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On Mon, Jun 28, 2021 at 8:49 PM <af-requ...@af.afmug.com> wrote: > Send AF mailing list submissions to > af@af.afmug.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > or, via email, send a message with subject or body 'help' to > af-requ...@af.afmug.com > > You can reach the person managing the list at > af-ow...@af.afmug.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of AF digest..." > > > Today's Topics: > > 1. Re: AF Digest, Vol 37, Issue 147 (Ryan McAfee) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 28 Jun 2021 20:48:46 -0500 > From: Ryan McAfee <r...@n5qz.org> > To: af@af.afmug.com > Subject: Re: [AFMUG] AF Digest, Vol 37, Issue 147 > Message-ID: > < > cakc9hzy4qjkykvmhnieelozpcqgjwyetvbukmybmhvfvnuq...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > I've been using 4U blanking panels from monoprice for this. I'd gotten a > pull-out shelf to test with mounting more horizontally, but haven't > actually tried one yet. Most of those shelves need 4 post racks. > This one needs some cable management, badly. > > Ryan > > > On Mon, Jun 28, 2021 at 5:01 PM <af-requ...@af.afmug.com> wrote: > > > Message: 3 > > Date: Mon, 28 Jun 2021 17:00:19 -0500 > > From: Nate Burke <n...@blastcomm.com> > > To: AnimalFarm Microwave Users Group <af@af.afmug.com> > > Subject: Re: [AFMUG] AF Digest, Vol 37, Issue 146 > > Message-ID: <60da4673.3050...@blastcomm.com> > > Content-Type: text/plain; charset="windows-1252"; Format="flowed" > > > > Do you have any pictures of it installed? I'm curious how you mount > > that in the rack or equipment box. > > > > On 6/28/2021 4:39 PM, Ryan McAfee wrote: > > > Depending on mounting, I really like the BlueSea marine fuse blocks. > > > > > > https://www.bluesea.com/products/5031/ST_Blade_Fuse_Block_-_12_Circuits_with_Negative_Bus > > > > > > > > > On Mon, Jun 28, 2021 at 4:35 PM <af-requ...@af.afmug.com > > > <mailto:af-requ...@af.afmug.com>> wrote: > > > > > > Message: 4 > > > Date: Mon, 28 Jun 2021 16:33:39 -0500 > > > From: Nate Burke <n...@blastcomm.com <mailto:n...@blastcomm.com>> > > > To: AnimalFarm Microwave Users Group <af@af.afmug.com > > > <mailto:af@af.afmug.com>> > > > Subject: Re: [AFMUG] Tower UPS's (again) > > > Message-ID: <60da4033.3050...@blastcomm.com > > > <mailto:60da4033.3050...@blastcomm.com>> > > > Content-Type: text/plain; charset=windows-1252; format=flowed > > > > > > How do you distribute the 48/24v power? A row of fused links? > > > circuit > > > breakers? That's always been the part that looks cobbled > > > together. I > > > see Windstream rectifier racks with wire nuts, and wire just > > > hanging out > > > in the open, and an autozone inverter sitting on a shelf, so > > > apparently > > > even the Telco's don't always have good solutions. > > > > > > On 6/28/2021 12:35 PM, dmmoff...@gmail.com > > > <mailto:dmmoff...@gmail.com> wrote: > > > > You already pointed out the major plus to A/C power: It's > > > simple. Any joker > > > > can come along and plug something in. Almost every device has a > > > 110VAC > > > > option. > > > > > > > > UPS's are looking cheaper because you're getting used/refurb. > > > You'll come > > > > out more comparable with a new DC system compared to a new UPS > > > with similar > > > > runtime and capacity. > > > > > > > > I've never had a UPS as reliable as a rectifier. A handful of > > > failures out > > > > of dozens over several years does not actually sound reliable at > > > all. It's > > > > obviously tolerable to you in your scenario, but it's not telecom > > > > reliability. Scale that up to 100's of deployments and you'll > > > be chasing > > > > dead UPS's more often than you'll want to. > > > > > > > > The good rectifier systems will be -48v because that's the > > > standard for > > > > telecom power. If you're in Ubiquiti/Mikrotik land you'll have > > > to use > > > > converters to +24V. If you're in Cisco/Juniper/Arista land then > > > it can all > > > > be -48v and then you don't need the converters. > > > > > > > > I absolutely have been where you are now. If you're on a budget > > > where what > > > > you can afford is the used APC XL then maybe you just stick with > > > that. DC > > > > plant is better, but you will pay more for it and you'll pay > > > more for the > > > > routers and switches designed for it. > > > > > > > > These are all statements of opinion, but it's opinion informed > > > by 22 years > > > > of playing this game. > > > > > > > > -Adam > > > > > > > > > > > > -----Original Message----- > > > > From: AF <af-boun...