Hi Andy,
This question was posted on Interference Technology’s Antenna Forum, and received a few replies. To view the replies, please visit the link below. http://www.interferencetechnology.com/f rums.html?tx_mmforum_pi1%5Baction%5D=list_post&tx_mmforum_pi1%5Btid%5D=178 Thanks, Kate Savo Forums Editor Interference Technology http://www.interferencetechnology.com/forums/ 484-688-0300 ext 26 [email protected] From: Price, Andrew (SELEX GALILEO, UK) [mailto:[email protected]] Sent: Monday, November 09, 2009 10:57 AM To: [email protected] Subject: [PSES] Excess Emission!!!!! Hi everyone, I am wondering if anyone in the forum has come across the following problem: A 10kHz to 13.5kHz excess emission (to both the DEF STAN 59-411 Air and MIL-STD-461F Air external specs) when using a Rod antenna. This excess emission occurs with both active and passive rod antennas. The chamber has been checked to ensure that all supplies are off, lights off, no cables going in or out of the chamber with the exception of the measureing cable connected to the receivers (R&S ESIB 7 & ESU26). The measureing cable has been connected via a through bulk head connector in the chamber wall (bonded) and isolated connector with no difference observed. This problem has only recently come to light as previous measurements to DEF STAN 59-41 and MIL-STD461A-C issues lowest frequency 14kHz and testing to MIL-STDs Issues D to F there has been so far no requirements to measure down to 10kHz. There is no problem with conducted measurements to either MIL-STD or DEF STAN at this frequency range. Can anyone shed a light on what may be the cause of this problem? Regards Andy Andrew P. Price Principle Hardware Engineer, EMC Specialist SELEX GALILEO, Sensors & Airborne Systems Christopher Martin Road Basildon Essex SS14 3EL Mail Ref : K160 ( Tel Direct : +44 (0)1268 887271 ( Tel EMC LAB : +44 (0)1268 883308 ) Mobile : +44 (0)7507 854888 P Please consider the environment before printing this email. SELEX Sensors and Airborne Systems Limited Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England & Wales. Company no. 02426132 ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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]>
