Chuck, Have you written any scripts to automate those din relays based on input from another application? Like if a radio or router becomes unreachable, throw relays to take the bad one out of line and put the backup one in? You've gotten me thinking ...
Mike At 10:20 PM 10/29/2009, Chuck wrote: >Or do it your way and add this to the mix, and to switch radios you don't >have to go to the tower. > >http://www.dinrelay.com > >this unit saves the trip up the hill. Small one $125 with auto reboot, 16 >port $295 > >All of our towers have these and a few repeaters. Now with auto reboot on >most of the radio boards, >it's mostly used to boot routers, switches, or hung boards. > > >-----Original Message----- >From: [email protected] [mailto:[email protected]] On >Behalf Of Mike >Sent: Thursday, October 29, 2009 7:29 PM >To: [email protected]; WISPA General List >Subject: Re: [WISPA] Fault tolerant tower deployment > >Based at least partly on what I've learned on this list: > >An enclosure can contain radios from 2 different bands with no issues. > >A dual band sector has less wind loading than one of each. > >Radios and enclosures have gotten cheaper. > >It really wouldn't be any more complicated than having a spare radio >"on the tower," if implemented properly. If an entire router or power >supply failed there would be an entirely redundant unit ready to go >into service. > >So there would be no single unit. If either radio, or either router >died, the drone would take over. Each antenna would have a redundant >radio in a DIFFERENT enclosure. > >Mike > > >At 09:07 PM 10/29/2009, you wrote: > >I think the concept of combining functionality into single units and fault > >tolerant redundancy are mutually exclusive. > > > >I believe more people have had problems with more complicated installs than > >more simple ones vs. failed components on simple installs. I think a well > >planned combination of both including redundancy where it counts would be > >best IMO > > > >Scott Carullo > >Brevard Wireless > >321-205-1100 x102 > > > > > >---------------------------------------- > > > >From: "Mike" <[email protected]> > >Sent: Thursday, October 29, 2009 9:05 PM > >To: "WISPA General List" <[email protected]> > >Subject: [WISPA] Fault tolerant tower deployment > > > >I have been thinking of putting together a fully fault tolerant tower > >setup. > > > >1 antenna; two radios. Separate CAT5, separate box. If one radio > >failed, the other would come on-line. The replacement climb would be > >taken out of the EMERGENCY category. > > > >A complete system would be a 3) 5.8 120 degree sectors, plus 3) 2.4 > >(or 900 MHz) degree sectors. 6) small waterproof enclosures would > >contain a router and one of each radio. > > > >I know on some of the MT router boards there is a fan header that > >could be used to energize a relay. Microwave relays are readily > >available and have acceptable insertion loss. Would a stripline > >divider like Cameron suggested in another thread be the answer > >instead? Passive solutions are always better. If the antennas were > >dual-band, wind load on a tower could really be lowered. Besides > >redundancy, consolidating wind load would be my goal. > > > >Has anybody done anything like this? Can't seem to find any on the net. > > > >Am I mad? Mike > > > >--------------------------------------------------------------------------- >- > >---- > >WISPA Wants You! 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