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My antenna is a 4 x 29el. DJ9BV array. All elements are made of 4 mm aluminium and they are mounted insulated through the boom. Each antenna is 8.5 wavelengths long (6 m). The stacking distance is 1.7 m. The H-frame is also made of aluminium and the whole system is lightweighted and can be carried by one man. The mast is telescopic and can be raised 3 additional meters for operation.

total view
raised antenna
elevation system  
coupler and feeder  
VK4AFL 16-yagi array


I changed the feed system from coax to open tube feeder made of 6 mm aluminium tubes.

new open tube feeder system in antenna   
preamplifier box   
quarterwave sleeve balun and double slug tuner in the system   
quarterwave sleeve balun (converts unsymmetrical/symmetrical and transforms 200:50 Ohm)   
feeder system with 6 mm Aluminium tubes     
T-joint on 283 Ohm feeder     
teflon spacer with 32 mm distance     
 
 
 
 
 
 
 
 
 

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