Hah! I almost brought up RTV line power. I made a power calculator spreadsheet awhile back and I determined that +/-190V can deliver 25W over 10,000ft on one 26ga pair. Or something like 100W to 5000ft on 22ga. That’s expensive hardware, but a couple of DC-DC will do the job at 650ft.
The problem is that while stepping up the voltage on the power circuit is straightforward, it’s not so easy to do that with the actual Ethernet signal. You could run two cables in parallel and use one cable to carry power to switches or bridges along the path. Or just buy the silly extender devices. No need to play around when they make a product for this. Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ From: AF <[email protected]> on behalf of Chuck <[email protected]> Sent: Friday, November 7, 2025 7:36:23 PM To: [email protected] <[email protected]> Cc: [email protected] <[email protected]> Subject: Re: [AFMUG] PoE out to 650 feet? And 380 vdc over twisted pair. Sent from my iPhone > On Nov 7, 2025, at 5:35 PM, Chuck <[email protected]> wrote: > > I have done 120vac over POE. > Sent from my iPhone > >> On Nov 7, 2025, at 1:02 PM, Dev <[email protected]> wrote: >> >> I know you can get away with it out a little past 300 feet, but is there >> some kind of powered booster that can get you out to 600-700 feet with 48 >> volt power to run a cambium 6GHz radio? This is a DC site, so no power at >> the other end of the 650 feet. >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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