I have had problems with SR9 cards when cold. On a few units, also in the Arc enclosure, I have put 2 14-volt light bulbs in series and powered them from the 24 volt POE to the 411. Not a problem since then with the 2 I have tried this on.
On 2/5/2011 5:04 PM, Matt Larsen - Lists wrote: > They started failing at 0F. Temps got to -25F in a few places. > > I'm running the R52 cards in ARC Wireless enclosures. Prebuilt by my > vendor. Someone on another list suggested using a more powerful card > as the extra heat is enough to keep the board warm. > > They are all running fine now, but who knows what will happen when we > get another freeze? > > Matt Larsen > vistabeam.com > > On 2/5/2011 12:57 PM, Travis Johnson wrote: >> Matt... we have over 1,000 of the regular 411 boards in the air... >> including many point to point backhaul links. We saw temps down to -30F >> this last week and didn't have a single failure. >> >> Travis >> Microserv >> >> On 2/5/2011 11:41 AM, Matt Larsen - Lists wrote: >>> I just wanted to take this opportunity to mention that the Mikrotik >>> RB411 boards are pieces of crap. Half of the ones I have failed >>> during the cold spell this last week and it turns out that lots of other >>> people have had the same problems. It is very frustrating to see that >>> not all of the hardware we use has moved out of the amateur stage yet >>> when it comes to quality control and design. >>> >>> Glad I only ever bought ten of them. They will be getting replaced >>> with something reliable real soon. >>> >>> FWIW, the 411AH boards I have in place have been just fine. >>> >>> Matt Larsen >>> vistabeam.com >>> >>> >>> >>> -------------------------------------------------------------------------------- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> -------------------------------------------------------------------------------- >>> >>> WISPA Wireless List: [email protected] >>> >>> 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: [email protected] >> >> 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: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -- Scott Reed Owner NewWays Networking, LLC Wireless Networking Network Design, Installation and Administration Mikrotik Advanced Certified www.nwwnet.net (765) 855-1060 -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
