Hello Jack, erm... the winner is sidney mwahahah :)
-- Best regards, evilbunny mailto:[EMAIL PROTECTED] http://www.SydneyWireless.com - Exercise your communications freedom to make it do what you never thought possible... Sunday, September 22, 2002, 12:13:56 AM, you wrote: JU> Hello evilbunny, JU> Passive repeaters do get the creative juices going. If we had more 802.11b power JU> to work with we could have more fun with them. JU> For those who might wish to put an image with the "periscope antenna" name, here's JU> a link to a periscope antenna drawing. JU> http://exadios.d2.net.au/Wireless/Antennas/periscope.html JU> We can see these in the U.S. along some railroad lines. They're the towers with a JU> flat reflector at the top that is JU> angled at 45 degrees. JU> BTW, I looked at your www.sidneywireless.com website. All I can say is "very, very JU> nice". JU> jack JU> evilbunny wrote: >> Hello Jack, >> >> Passive repeaters have been done to death on other lists I'm on, some >> of the guys even giving very in depth reasons into why they won't work >> and what cringly said was a load... in any case I just thought it was >> interesting... >> >> The only time it might work, and for those of you worried about >> lightning etc, I saw a passive repeater (flat surface too) used in a >> periscope design, it served to increase height while decreasing cable >> runs... >> >> and there was one other design, the top was basically a cone and >> turned a directional signal into omni... >> >> -- >> Best regards, >> evilbunny mailto:[EMAIL PROTECTED] >> >> http://www.SydneyWireless.com - Exercise your communications >> freedom to make it do what you never thought possible... >> >> Saturday, September 21, 2002, 4:45:03 AM, you wrote: >> >> JU> Well... it depends. (Depends on what, you ask...) >> >> JU> It depends on the distance - the total distance from one radio >> JU> to the passive repeater and then to the other radio. >> JU> Briefly put: >> JU> a) The good news - A passive repeater can help you fill in or extend >> JU> coverage >> JU> to an area that has a blocked line-of-sight path. This could be helpful >> JU> say, in >> JU> NYC where you need coverage around a corner, for example. >> JU> b) The bad news - The signal loss with a passive repeater is very high. >> JU> With low power license-free 802.11b equipment (unlike licensed microwave >> JU> equipment) we can't just increase the power to make up for the passive >> JU> repeater >> JU> losses. Unless the total end-to-end distance is very short, the passive >> JU> repeater losses >> JU> mean that not enough signal will reach the far end. >> >> JU> In conclusion, if you do decide to experiment with a passive repeater, I'd >> JU> suggest >> JU> using not a single flat plane (like in your embedded link) but a pair of >> JU> high-gain 2.4 GHz >> JU> antennas connected back-to-back with a short length of low-loss coax. >> >> JU> If you need more help calculating the actual amount of signal that will >> JU> make it >> JU> to the far end (the link budget), get hold of me off-line. >> >> JU> jack >> >> JU> evilbunny wrote: >> >> >> Hello ptp, >> >> >> >> passive repeaters anyone? >> >> >> >> http://www.qsl.net/n9zia/pics/passive_repeater.jpg >> >> >> >> -- >> >> Best regards, >> >> evilbunny mailto:[EMAIL PROTECTED] >> >> >> >> http://www.NodeDB.com/NodeDB/sslinfo.php - Free Security Certificates JU> -- JU> Jack Unger ([EMAIL PROTECTED]) JU> President - Wireless InfoNet, Inc. (818) 227-4220 JU> The first and only vendor-neutral Wireless ISP workshop. JU> http://www.ask-wi.com/2002workshops.html JU> -- JU> NYCwireless - http://www.nycwireless.net/ JU> Un/Subscribe: http://lists.nycwireless.net/mailman/listinfo/nycwireless/ JU> Archives: http://lists.nycwireless.net/pipermail/nycwireless/
smime.p7s
Description: S/MIME Cryptographic Signature
