Talk:Waveguide flange

A fact from Waveguide flange appeared on Wikipedia's Main Page in the Did you know column on 2 December 2010 (check views). The text of the entry was as follows:

Did you know... that a good contact-connection between undamaged plain waveguide flanges can outperform a choke-connection, but a bad one can cause arcing?

A record of the entry may be seen at Wikipedia:Recent additions/2010/December.

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Did you know...

... that we got 2187 hits? Less than amazing but clearly ahead of the other six DYK articles competing for attention - and that with being third on the list and not getting the picture. --catslash (talk) 02:21, 3 December 2010 (UTC)[reply]

History

The choke flange is a clever idea. It would be interesting to know who thought of it. Old Aylesburian (talk) 10:19, 2 December 2010 (UTC)[reply]

I was unable to discover this previously, but you've prompted me to take another look and I've found Oral-History:Norman Ramsey (1995) - GHN: IEEE Global History Network. I shall study it later, when I'm not at work. --catslash (talk) 14:00, 2 December 2010 (UTC)[reply]

Norman Ramsey previously claimed this invention in Oral-History:Norman Ramsey (1991) - GHN: IEEE Global History Network. It is claimed that the invention was made at the MIT Rad Lab during the war. However Winfield W. Salisbury reckons that it was his idea - also at MIT Rad Lab between 1941 and 1942. --catslash (talk) 21:32, 2 December 2010 (UTC)[reply]

These claims are now mentioned in the article. --catslash (talk) 01:53, 3 December 2010 (UTC)[reply]

Pressurization

This is slightly off-topic; discussion of pressurization probably belongs on the waveguide (electromagnetism) page. However, as I've just reverted an edit, I'll expand on my reasons. As a quick trawl of the web will convince you, pressurization of waveguides is nor restricted to outer space. High-power ground-based systems such as radar feeds are often pressurized. In the past an atmosphere of sulphur hexafluoride was used, but I'm not sure if this is still allowed. Also low-power outdoor installations are are often (slightly) pressurized with dry air to prevent the ingress of moisture (as was recently pointed out[1] by 98.81.3.202 (talk)). Also pressurization is used in airborne systems. I may amend the text here, to mention exclusion of moisture. --catslash (talk) 22:43, 18 April 2012 (UTC)[reply]