View Single Post
  #3   Report Post  
Old April 17th 06, 02:28 AM posted to rec.radio.amateur.homebrew
Martin Potter
 
Posts: n/a
Default Does cured Epoxy absorb microwaves?

"Eike Lantzsch, ZP6CGE" ) writes:
I know that microwaves are sometimes used to cure epoxy but does
cured epoxy absorb microwaves? More practically put: can I use
epoxy to glue some parts of a double quad for 2.4GHz?


Not sure if it is relevant to modern materials, but when I worked for the
National Research Council (Canada) many years ago, I used to make dummy
loads by mixing a powdered ferrite material with the then-available epoxy
cement and pouring a tapered slab of this mix into the waveguide. (These
were used as the flat load at liquid nitrogen temperatures in a Dicke
radiometer at S and X bands.)

.... Martin VE3OAT