If you’ve received dual band modem, you have the option to connect to two different WiFi networks. In this article, we’ll talk through Dual Bands modems and the difference between the 2.4GHz & 5GHz wireless frequencies.
The term Dual band refers to a modem that works on the 2.4GHz & 5GHz Wireless frequencies. Our current Optus supplied dual band modems include:
Home Broadband (Fixed)
The main differences between the two frequencies are how they effect the range and speed of your WiFi signal as well the ease of which they can pass through solid objects (known as penetrability)
As a general rule, lower frequencies like the 2.4GHz band can travel further, are better at passing through solid objects but transmit data at a lower rate (when your device is within close range to your modem).
On the other hand, higher frequency bands such as the 5GHz band can't travel as far, have a harder time passing through dense material but offer superior speeds when your device is within close range to your modem.
Function 2.4GHz 5GHz
|Speed||Slower maximum potential speeds||Faster maximum potential speed|
|Signal Range||Less signal loss over longer distances (can be susceptible to interference from other devices working on the same frequency band)||
Greater potential for signal loss over further distances
|Penetrability||Signal can pass through solid objects with greater ease||Signal has a harder time passing through dense solid material|
Connect to the 5GHz band when:
Connect to the 2.4GHz band when:
In most cases, the 5GHz band will enabled by default. When searching for available WiFi networks, you’ll see the option to connect to both the 2.4GHz or 5GHz WiFI Network (SSID). The two networks should share the same password. You can change the name of your WiFi network and password via the modem GUI (the setting and configuration page).
The device that you're using to connect to your Home WiFi network must support AC WiFi. Most newer devices are compatible with both the 2.4GHz and 5GHz bands. If you're not sure, check your device specs (either on the manufacturers website or printed on the packaging). You'll want to look out for 802.11ac (normally listed under Wireless connectivity or WLAN).
If you're considering a WiFi range extender, you'll also want to make sure that it offers Dual Band connectivity.
I've been told that when the nbn is first connected, the speed is always slow and after about a week it gets to the speed you pay for eg 50/20 etc but it will get faster each day for a week or 6 weeks. Is this correct?
Is that something that we've advised @gearboxx? It's the first I've heard of such a thing.
What sort of speeds are you seeing on your end?
What type of NBN is connected in your area i.e. NBN-HFC, FTTP,FTTB,FTTN? If you have an NBN connection box (network termination device), try connecting a laptop or desktop directly into the assigned UNI-D port. If you run a speed test. that’ll give you the best indication of the speeds the service is able to achieve.