 mm	G = 5,48 m

                            7 elements BOOMLENGTH 14,4 m                                TYPE : HPSD 7 NORMAL

               

HPSD 7 NORMAL
Design frequentie = 27,55 mhz	A = 4,64 m	H =  3,2 m
Gain = 10,17 dBD ( 12,41 dBI)	B = 4,88 m	I =   3,45 m
F/B = 33,59 dB	C = 4,90 m	J =   2,38 m
F/S = 11,28 dB	D = 4,92 m	K =  2,07 m
Beam-width = 48,8 degrees	E = 4,96 m	L =   1,9 m
Band-width = 800 Khz	F = 5,16 m	M = -1,4 m
Element thickness average = 22 mm	G =5,56 m

       7 elements BOOMLENGTH  18 meters                                                            Type: HPSD 7 Long

               

HPSD 7 LONG
Design freq = 27,5 mhz	A = 4,65 m	H =  3,35 m
Gain = 11 dBD (13,14dBI)	B = 4,72 m	I =    4,23m
F/B = 43 dB	C = 4,84 m	J =    3,63 m
F/S = 17,2 dB	D = 4,96 m	K =   2,1 m
Beam width = 46,4 degrees	E = 5,05 m	L =    1,65 m
Band width = 600 Khz	F = 5,4 m	M = - 2,04 m
Element thickness average = 22 mm	G = 5,5 m

 
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