The positioning of Hex tweeters or should I say the face ( mouth) of the Hex tweeters should face horizontally if possible. This gives greater distance of reaching birds from far away.
Don’t be mistaken the Hex tweeter is not the tweeter you put on the entrance –holes or at the Open roof area where they have to be place or face at 40dg angle or higher.
The purposes of the Hex Tweeter is to call birds from farm away which can be at the nearby Oil Palm plantations, Neighbors’’ farms, the near Padi fields, etc. Not from the sky high above. Definitely they don’t come directly from the sky they are not angels.
So if your Hex tweeters whether DIY or Readymade one face more than 20 dg then it wouldn’t be effective. As the angle goes above 20 or 30 dg the sound would travel higher as it goes further and eventually wouldn’t reach those important areas where the birds congregate.
Birds play and feed above canopy of trees and above Padi fields and so on. It was mistakenly perceived the higher the Hex tweeters mouth facing the better because most would think that all birds are directly above farms and the Hex tweeters mouth should face vertically if possible.
I guess if it is not because of the rain most would want to have a Hex tweeters that face more than 45dg angle.
Even for Bazooka it should not face higher than 20 dg. Unless you don’t have a choice where there are many obstacles, such as walls and pillars that obstruct its position then you have to place the bazooka more than 20dg or higher.
Though many take this lightly as not important but in Swiftlet farming a small adjustment resulted in big changes.
Good Swiftlet farming All. The Best is to Share.