A three x 5 element Yagi array for the 6m band

This system was previously used in 2021 on the main lattice tower to the west of the shack. In November 2023 it was rebuilt with 5m stacking distances on a 15mH tilt-over mast to the east of the shack. The stacking adds over 4dB in forward gain and suppresses high angle noise sources to further improve the receive performance. In addition, the high F/B of the array substantially reduces noise pick up from our solar power system (now behind the array).

Three x 5 element 6m Yagis on 4m long booms ...

 

Overall array SWR as measured at the bottom of the mast with a SARK110 analyser ...

 

The theoretical vertical radiation pattern over flat ground. Peak gain is 18.8dBi at 7 degrees elevation, with no significant higher lobes ...

 

The theoretical azimuth radiation pattern at that 7 degree elevation angle ...

 

The 3-stack array is fixed and pointed at 060 degrees. The 3dB beam width covers from KH6/VE7 to Central America/Caribbean, and LP to Africa ...