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Ethernet Optical Isolator for Lightning Protection?

Steve N4LQ
Steve N4LQ Member ✭✭
edited June 2019 in SmartSDR for Windows
Lightning season is here and I've been looking for a way to isolate the 6500 from the cable modem. I searched for an optical isolator they are rather rare. This is the lowest price I could find. http://www.mouser.com/ProductDetail/HALO-Electronics/PTI-451G0002/?qs=H3a2uBbsjVU5xxTjWnW15Q== Has anyone tried one and do you think it would be a good idea? The cable modem has no provisions for grounding to my shack ground bus.

Answers

  • W5XZ - dan
    W5XZ - dan Member ✭✭
    edited June 2019
    steve: you did look at:

    https://community.flexradio.com/flexradio/topics/ethernet_lightning_surge_protection

    right?  you don't HAVE to go optical, though.  a wi-fi range extender will do the same thing.  Just
     upgraded mine to 'AC' speed recently, but i'm not at home and cant give a device name or model..

    73

  • Stan VA7NF
    Stan VA7NF President Surrey Amateur Radio Communications Member ✭✭✭
    edited February 2017
    Use a fiber connection from your switch into the shack.  There are many configurations of which a few have been discussed on this forum.  aka media converter
  • Paul Christensen, W9AC
    Paul Christensen, W9AC Member ✭✭
    edited June 2019

    Steve,

    See this post from NN4ZZ.  You should be able to adapt it between your cable modem's Ethernet port and your router, assuming you don't have an "all-in-one" modem + router. 

    https://community.flexradio.com/flexradio/topics/using_fiber_instead_of_cat5_question

    Paul, W9AC




  • Steve N4LQ
    Steve N4LQ Member ✭✭
    edited September 2015
    In fact this is an all-in-one modem + router. 
    I was thinking the "isolator" mentioned would be nice because it doesn't require any power connection. It is not optical however. It uses transformers. 
    My modem is only 6 feet from the 6500 and computer.
  • W5XZ - dan
    W5XZ - dan Member ✭✭
    edited December 2016
    don't you think a lightning surge would fry most any small-ish transformer ??

  • Steve N4LQ
    Steve N4LQ Member ✭✭
    edited September 2015
    It has a 5kv rating but of course a direct strike would simply **** a hole in the shack wall. 
  • W5XZ - dan
    W5XZ - dan Member ✭✭
    edited December 2016
    all our utilities are under ground, but i still lose an AT&T dsl / wifi box every few years to very nearby strikes...everything is on surge suppressors too...no way i'm hard wiring my 6500 to that box !!

    this works for me:
    http://www.linksys.com/en-eu/products/rangeexpanders/RE6500
    in the shack,

    and this one sits on top of my old att dsl modem, with it's wifi turned off:
    http://www.linksys.com/en-eu/products/routers/EA6500

    50 60' away, two walls...solid connects 24/7
  • AE0MW
    AE0MW Member ✭✭
    edited January 2017
    I use these whenever I'm concerned about Ethernet suppression.

    http://amzn.com/B000BKUSS8

    Having experienced a surge that 'jumped' to Ethernet in my house I'm much more paranoid than many.

    I can't speak for how well they work because like most insurance policies you don't really know until it's too late! I didn't have them the last time...



  • Steve N4LQ
    Steve N4LQ Member ✭✭
    edited September 2015
    Yes cable modems are evil beast. The cable usually has a ground of its own where it enters the home and it provides a nice path for surges. Making my PC and especially my FLex part of that loop is scary. Surge protectors might help but I don't trust them much.
  • Walt - KZ1F
    Walt - KZ1F Member ✭✭
    edited November 2016
    I am glad you suggested that. I have one of those also. Further, I plugged my NetGear Hub into an APC surge protector and have a whole house surge protector on the service panel. And I also carry insurance on the radio, amp, ATU etc.
  • Duane_AC5AA
    Duane_AC5AA Member ✭✭✭
    edited May 2018
    I was using WiFi from the Uverse router/modem until the "stuttering" problem came along with 1.4x.  I'm hoping it gets fixed so I can re-isolate the PC from the network.  Same as you - lightning is plentiful here in the spring storms.
  • W4YXU
    W4YXU Member
    edited April 2016
    I have installed fiber optic from the shack to the router:

    2 TP-LINK MC100CM Ethernet Media Converter   
        Item #: N82E16833704015   $67.98 ($33.99 ea)                

    2 Coboc CY-OM1-SC/SC-15 49.21 ft. Orange Multimode 62.5/1 25 Duplex LSZH Fiber Patch Cable SC - SC,M-M           $32.76 ($16.38 ea)

    Newegg 3Day  $10.81
    Order Total    $111.55

    I ordered 2 cables in case I bust one while doing frequent shack re-arrangements !

    Jim
    W4YXU


  • Javier, KC2QII
    Javier, KC2QII Member ✭✭
    edited September 2018
    Steve,

     I have not used the product you mentioned but have successfully used  I have used the L-COM products in commercial applications before. 

    See http://www.l-com.com/surge-protector-cat5-5e-6-data-line-lightning-surge-protectors-poe-injectors

    Javier
    KC2QII
  • Steve N4LQ
    Steve N4LQ Member ✭✭
    edited September 2015
    Thanks....
    Fiber would be nice but I'm only going about 6 feet and this looks looks so easy. Not only would it stop surges but RF. Too bad they cost so much. 
  • Steve N4LQ
    Steve N4LQ Member ✭✭
    edited September 2015
    This device just arrived and it does not work. I'm sending it back. 
    No idea why. http://www.mouser.com/ProductDetail/HALO-Electronics/PTI-451G0002/?qs=H3a2uBbsjVU5xxTjWnW15Q%3D%3D

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