Do I need an Antenna, or a Booster, or a Modem / Router?

If you are looking to improve your cellular 3G or 4G signal strength for Voice Calls, SMS and Data this can be achieved in two ways:


Connect an external antenna to your 3G or 4G device. Your device MUST have a facility to connect a cable to it.



Our antenna cables are terminated with an SMA plug, so if your device has a different type of connector you will need a cable adapter.


Use a “Booster”, No cable connection required Keep in mind that the ONLY legal boosters able to be used in Australia are the Cel-Fi brand by Nextivity.
Your Cel-Fi Booster is connected via the supplied cable to an external antenna, plugged in to a convenient 240v mains power point / or 12V / 24V DC source. (Please note the Cel-Fi should not be placed in a hot roof space)
The Cel-Fi is then connected to the supplied internal antenna inside your premises which broadcasts the 3G or 4G signal throughout your premises.

This means that any device within range of the internal antenna will see a MUCH stronger signal, very often 5 bars throughout, depending on the size of the building and construction. Your devices, ie. phones, tablets, modems or routers will benefit from this increased signal, no cabling required.


If you are looking to improve your 3G / 4G cellular data connection only:

  • You can use the Booster scenario described above if you have a 3G  /4G cellular modem / router with its own attached, or built in 3G / 4G Cellular antenna.
  • Recommended: Use a 3G / 4G cellular modem / router and attach an externally mounted antenna connected by cable. Please note our antennas come with a cable terminated with an SMA connector. If your device uses a different type of connector you will need an adapter.


Often a dedicated 3G / 4G modem / router with externally mounted antenna(s) will provide better data throughput than the Booster scenario, if provisioned with 2 antenna sockets, and fed with a MIMO antenna. The router will then supply Wi-Fi, or cabled network connection for your data only devices.



Please Note: Purchasing only an external antenna to improve mobile phone signals will NOT improve your reception unless your phone has the capability to accept a cabled connection.

If in doubt, give us a call on 1300 37 87 00 We'll be happy to work out the best and cost effective solution for your needs.

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  • Hi i use a telstra 4g mobile wifi plus with a small outdoor aerial that plugs into it. We get a one bar signal on our phones but it is not quite strong enough what would i need to boost this signal please?

    Susan on
  • Hi, I live in the hills in Byron Shire. My 3G is so bad, that sometimes I can’t even receive a text message, phone calls are nearly impossible. About 60 meters away from the house the reception is ok . For internet we’re using an outdoor antenna on the neighbours house and a LAN cable. What do you suggest to solve my problem ? Thanks

    Ulrich Keller on
  • Hi
    We have just purchesed a property in northern nsw. Cel-fi go does not work at the house but about 600m away we can get a signal on top of a small hill. We would like to look at using a remote powered cel-fi go to pick up the signal and transmitting it down to the house area.
    Can you sugest 1/ an aerial for the booster 2/ brand of cel-fi booster 3/ transmitter to send and recieve the signal approx 600m.
    Much appreciated Rodney

    Rodney Abernethy on
  • Hi Terry, depending on location, donor towers and signal availability the waterproof coverage antenna we would possibly recommend is the Mars Outdoor panel.

    Obviously the location of the donor antenna, size of area to be covered difference from alarm devices needs to be considered. If you give us a call we’re happy to work through this with you.

    BFM on
  • Greg re: your house in Moonta Bay, if the issue is signal, yes a booster will help, but if due to congestion probably not the right solution. We have a very informative article that discusses this…

    Please give us a call I’m sure we can work out the most appropriate solution for you.

    BFM on

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