Re: cling film?
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Polystyrene boxes and cling film are OK for temp /P .
Problem at 1.3GHz and above are large rain drops gathering close to the feed entry which will do their dielectric thing and reduce signals .Hard to wipe off up a mast ....
Longer term radomes can use thin PTFE sheet secured across Horn/feed mouths .Ideal mounted so water slides of and cannot puddle .Use RTV silicone adhesive to retain in place .Check the installation daily from ground to ensure birds have not pecked through the sheet .A small drainage hole at the lowest point will help to eliminate and condensate .
I am a big fan of spray on or dipped Silicone conformal coating - works VERY WELL.
It is a good idea to have an idea of "average" conditions , so a daily check can be made using the system.Sun noise is a good near calibrated source or Cold Sky /ground on the higher uwave bands .
Keep up the good work .
On Sun, 24 Jan 2021 at 11:14, militaryoperator via groups.io <Military1944email@example.com> wrote: