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Flex 6300 Ethernet port

on7wp
on7wp Member ✭✭
in FLEX-6000 Signature Series

Yes, I saw the other post…

I run two Flex6300 on two different locations. Both suffer from RFI in the ethernet port. Transmitting high power on 160m or 80m make the radios crash. Ethernet port stops working, comes back after 2 minutes.

My antennas are top notch with Rl over 20 dB.

But when you make 1 kW on a Vertical antenna 20 meters away you have more than 3V/m field strenght.

I have 38 ethernet devices in one of these two locations. ONLY the Flex6300 goes offline. My conclusion is that the ethernet transceiver used in there is ****…

How to fix this ? Very short wire to fiber converter ??? Buy a better radio ?

Pedro ON7WP

Comments

  • on7wp
    on7wp Member ✭✭

    Lacking any schematics of the 6300, is there maybe somebody from Flex here who could give me the part number of the (bad) ethernet interface connector used so we can check the data sheets and see what can be improved ?

    Maybe there are pin compatible better ones.

    So many complaints on the internet about the RFI on the ethernet port of this radio….

    And yes, I already tried 2 tons of ferrite :-)

    Pedro ON7WP

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    edited February 26

    Pedro

    Are you 100% sure the problem is in the radio? More often than not, the RF problem is in the network switch from RF getting on the LAN cable. And, sometimes on the DC power cable to the network switch.

    The excellent RI numbers on your antennas say that the antenna is doing good work at emitting RF and it might be that RF that is impacting your network.

    Try this test and do a link.local connection with one radio and see if the problem goes away. We want to remove as much of your network as possible to run this test and help isolate things.

    If it does go away, then you need to look some other place for the loss of network communications.

    Let us know how you make out.

    link.local test instructions.pdf
  • on7wp
    on7wp Member ✭✭

    Well it is a high RF environment.

    I replaced the link from the flex to the switch by a very short 15cm long cable to a fiber converter with 2m fiber and then back to the router and all is OK.

    Just too much RF for the poor Flex. A crazy solution but it works.

    Narda EMF meter says 87 V/m :-)

    Way too much RF…

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    These might help.

    image.png
    https://www.dxengineering.com/parts/dxe-iso-plus-2
  • Gord-VA7GP
    Gord-VA7GP Member ✭✭✭

    @on7wp

    There is an Immunity Standard (EN61000-4-3) for electronic products, to incident RF .. and that standard for Class A device is 10V/m

    If you are in that 87V/m zone, I may suggest you move away. And it seems likely that many of your electronic devices will be affected.

    Good luck! Safe hamming!

  • John KB4DU
    John KB4DU Member ✭✭✭✭

    Also, confirm which cat (4,5,6) is in use. and Fiber is a reasonable alternative.

  • on7wp
    on7wp Member ✭✭

    Move away is kind of difficult, we don't have acres of land here..

    When using my beam at 80 feet high no issue but I am in the near field of my low band antennas, running 1,5 kW on a 160m vertical antenna 15 meter from you gets these numbers..

    In EU equipment should work only till 3V/m !

    But all my other stuff is just fine… Cat 6 everywhere.

    For Mike, the DX engineering devices are just back to back wired ethernet transformers. You can make these yourself for a few dollars…. But not enough…

    Fiber works.

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    They are a few more things that that. If you have the skills, like anything, you can build it much less than the commercial one. The same is true for antennas, etc.

    If you don't have the skills then you have no choice but to look for alternatives.

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