[AMPS] Properties of plastics at 10 GHz

[Rich Measures]

>
>By coincidence I was working on a project involving use of plastics
>at near 10 GHz when the original post was made.  Ill say again,
>Rich (and you) got it wrong.  Nylon, vinyl, or delrin are poor
>absorbers at 10 GHz.  
>After reading Jon's post and agreeing with him I realized I had
>everything I needed to verify it on my work bench.  
>I measured insertion loss of a piece of waveguide then plugged it
>with delrin 1/2 Wave thick at the test freq and again checked
>insertion loss of the waveguide.  After calculating out the mismatch
>losses caused by the delrin plug I had the same insertion loss as
>before.  A plug several wavelengths long gave the same results.
>73, Bob, W5AH
>
So Delrin has virtually no loss at 10GHz, however, it melts readily in 
roller coils at HF?


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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