Question about EnGenius EOC-3220 (EOC3220)

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How to make my own wifi antenna splitter?

I just want to learn how to make my own wifi antenna splitter by two ways. Anyone knows? Please help me..Thanks in advance.

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  • Cheater Cheater Oct 24, 2007

    Hi Benimur,

    Thank you very much for alway's given me a chance to answer all my problem. Actually, I wan't my WIFI radio uses two antenna. I was already tried but I used to connect the other antenna with the previous one which the signal goes to the last antenna I installed. Probably, I need one component to split the signal into two antenna.

    Hoping that you still interested to help me.

    Best regards,




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If you are planning to use a single antenna and then use a "splitter" to connect two (2) WiFi units, I'm afraid that it will not work.

Antenna splitters are meant for receive only mode but since WiFi operates both on receive and transmit, then perhaps what you would need is a "duplexer".

Both of your WiFis would be operating on 2.4GHz band.  Theoretically, you would have to fix set your first WiFi device to operate on the lowest channel possible and the other on the highest channel possible. The channel separation translates to frequency difference; lowest for Channel 1 is 2.401GHz while the highest for Channel 11 is 2.473GHz.

Constructing your own would be at best a daunting task since you would need to be very familiar with electronic components and circuitry in the microwave region. Further, you have to have access to specialized equipment (microwave capable) such as a spectrum analyzer, swr meter, dummy loaded wattmeter and a frequency counter to say the least.  In most countries, you would also need certain licenses to do this.

With all of these in mind, your best bet might be to use individual external antennas for each WiFi device and positioned them as far away as possible from each other.  Moreover, pls bear in mind that anything between the transmitter and the antenna would introduce attenuation, insertion and return loss and this include even just the cable.


If you would still want to give it a try:

  1. Here is a   link  to  commercial duplexer for  amateur radio;
  2. Here’s a   link  to  a do-it-yourself page for lower amateur frequencies;
  3. This is a   link   to a component supplier page.

Good luck and kind regards.

Posted on Oct 24, 2007

  • Louie  Role
    Louie Role Oct 24, 2007

    HI again Philip,

    Appreciate the quick rating.

    Re your problem, can you pls post it as a new problem but specify what type or units will be attached to the splitter, what will be the operating frequencies or band and what antenna will be used.

  • Louie  Role
    Louie Role Oct 24, 2007


    Would you also rate my solution to your initial post, re the radio problem pls?

    and thanks too.



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