There have been OATS facilities placed on top of buildings in the past. And 60 feet of cable isn't a problem if you aren't going too high in frequency. Think - Heliax. The grounding conductors will help with power safety, but at RF how many wavelengths are they? Not exactly a "ground".
Now, the question that always come to mind when this is proposed is the following - When you are installing a TV antenna you put it as high as possible to get the best signal from the station. If higher ambient signals are around when you get higher up, why would you put an OATS there? Not picking on you, I've asked this question many times over the past 20 or so years. Ghery S. Pettit From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, December 11, 2007 8:54 AM To: [email protected] Subject: A question regarding OATS setup We are considering placing an OATS on the roof top of a building for some inhouse testing. Does anyone have any experince with OATS on roof tops? To our lab we may be required to run 60' of cable from our antenna. Does 60' sound too long? We would like to get good site attenuation out to 1GHz. Also any suggestions on material for the ground plane would be appreaciated. Since we will be running the grounding conductors before we can test the site, we wonder if we should provide more than one ground connection to the plane. Thanks, Cody - 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/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] 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/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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
