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MarcP1
MarcP1
Explorer
September 18, 2025
Question

External Antenna for FG 40F-3g4g

  • September 18, 2025
  • 3 replies
  • 1011 views

Hi,

have got a problem with the signal of my mobile internet at a site.

The sim card is recognized by the system, but seems like there is no 4G (lte) signal, as the FG is not able to connect.

Now I am thinking of using an external antenna or at least an antenna to put as near as possible to the outsite wall. 

Right now the 40F is in the rack, which I assume, is the problem.

 

While searching for a solution I saw many suggested an extender, but I don´t want to use an extender, as we had so much trouble with them. 

 

Specifiyng my question:

Is the a recommended antenna?

Any specifications, if I need to use a long SMA cable to connect the default dipole-antennas?

 

Thanks for your help.

Regards

Marc

3 replies

Anthony_E
Staff
Anthony_E
Staff
September 22, 2025

Hello Marc,


Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.


Thanks,

Best Regards
Anthony_E
Staff
Anthony_E
Staff
September 24, 2025

Hello,

We are still looking for someone to help you.

We will come back to you ASAP.


Thanks,

Best Regards
    kaman
    Staff
    kaman
    Staff
    September 24, 2025

    Hi MarcP1,

    The release supports installing external antennas on FAP-432F, FAP-433F, FAP-U432F, and FAP-U433F models. Fortinet external antennas can help optimize coverage and overall wireless performance in various installation settings.


    Please refer to the document below for more information:

    https://docs.fortinet.com/document/fortigate/7.4.0/new-features/928288/support-external-antennas-in-select-fortiap-models-7-4-2


    https://docs.fortinet.com/document/fortiap/7.4.2/fortiwifi-and-fortiap-configuration-guide/040195/configure-fortinet-external-antenna-parameters-for-specific-fortiaps


    If you have found a solution, please like and accept it to make it easily accessible to others.


    Regards,
    Aman

      MarcP1
      MarcP1Author
      Explorer
      September 29, 2025

      Thanks for the response :)
      Are these antennas compatible to the FG40F-3g4g ?

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