My understanding is that this is whats done...
-----Original Message----- From: Ken Javor <[email protected]> To: EMC-PSTC <[email protected]> Sent: Wed, Aug 31, 2011 3:03 pm Subject: Re: EMI Receiver - Recommendations? I had forgotten about that fact. In what I wrote, the assumption was that an IF was being fed back to the rest of the receiver, and that it was at a lower frequency than the rf, and hence the claimed lower cable loss. But fiber is better if the entire down-conversion and detection is done at the antenna, and basically detected video is being fed back. In fact, that eliminates a lot of expense in low-loss coax. That alone could be worth several thousand $$ or pounds or whatever... Ken Javor Phone: (256) 650-5261 > From: John Woodgate <[email protected]> > Date: Wed, 31 Aug 2011 19:22:36 +0100 > To: <[email protected]> > Subject: Re: EMI Receiver - Recommendations? > > In message <ca83e27d.bf05f%[email protected]>, dated Wed, 31 > Aug 2011, Ken Javor <[email protected]> writes: > >> Then the rest of the connection all the way back to the receiver should >> be well-matched 50 Ohm sections. >> > I believe the product in question has a fibre-optic link. I wonder what > the impedance of that is. (Half serious.) > -- > OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK > When I point to a star, please look at the star, not my finger. The star will > be more interesting. > > - > ---------------------------------------------------------------- > 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://product-compliance.oc.ieee.org/ > 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://product-compliance.oc.ieee.org/ 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://product-compliance.oc.ieee.org/ 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]>
