Hi,

I am looking to make a short hinged mast for a radar aerial from
aluminium tube for an inland waterways vessel. The aerial weighs 4.6
kg and mounts on a plate 210mm x 210mm. Was thinking of using a 1 1/4
inch 16 gauge aluminium tube, with a flat 10mm plate welded across the
top. Total mast length around 2.5m, with approx 1.25m above the
pivot.
Grateful for any thoughts.

TVMIA