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EF0213M

This is a new 4 WL antenna designed with almost perfectly balanced parameters. 

Compared to EF0213 antenna, it has few Kelvin degree higher temperature and a bit less suppressed side lobes while it still has same gain. Major difference is very low Q of the antenna hence very wide band performance which makes it far less sensitive to surrounding influences as well as to weather conditions AND ALSO THIS IS VERY GOOD DESIGN FOR X-POL CONSTRUCTION

FREE SPACE DIMENSIONS

  REF DE (10mm) D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
POSITION 0 300 417 798 1390 2079 2856 3680 4552 5435 6329 7238 7940
4 mm 1024 1000 966 956 938 923 910 898 888 876 872 859 872
3/16" (4.76) 1022 1000 961 953 933 919 905 892 881 870 864 855 866
5 mm 1022 1000 962 953 933 919 905 892 881 870 864 855 864
6 mm 1020 1000 959 949 929 914 900 887 876 864 860 849 856
1/4" (6.35) 1019 1000 958 948 928 912 898 885 874 862 858 847 854
8 mm 1018 1000 952 942 921 906 891 878 866 854 850 838 842
10 mm 1016 1000 946 936 914 899 883 870 858 845 841 829 833

 

SPECIFICATIONS

 4 mm 5 mm 6 mm 1/4" 8 mm
GAIN dBi  15.96 15.99 16.02 16.02 16.05
F/B dB  27.10 26.50 27.40 27.40 27.50
TA K  225.80 225.60 224.70 224.70 224.90
G/T dB  -7.58 -7.54 -7.50 -7.50 -7.47
STACKING m

 SH = 3.850              SV = 3.700 

 

4 YAGI BAY

 4 mm 5 mm 6 mm 1/4" 8 mm
GAIN dBi  21.83 21.86 21.89 21.89 21.91
TA K  220.40 220.20 219.50 219.50 219.80
G/T dB -1.60  -1.57 -1.52 -1.52 -1.51

 

Folded dipole is same for all versions of this antenna

when built with elements through the boom, centered with dipole

 

 

 

See details of Xpol construction and measured results by Ernanno at

http://www.webalice.it/ermanno.ferriero/4%20x%20EF0213M%20%20xpol.htm

Measured array RL by VK3OF