My reply seems to have disappeared. We used GB522 long ago, before Rogers
and Arlon and Taconic came with their modern products. I'll see if I can
find any old references.
/Inge

-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För McGlaughlin, Jeffrey A
Skickat: den 24 mars 2008 20:10
Till: [log in to unmask]
Ämne: Re: [TN] Dielectric Board material

Eric -

I haven't seen any replies so I will put this out to see if it helps. In
the realm of MIL-S-13949 GB/GBN was Laminate, Woven E-glass reinforced,
polyfunctional epoxy resin, hot strength retention the 522 would be 52.2
mils thick. I don't now of any companies who made materials under this
spec but a search of the QPL might yield something.

Good Luck,

Jeffrey McGlaughlin, CID 
Engineering Designer 
Battelle 
505 King Avenue 
Columbus Ohio 43201-2693 
(614)424-7582 Phone 
(614)458-7582 Fax 



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Eric Kalgren (Cobham
DES SSA)
Sent: Friday, March 21, 2008 4:08 PM
To: [log in to unmask]
Subject: [TN] Dielectric Board material

Have any of you ever heard of "GB 522" as a type of dielectric board
material?  I have a drawing from 1968 that calls out "GB 522, 1/16 THK,
Close Tol 1OZ CUY 1 Side."  Its an RF board so I'm guessing that the
material is something like Duroid but I'm not sure.

Any help will be appreciated!

Thanks,


Eric Kalgren

Electrical Engineer

Cobham Defense Electronic Systems
Continental Microwave Division
11 Continental Drive
Exeter, NH  03833  USA
Tel:  603-775-5200
Fax: 603-775-5201
E-mail:[log in to unmask]<mailto:[log in to unmask]>
Website:  http://www.cobhamdes.com<http://www.cobhamdes.com/>

<mailto:[log in to unmask]>


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