@af.afmug.com > > > <mailto:af-boun...@af.afmug.com>> On Behalf Of Nate Burke > > > > Sent: Monday, June 28, 2021 12:58 PM > > > > To: Animal Farm <af@af.afmug.com <mailto:af@af.afmug.com>> > > > > Subject: [AFMUG] Tower UPS's (again) > > > > > > > > We've been using the APC SmartUPS 750XL as a Tower UPS for > > > several years. > > > > Put 2-8 100+AH AGM Batteries on them, and they've been rock > > > solid for us. I > > > > can think of only a handful of failures in the dozens deployed > > > over the last > > > > several years. I used to source them off ebay for $50-$70 each, > > > but they're > > > > becoming more and more scarce. Anybody have a recommendation > > > for a simple > > > > UPS that will do all the monitoring that the APC does and accept > > big > > > > batteries? > > > > > > > > We're a Metro-Rural Area, our power outages are usually measured > > > in Hours, > > > > not days. So I'm not as concerned with the inefficiency of > > > doing the > > > > DC/AC/DC Conversion for Runtime, just power stability during > > > > outages/fluctuations. I like the ease of connecting the > external > > > > batteries to the APC, since the XL line has an Anderson plug on > > > the back for > > > > them, and has a larger charger than the normal UPS, so recharge > > > times are > > > > very quick. > > > > > > > > When the boss goes to the WISPA Shows, his head is filled with > > > all kids of > > > > ideas, so he want's me to investigate doing everything as a DC > > > Plant, When I > > > > price that out, with chargers, voltage converters (24/48), > > > inverters, fuse > > > > protection, LVD, Monitoring, etc, it always seems like the price > > > is a couple > > > > hundred dollars of parts and it would be cobbled together. > > > > > > > > Am I missing something with doing a DC Plant? I see the telco's > > > at the > > > > sites using a rackmount rectifier with power supply modules, but > > > those are a > > > > several hundred by themselves, and they are only 48V, they don't > > > have to > > > > worry about 24v radios. When I build a site now, I drop in 2 > > > batteries, and > > > > the APC, and the site is up and running in a couple minutes. A > > > DIN rail > > > > with a couple power supplies and the box is done, and has fully > > > monitored > > > > power, and I can plug in whatever I want without any equipment > > > > modifications. > > > > > > > > -- > > > > AF mailing list > > > > AF@af.afmug.com <mailto:AF@af.afmug.com> > > > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > > > > > > > > > > > > > > > > > > > ------------------------------ > > > > > > Subject: Digest Footer > > > > > > AF mailing list > > > AF@af.afmug.com <mailto:AF@af.afmug.com> > > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > > > > > ------------------------------ > > > > > > End of AF Digest, Vol 37, Issue 146 > > > *********************************** > > > > > > > > > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > http://af.afmug.com/mailman/private/af_af.afmug.com/attachments/20210628/887ad151/attachment.html > > > > > > > ------------------------------ > > > > Subject: Digest Footer > > > > AF mailing list > > AF@af.afmug.com > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > > ------------------------------ > > > > End of AF Digest, Vol 37, Issue 147 > > *********************************** > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://af.afmug.com/mailman/private/af_af.afmug.com/attachments/20210628/a198743f/attachment.html > > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: IMG_0893.jpg > Type: image/jpeg > Size: 2548330 bytes > Desc: not available > URL: < > http://af.afmug.com/mailman/private/af_af.afmug.com/attachments/20210628/a198743f/attachment.jpg > > > > ------------------------------ > > Subject: Digest Footer > > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > ------------------------------ > > End of AF Digest, Vol 37, Issue 151 > *********************************** >
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