> Oops. Nevermind, Milla. I do not understand your Oops. Is it because you now think different, that the possible explanation of "Tx/Rx taking two different paths" is not good? I am not sure -why I decided to write to the forum, but I think that is one possibility. Have tried Then I looked a little closer to the effects 'knife edge diffraction' => attenuation due to diffraction is proportional to the distance from the transmitter to the difracting object. Therefore, in my particular setup; 2200m (1.4miles) roof to roof, very very poor visibility -it is most likely that diffraction loss is 13dB higher in one way than the other. Yes, there is a large tower right in the middle of my line of sight belonging to an ISP, has many many antennas in it: SiteA--tower--------SiteB -49dB -62dB received received SiteA to SiteB 2200m; SiteA to tower 50m. The diffraction stuff due to the tower should have had the opposite effet. I should have less Rx power at Site A than SiteB. SiteB is located at relatively unpolluted area. I have tried swapping the Cisco 350 pci cards; but not the LM-600 (30ft) cables, because I thought if the cable was or connectors were damaged, then it would affect the Tx power as well and not only Rx. expected Signal Strength -44dBm at both ends more or less. does anyone know of a site where i can learn more aout parabolic dish, dipole and strip reflector? regards, Mila
--- David Young <[EMAIL PROTECTED]> wrote: > > On Sun, Jan 19, 2003 at 08:09:35PM -0800, Gregory > Forrest wrote: > > Milla: > > > > If you are using a single antenna at each end (a > combined TX&RX > > configuration) then the paths follow the > reciprocity principal - the > > near-end transmit signal *will* take the same path > as the signal received > > from the far end - exactly. > > Oops. Nevermind, Milla. > > Dave > > -- > David Young OJC Technologies > [EMAIL PROTECTED] Engineering from the Right > Brain > Urbana, IL * (217) 278-3933 __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
