OOPs. I just looked at your pictures, and see you were using R5H mmcx single antenna port cards, properly terminating Nconnectors, and thick pigtails. Clearly there is no better way to test accurately than how you tested. That is a big surprise, and valuable to know.
Would still be interested in seeing the real results of how much foil isolation will help or not. It would also be interesting in getting data comparing RB600 or 800 (side by side slots) when actually in a metal case. The RF results may be much different out of the case. What really matters is how much worse stacking the slots is, inside a case compared to other SBCs inside a case. And it would be great to see how this compares with other card brands. Is it the R5H, an AMPed card causing the loss, or the fact that it is stacked? Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: "Kurt Fankhauser" <k...@wavelinc.com> To: "'WISPA General List'" <wireless@wispa.org> Sent: Saturday, April 24, 2010 11:27 AM Subject: [WISPA] Ever wonder how bad RB333/444 stacked cards interfere? > If anyone is like me and ever wondered how bad that stacking cards of the > same band in RB333 or RB433 interfere with each other, well, I finally > answered my own question. I've been wondering this for the past 3 years > and > no one could really give an answer, or show proof. Well I bought a > spectrum > analyzer and decided to do some testing. I plugged the spectrum analyzer > directly into the antenna port on a disabled card that was stacked on top > of > a card that was transmitting. Bleed-over on the adjacent channels started > at > -76 !!!! > > > > Won't be doing that anymore! Just thought I would share this valuable > information with the list. For more tests at different channel widths and > such check out this thread. > > http://forum.mikrotik.com/viewtopic.php?f=7 > <http://forum.mikrotik.com/viewtopic.php?f=7&t=30657&p=204642#p204642> > &t=30657&p=204642#p204642 > > > > > > Kurt Fankhauser > WAVELINC > P.O. Box 126 > Bucyrus, OH 44820 > 419-562-6405 > www.wavelinc.com > > > > > > > > -------------------------------------------------------------------------------- > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
