Self Build construction guidance notes...
- Tubing/Rod Sizes
All of the WA (Wave Antennas) yagi designs use 1/2 Inch (12.7mm) OD tubing for the elements and ONE Inch (25.4mm) square booms!
- Aluminium Grade
When ordering aluminium for the elements specify 6063-T832 or equivalent, best for conductivity!
WA (Wave Antennas) project boom lengths are restricted to a maximum length of 5M
- Wall Thickness
FOR LONG BOOMS OVER 4M IN LENGTH USE HEAVY WALL GAUGE
Lay out boom, mark position of reflector element, measure all other element positions from this point.
Aim for the nearest mm!
- Element lengths
Double the element lengths shown in the YO7 tables to calculate the end to end length
- Driven Element
The DE length is end to end which includes the centre gap
- Boom lengths
With the WA (Wave Antennas) designs 'BOOM LENGTH REQUIRED' = CUT YOUR BOOM TO THIS LENGTH - An allowance of +50mm at either end is included in this to give a professional finish to your yagi build!
DOUBLE CHECK YOUR MEASUREMENTS BEFORE YOU CUT & DRILL!
DO NOT ALTER THE DESIGN IN ANY WAY I.E. NUMBER OF ELEMENTS, LENGTHS, DIAMETERS OR POSITIONS. IF BUILT CORRECTLY THESE DESIGNS WILL WORK OUT OF THE BOX!