I read in !emc-pstc that [email protected] wrote (in <846BF526A205F8 4BA2B6045BBF7E9A6A04675901@flbocexu05>) about 'Dual band transmitter' on Wed, 30 Oct 2002: >I have a dual band transmitter that I must test per FCC Part 15. The device >operates simultaneously at 13.56 MHz and 915 MHz and there is one external >antenna for each band; however the output is time muxed such that >transmission occurs on only one band at any given time. In order to minimize >the need for filters to prevent SA overload while measuring radiated >spurious emissions, may I test with one port terminated into 50 Ohms then >switch ports and repeat?
I suppose the 915 MHz antenna won't radiate much at lower frequencies, but if the 13.5 MHz antenna is a long whip or telescopic, it will radiate well at frequencies you would not believe. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
