I decided to build a portable and light frame for a HF Moxon or Delta Loop Antenna.
Above you can see the centre plate. It is 1 CM thick Perspex. Its dimensions are the same as a4 paper. They are sold on ebay for a few pound. very cheap, strong and light. perfect for portable use.
There are holes drilled for four spreaders, these are to support the moxon.
There are additional holes drilled that allow me to remove two spreaders and fix one perpendicular to the plate. This creates a very large triangle to support a delta loop.