The S/N's on the radios are not really close. The second two that went bad came from a different shipment from the first batch. No visible signs of vandalism. Tower has locked cage around ladder. I can't imagine vandalism, however, you never rule out anything you can prove is out.
Dave On Thu, Jun 13, 2013 at 11:25 AM, Coenraad Loubser <coenr...@wish.org.za>wrote: > Extreme bad luck - or perhaps not - are all the radios perhaps from a > faulty batch? Vandalism - Is there any sort of access control or > surveillance at the site? The first thoughts that spring to mind. > > > > On Thu, Jun 13, 2013 at 4:40 PM, David Hannum <oujas...@gmail.com> wrote: > >> Never tried that before. We always use LPU's on the CAT-5 but I've never >> put one on the antenna lead. What kind of line loss does it cause? I >> don't see that in the Tech Specs. Also, does it come with a male antenna >> connector side? >> >> Dave Hannum >> >> >> On Thu, Jun 13, 2013 at 10:35 AM, Kurt Fankhauser <li...@wavelinc.com>wrote: >> >>> Can you possibly put a polyphaser on the 9000APC? I use these:**** >>> >>> >>> http://www.tessco.com/products/displayProductInfo.do?sku=531462&eventPage=1 >>> **** >>> >>> ** ** >>> >>> ** ** >>> >>> ** ** >>> >>> Kurt Fankhauser**** >>> >>> Wavelinc Communications**** >>> >>> P.O. Box 126**** >>> >>> Bucyrus, OH 44820**** >>> >>> http://www.wavelinc.com**** >>> >>> tel. 419-562-6405**** >>> >>> fax. 419-617-0110**** >>> >>> *From:* wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] *On >>> Behalf Of *David Hannum >>> *Sent:* Thursday, June 13, 2013 10:11 AM >>> *To:* WISPA General List >>> *Subject:* Re: [WISPA] Strange problem with Canopy 9000APC**** >>> >>> ** ** >>> >>> The first radio went bad on the first antenna. The second and third >>> radios have gone bad on the second antenna. We'll probably swap the >>> antenna again this afternoon on this one.**** >>> >>> **** >>> >>> Dave Hannum**** >>> >>> New Era Broadband**** >>> >>> ** ** >>> >>> On Thu, Jun 13, 2013 at 10:05 AM, Jason Bailey <j284...@yahoo.com> >>> wrote:**** >>> >>> That's why I said antenna. It happened frequently after changing the >>> antenna. >>> >>> --- On *Thu, 6/13/13, David Hannum <oujas...@gmail.com>* wrote:**** >>> >>> >>> From: David Hannum <oujas...@gmail.com>**** >>> >>> >>> Subject: Re: [WISPA] Strange problem with Canopy 9000APC**** >>> >>> To: "WISPA General List" <wireless@wispa.org>**** >>> >>> Date: Thursday, June 13, 2013, 10:01 AM**** >>> >>> ** ** >>> >>> Moisture is not an issue. Good drip loops on both the antenna cable and >>> CAT-5 Cables. We actually sealed the entry of the radio with mastic to be >>> sure. The first radio lasted about 10 months. When it went, we first >>> swapped antennas, thinking maybe a lightning strike damaged it (we've had >>> the same effect on signal from bad antenna). That did nothing to help, so >>> we next swapped the radio. Signal back. That lasted about four weeks. >>> Swapped radio again, and signal back. Lasted about 12 hours this time.* >>> *** >>> >>> **** >>> >>> No visible damage to any of the radios. No moisture found inside. We >>> don't have capability to test in-house. Will send to SWG or Wireless Units >>> to have them take a look.**** >>> >>> **** >>> >>> Dave Hannum**** >>> >>> New Era Broadband**** >>> >>> **** >>> >>> ** ** >>> >>> On Thu, Jun 13, 2013 at 9:46 AM, Fred Goldstein >>> <fgoldst...@ionary.com<http://mc/compose?to=fgoldst...@ionary.com>> >>> wrote:**** >>> >>> On 6/13/2013 7:43 AM, David Hannum wrote: >>> > We're having an issue with a 9000APC that is very strange. Here is the >>> > situation. We have a remote water tank (stand pipe 75' high) that has >>> a >>> > few homes around it. So, we have a 9000APC and a connectorized 2450AP >>> > on the tower, both on Omni's. The antennas are on a stand almost >>> > exactly 4' apart. There are six subs on the 900MHz radio. About a >>> > month ago, I had an issue where (after about 9 months) the signal to >>> all >>> > of the customers just faded out, to the point that only two subs were >>> > still good. I swapped the antenna and that did not help. I swapped >>> the >>> > radio, and that fixed the problem. Trouble is, it only lasted about >>> > three weeks, and the same thing happened again. I swapped the radio >>> > again yesterday, and today, I'm back in the same boat. The radio in >>> the >>> > AP keeps going out. I had the climbers check the grounding, and we >>> > actually ran a dedicated ground yesterday off the water tank. My knee >>> > jerk feeling today is that maybe the radios are too close together, and >>> > the 2450 is burning up the 900. Could this be the case? Any ideas? >>> > Here is an example of what happens. Customers that run signals -47 to >>> > -57 become -70 to -75 and those who's signals were -70 and up fall >>> clear >>> > off. Swap the radio, and everything goes back to normal. This is now >>> > three radios that have gone, each lasting a much shorter time than the >>> > previous. (this one did not make it 24 hours). >>> > I can't completely rule out lightning - the tower is in a very wooded >>> > area. But usually you burn up the NIC in that case - not weaken the >>> radio. >>> > Thoughts?**** >>> >>> Interesting mystery! Clearly you don't want to blow more radios this >>> way. >>> >>> Any more clues about what may have happened right before the failures? >>> I'm wondering about weather events. Did it fail after a rain storm? >>> Water coming in to the radio or corroding the antenna connectors might >>> result. And if the antenna's connector is flaky, re-attaching it to a >>> new radio might be a temporary fix, but reattaching it to an old radio >>> might "fix" it too (temporariy). Have you examined the broken radios in >>> the shop? >>> >>> -- >>> Fred R. Goldstein fred "at" interisle.net >>> Interisle Consulting Group >>> +1 617 795 2701**** >>> >>> _______________________________________________ >>> Wireless mailing list >>> Wireless@wispa.org <http://mc/compose?to=Wireless@wispa.org> >>> http://lists.wispa.org/mailman/listinfo/wireless**** >>> >>> ** ** >>> >>> ** ** >>> >>> -----Inline Attachment Follows-----**** >>> >>> ** ** >>> >>> _______________________________________________ >>> Wireless mailing list >>> Wireless@wispa.org <http://mc/compose?to=Wireless@wispa.org> >>> http://lists.wispa.org/mailman/listinfo/wireless**** >>> >>> >>> _______________________________________________ >>> Wireless mailing list >>> Wireless@wispa.org >>> http://lists.wispa.org/mailman/listinfo/wireless**** >>> >>> ** ** >>> >>> _______________________________________________ >>> Wireless mailing list >>> Wireless@wispa.org >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless >> >> > > _______________________________________________ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > >
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