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1. [Amps] Shielding Effectiveness (score: 1): Author: "Ward Silver" <hwardsil@gmail.com>; Date: Wed, 6 Oct 2010 10:13:59 -0500; Per Ott's "Electromagnetic Compatibility Engineering", section 6.10 - shielding effectiveness in dB is: S = 20 log (wavelength / 2xL) where L is the maximum linear dimension of the aperture. If you h; /archives//html/Amps/2010-10/msg00053.html (7,442 bytes)
2. Re: [Amps] Shielding Effectiveness (score: 1): Author: "Roger (K8RI)" <sub1@rogerhalstead.com>; Date: Wed, 06 Oct 2010 12:47:40 -0400; It's important to remember that hardware cloth which comes in many sizes, or screen does not normally give a good contact around the edge. If fender washers are used they basically need to be edge to; /archives//html/Amps/2010-10/msg00056.html (8,201 bytes)
3. Re: [Amps] Shielding Effectiveness (score: 1): Author: "Sam Carpenter" <sam@owenscommunication.com>; Date: Wed, 6 Oct 2010 13:03:23 -0400; So...The screen on this retrofit might not be the best: http://www.hamradiomarket.com/Articles/Ten%20Tec%20Centurion.htm Looks a little wide and not to well snugged down. N9FUT It's important to reme; /archives//html/Amps/2010-10/msg00057.html (9,676 bytes)
4. Re: [Amps] Shielding Effectiveness (score: 1): Author: Ron Youvan <ka4inm@tampabay.rr.com>; Date: Wed, 06 Oct 2010 13:06:22 -0400; The tubes are behind "expanded metal," which might be better than hardware cloth, but the holes are larger than 3/16" hardware cloth. -- Ron KA4INM - Next AReU meeting is on October 5, 2010 @ 7:30 pm; /archives//html/Amps/2010-10/msg00059.html (7,467 bytes)
5. Re: [Amps] Shielding Effectiveness (score: 1): Author: "Roger (K8RI)" <sub1@rogerhalstead.com>; Date: Wed, 06 Oct 2010 14:23:37 -0400; What I'd do in that case is take a strips of 1/8" Aluminum about 1/2" wide and sandwich the expanded SS between them and the cabinet. I'd probably use #8 or #10 pan head screws (plated Brass or SS) a; /archives//html/Amps/2010-10/msg00061.html (11,017 bytes)
6. Re: [Amps] Shielding Effectiveness (score: 1): Author: Dave M <slash_dot@msn.com>; Date: Wed, 6 Oct 2010 18:35:26 -0400; What I have been using is the scavenged shield from Microwave oven doors , it is sturdy, attractive, reasonably easy to cut and it is free, I strip back the paint on the edges and use rf gasket mater; /archives//html/Amps/2010-10/msg00064.html (12,765 bytes)
7. Re: [Amps] Shielding Effectiveness (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 7 Oct 2010 09:33:22 -0700 (PDT); Honeycomb shielding is way better than any screen or holes approach. An example -- http://www.tech-etch.com/shield/8000series.html These can sometimes be found in useful sizes from computer surplus.; /archives//html/Amps/2010-10/msg00094.html (7,841 bytes)

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