That isn't right... you aren't using a pair of 24 gauge, not a single wire, so it's effectively 21 gauge, but that's still saying a 5v drop at 400, but a Force 300 is also going to be closer to .25 amp load during normal operation, so you're looking at more like a 2.5v drop, assuming the resistivity is correct.
Anyway, I'd expect it to work just fine. On Wed, Sep 1, 2021 at 10:18 AM Steve Jones <thatoneguyst...@gmail.com> wrote: > I have a customer fixed on using > https://i.mt.lv/cdn/product_files/GPeRqg_190928.pdf to extend his epmp > f300 radio run to 400+ feet. > if im calculating this right there will be about a 10v drop on the > 24guage cat5, taking the 30v down to 20. If it does manage to keep the > radio powered i see it burning out the poe circuit. > > hes fighting me on putting the cambium PSU at the midspan point and using > his own POE to power the extender. > > Ive been overruled about telling the customer no, so its happening, but I > want to make sure my math is correct > using https://www.rapidtables.com/calc/wire/voltage-drop-calculator.html > 24guage, 30v, .5 amp, 400 feet shows 10v drop. but im not sure about the > resistivity field > > this is a guy who runs constant latency monitoring and initiates tickets > on every blip, so i see this radio move just becoming a nightmare with this > midspan extender in play > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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