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Thread: POE max distance

  1. #1

    Default POE max distance

    Does anyone know how long the POE cable can be on a POE 15V South African Version to a Mikrotik 433 Routerboard without too much of a voltage drop?

  2. #2
    Grandmaster
    Join Date
    Apr 2005
    Location
    a paper bag in a septic tank
    Posts
    1,310

    Default

    You will probably get an answer quick on the mikrotik forums.

  3. #3

    Default

    I run 80m of ethernet to an RB433 - but my poe has 18v going into it.

  4. #4

    Default

    The min for 433 is 10v according to the product specs http://www.routerboard.com/index.php?showProduct=43.
    According to this calculator http://www.netkrom.com/voltage_loss_...alculator.html 80m on the 15V would work. Am I correct?

  5. #5
    Cape Connect Internet Rep
    Join Date
    Oct 2008
    Location
    Somerset West
    Posts
    762

    Default

    Things start getting tricky after 110m.

    If at all possible, use 24V. I know those UBNT all in one 15V PSUs are very appealing, but I've found you get more "kick" out of the radios if they're being powered by 24V.

  6. #6

    Default

    Hey portcullis, saving the day again for me haha.

    Okay will try to get some of those 24v, but for now can i use the 15v for say 60m just to get it up and running?
    Thanx again.

  7. #7

    Default

    i hade an 150m network cable on an nanostation with no problems...

  8. #8

    Default

    But then u need a biger psu than 15v, think i will try the 24v. i need to go about 100 - 120m

  9. #9

    Default

    i used the standard psu u get with the nanostation...

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