NSA 65-6 does indeed show identical antennas. Since shielding effectiveness is a relative measurement, if you had a knowledgeable customer and you used complimentary antennas (covering same frequency range and with same polarization and not ridiculously high gain that puts one antenna in the extreme near field of the other) you might get away with dissimilar antennas such as a low gain horn and a log periodic, or (above 200 MHz) a tuned dipole working against a log periodic.
Ken Javor Phone: (256) 650-5261 From: "Paasche, Dieter" <[email protected]> Date: Fri, 31 May 2013 14:01:32 +0000 To: "[email protected]" <[email protected]> Conversation: NSA Subject: NSA For and NSA do you HAVE TO use an identical pair of antennas? Sincerely, Dieter Paasche - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
