How Wireless Cable Modems Work
A Cable modem wireless router is a device that perform the job of a cable modem, and also works as a router.
Internet modems are normally installed by your ISP technician during the appointment when service is started.
If your cable company offers to provide you with a “Wireless Cable Modem Router”, and you just want to connect to the Internet and surf web pages, this innovative wireless device will do fine.
However, if you have WiFi N enabled equipment you may want to inquire about what wireless standard is being installed by the technician, because not all leased equipment is of superior quality.
Make sure and ask the service technician what wireless standard the cable modem wireless router is operating at, and whether its a 802.11g or Wireless N Router.
There are a lot of Internet service providers still supplying their customers with 802.11g wireless modems, meaning that all WiFi enabled devices connecting to it will run at speeds of which G Routers provide.
Leasing or Buying:
You may want to purchase a WiFi Router separately from your cable company provided Internet modem, even if the one they install is a wireless cable modem router.
Leasing: If you choose to lease cable modem wireless router from your ISP when they start up your Internet service, they are not going to provide you one with all the fancy bells and whistles.
You’re most likely going to receive a standard 802.11g cable modem with basic wireless functionality, so make sure to ask the installer if the wireless cable modems network standard is 802.11g or 802.11n.
If it’s only built to wireless G standards, it will mean that your new laptop with its screaming fast 802.11n network adapter will down grade to G router performance, just to connect and surf the Internet.
Buying: You can also purchase your own cable modem wireless router, instead of leasing it from your cable company for a month fee, getting all the special features your wireless network needs.
Brand name networking equipment manufacturers, such as Linksys, Motorola, Netgear, Dlink and others are producing top quality wireless cable modems all rolled up into one.
Any one of these DSL Modem Wireless Router or Cable Modem Wireless Router will provide excellent performance and features for your wireless home network.
Cable Modem Wireless Router
How do wireless cable modems actually work:
Cable companies in today’s world are offering hundreds of channels to their subscribers, and your Internet connection is just another channel being sent over the coax cable.
The cable Internet signal that’s being delivered to your home through the coaxial cable gets sent to a “Tuner” in both your digital cable box, and also your cable modem.
The Internet signal for “downloading” and “uploading” are being broadcast on 2 unused cable channels, and the “Tuner” simply senses these channels and directs only those 2 channels to a “Demodulator”.
Modem stands for Modulator-Demodulator, because it modulates an analog carrier signal to encode digital information
The Carrier signal and Modulated signal are passed into the demodulator for comparison.
The demodulator takes the modulated radio frequency voltages highs and lows, and turns these high and low voltage signals into 1’s and 0’s instead. Binary!
Inside your wireless cable modems outer case is a built-in internal network card, which receives the newly created network packets, and forwards them to the “wireless router” portion of cable modem wireless router.
These Ethernet packets are then compared to wireless routers “routing table”, and forwarded to the MAC and IP address on your local wireless home network.
When uploading files to the Internet, the process is very much the same in the reverse order.
The home networks Ethernet data packet’s 1’s and 0’s are sent to the “Modulator” instead, converting the binary code back to radio frequency and onto your ISP for transport to the wide area network (WAN), also known as the Internet.
TIP: The most important consideration, when deciding if a cable modem is right for your wireless home network, is making sure that the features it contains will unleash the power of all your wireless enabled network devices throughout your home.
WHNME suggests adding a dedicated Wireless Router to your home network, because they include so many Router Settings and features that will unlock the potential of your wireless home network.