Mario, if you want the FCC reference for non-use of rods: Part 15.31(a)(3) calls out ANSI C63.4-2003 as a test method and C63.4 allows rod antenna measurements under 30 MHz. But 15.31(a)(3) also excludes paragraph 4.1.5.2 of C63.4 from being used which specifies the electric field measurements under 30 MHz with monopole (rod) antennas.
Bob Heller 3M EMC Laboratory, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 ============================================================= The list of standards used by the FCC for measurements may be found at http://www.fcc.gov/oet/ea/eameasurements.html They are not consistent in using a loop antenna. For Access Broadband (in Part 15) the Commission uses loop antennas below 30 MHz (see http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-245A1.pdf . For Part 18 equipment, MP-5 specifies loops below 18 MHz and either loops or half-wave dipoles (never rod antenas) from 18-30 MHz. See http://www.fcc.gov/Bureaus/Engineering_Technology/Documents/measurement/mp5/ mp5-1986.pdf . There's possibly some room for other methods under Part 15. 15.31 says in part: Section 15.31 Measurement standards [SNIPPED] (b) All parties making compliance measurements on equipment subject to the requirements of this part are urged to use these measurement procedures. Any party using other procedures should ensure that such other procedures can be relied on to produce measurement results compatible with the FCC measurement procedures. The description of the measurement procedure used in testing the equipment for compliance and a list of the test equipment actually employed shall be made part of an application for certification or included with the data required to be retained by the party responsible for devices authorized pursuant to a Declaration of Conformity or devices subject to verification. Cortland KA5S ======================================================= From: To: emc-p...@ieee.org Cc: Grace Lin Sent: 10/21/2008 8:15:00 AM Subject: rod antenna measurement not allowed below 30 MHz for FCC Dear Members, I´ve heard that FCC will not accept rod antenna measurements below 30 MHz. This was´nt published anywhere in the rules. May I ask you to help finding a source on the FCC web site to get such important information in the future? Kind regards Mario Lehmann Geschäftsbereich European Compliance Laboratory (ECL) __________________________________________________ HERBERG. Service Plus GmbH Tel: +49 911 59835-923 Nordostpark 51 Fax: +49 911 59835-90 90411 Nürnberg mailto: mlehm...@herberg-sp.de http://www.herberg-sp.de Amtsgericht Nürnberg Geschäftsführer HRB 19587 Peter Birkmann http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
