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foam

foam

(OP)
Did anyone know were I can buy foam or similarly substance?

RE: foam

emersoncuming sells controlled dielectric foam. I've purchased Er=1.12 and Er=1.2 from them before. The higher Er was good to machine and form a 1-40 ghz bicone support out of it. Nice low loss too.

Here's a link for dielectric foam stock, or foam in place powders for Er=1.03 to 1.25 http://emersoncumingmp.com/findproducts/Sheet%20Stock%201/  

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