I drew this document with info obtained from G0KSC's website: www.g0ksc.co.uk

Where to get the parts:

Stauff Clamps

Green plastic clamps: https://www.pipelineproductsdirect.com/p-24162-2127-pp.aspx

Aluminium clamp to ground the loop: https://www.pipelineproductsdirect.com/p-23238-2127-al.aspx

Metal for Boom and Elements:

Aluminium Warehouse

You'll need 1 x 5m length of 1.25 Inch square tube for the boom

2 x 5m lengths of 1/2 inch round tube for the elements (10m in total)

1:1 Balun:

https://www.g0ksc.co.uk/more-news/ferrite-core-1-1-baluns/144mhz-G0KSC_Antenna_parts.html

Plastic elements ends and boom cap to neaten the job:

https://www.g0ksc.co.uk/more-news/boom-a-element-end-caps.html

THIS ANTENNA IS ONE LENGTH, YOU COULD SPLIT IT IN TWO SECTIONS AND WOULD THEN REQUIRE A BOOM JOINER WHICH G0KSC ALSO STOCKS HERE

I felt this method had closer spacing of the coax legs (balun) and more purchase on the element

I originally chose this method but I felt there wasn't enough aluminium being held by the stauff clamp. If i build again I will use this method as its neater

Dipole centre conductor is made from a piece of plastic kitchen chopping board!

By careful adjustment of the driven element 'trombones' you can tweak the SWR to your preferred frequency