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hfloopmultibanddirectionaldj4vm

DJ4VM Loop

DJ4VM multiband loop antenna

Source: Rothammel, Vol. 1, Ch. 18.6, p. 313
Input Parameters
MHz
MHz
Results
Reflector Perimeter
21.625m
Driven Element Perimeter
21.201m
Director Perimeter
20.565m
Element Spacing
3.180m
Switch Pos (freq1 perimeter adj.)
14.151m
Switch Pos (freq2 perimeter adj.)
13.726m
Diagram
7.07 m6.12 m
Radiation Pattern
-3 dB-10 dB-20 dB0 dB0°90°180°270°Max: 1.8 dBi