Me, I bought one for my wife who is partially deaf. It means she can carry it around the house or even out in the garden so she can hear visitors arrival wherever she is in the house.
Ray Garner EMC consultant > Message date : Mar 08 2005, 03:10 PM > From : [email protected] > To : [email protected] > Copy to : [email protected] > Subject : Re: Radiated emission testing acc. to ETSI EN 301 489 > Nothing is missing. In this case, 301 489-3 and -1 are testing for spurious > emissions from the transmitter and ancillary equipment from 30 MHz to 1000 > MHz. If your transmit frequency is between these freqs, you are allowed to > disregard the carrier (in this case 433 MHz). As mentioned earlier, the > emission and power tests for the carrier are covered by 300 220. > > The FCC does the same thing but they require you to put your transmitter on > a dummy load. > > Just out of curiosity, who would you sell a portable RF doorbell to? > > Bob Heller > 3M EMC Laboratory, 76-1-01 > St. Paul, MN 55107-1208 > Tel: 651- 778-6336 > Fax: 651-778-6252 > ========================= > > > > Kbalasubramanian@ > scmmicro.co.in > To > 03/08/2005 08:47 [email protected], > AM [email protected] > cc > [email protected], > [email protected], > [email protected], > [email protected] > Subject > Re: Radiated emission testing acc. > to ETSI EN 301 489 > > > > > > > > > > > > Dear Bob & Don, > > Something seem to be missing here. If this is the case then there is > no limit for the emission at the transmitted frequency. FCC specifies the > special limits for the intentional radiators and these limits are higher > than the usual limits (37 dB - CISPR). > > Sincerely > > K.Balasubramanian > Project Leader - Hardware. > > > > [email protected] > > Sent by: To: > [email protected] > owner-emc-pstc@ie cc: [email protected], > > ee.org > [email protected] > Subject: Re: Radiated > emission testing acc. to ETSI EN 301 > 489 > > 03/08/2005 07:56 > > PM > > > > > > > > Michal, the second paragraph in clause 4.3 of 301-489-3 states "The > frequencies on which the SRD transmitters are intended to operate shall be > excluded from conducted and radiated emissions measurements when performed > in transmit mode of operation". > > If you are testing without the standards available to you, I would > recommend purchasing them. > > Bob Heller > 3M EMC Laboratory, 76-1-01 > St. Paul, MN 55107-1208 > Tel: 651- 778-6336 > Fax: 651-778-6252 > ========================= > > > > [email protected] > net.pl > Sent by: To > owner-emc-pstc@LI [email protected] > STSERV.IEEE.ORG cc > > Subject > 03/08/2005 05:22 Radiated emission testing acc. to > AM ETSI EN 301 489 > > > > > > > > > > > Hello! > I have some question. I test portable RF door bell for radiated emission > 30-1000MHz according to ETSI EN 301 489-1/3. For all range emission is low, > with the exception of 433MHz (only then I push the button on transmitter, > the bell is ringing and then emission is for 4-5s is about 60dBuV/m). How > should I qualify this? Limit is 37dBuV/m. Maybe I shouldn't test the > transmitter, only receiver? Is anywhere in this standard written that > transmitter shouldn't be tested? > Thank you > Michal > > > ---------------------------------------------------------------- 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 [email protected] > Instructions: http://listserv.ieee.org/listserv/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: > Richard Nute: [email protected] Jim Bacher: [email protected] > All emc-pstc postings are archived and searchable on the web at: > 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 [email protected] > > Instructions: http://listserv.ieee.org/listserv/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: > > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > > 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 [email protected] > > Instructions: http://listserv.ieee.org/listserv/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: > > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > > _____ Whatever you Wanadoo <http://www.wanadoo.co.uk/time/> This email has been checked for most known viruses - find out more here <http://www.wanadoo.co.uk/help/id/7098.htm> ---------------------------------------------------------------- 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 [email protected] Instructions: http://listserv.ieee.org/listserv/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: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
