You could try replacing your CAT5 with shielded CAT5 cable and shielded RJ-45 connectors.
Just my two cents worth.... Ty Carter -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jenco Wireless Sent: Saturday, March 31, 2007 1:40 AM To: WISPA General List Subject: Re: [WISPA] fm towers FM kills Ethernet. Inductors - Period. Set to 10 Mbps until then. Brad H On 3/30/07, Edward J. Hatfield III <[EMAIL PROTECTED]> wrote: > > Nearly 40 dB of variations in the link S/N ratio? Holy cat crap, Batman! > > > > How accurate is the test equipment yielding that measurement? SNR > variations > of 40 dB means four orders of magnitude in signal levels relative to the > noise floor, a 10,000:1 change in the power ratio. No wonder the bloody > link > isn't stable! > > > > Frankly I'm not inclined to trust the accuracy of those measurements > over-much; it's been my experience that few people own or even have access > to the kind of test equipment (like Network Vector Analyzers and Power > Meters) required to properly trouble shoot microwave systems. But there > obviously IS a problem. > > > > OK, now for the (hopefully) helpful part: My hunch is that the FM > broadcast > signal, being in relatively close proximity to your antenna mount, is > generating harmonics or other spurious energy of sufficient power to > overload the front end of your radio. (Sharp Q, ultra-deep microwave > filters > are expensive and I'd be very surprised if your radio was so equipped). > > > > So, the question before you is: How important is this site to your overall > network? Is it worth the expense of having a properly trained and equipped > microwave field engineer find and characterize the problem, and suggest > some > options for corrective measures? > > > > Sorry if this sounds a bit harsh but sometimes there aren't any easy > answers > to difficult problems . > > > > Hope this helps, Ted > > > > Edward J. Hatfield III, President > > E.J. Hatfield & Company > > 5142 Edgemoor Drive > > Norcross, GA 30071-4342 USA > > 1-770-209-9236 - Office > > 1-770-209-9238 - Fax > > 1-770-560-0736 - Sprint > > 1-678-457-8411 - Cingular > > 154*273*18 - NexTel > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Friday, March 30, 2007 4:01 PM > To: wireless@wispa.org > Subject: [WISPA] fm towers > > > > mikrotik 5.8 ptp links off an FM tower. We have a ptp link with a signal > to > noise of 66 to 103. Our access points will only link for a few seconds and > quit. we have the exact same links on other towers that work great and the > one to this fm tower will not work. any suggestions? > > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
