There are two of them 2.4 GHz and 5 GHz.
Sometimes you need to check what frequency they broadcast on.
People who are looking for affordable security cameras that are also easy to use should install wireless surveillance cameras. These cameras eliminate the lengthy cables and wires that are used in traditional home security cameras. In fact, standard cameras literally have hundreds of feet of wires. Wireless surveillance cameras use the same type of technology as routers, such as 2.4 GHz frequency for transmitting signals. However, the biggest concern with wireless cameras is interference with other wireless devices including routers and cordless phones.
Wireless N routers have better range and much better transfer speeds than G routers.
Faster Wireless Computing is possible with the wireless n routers. Wireless routers can be very confusing to most consumers. Walk into any store and there are dozens of wireless routers stacked high for inspection. At one time the wireless g routers were the standard. Now more consumers are opting for the higher speed wireless n routers. Those who are ready to upgrade their wireless router should definitely purchase the wireless n routers that support the 802.11a/b/g/n WiFi.
2.4 GHz and in 5 GHz too in case of IEEE 802.11n compliant wireless network
No they do not.
can you connect wireless modem to a switch which will to two routers
Wireless routers are OS-independent. Thus just get a good wireless routers with N compatibility.
Wireless access points are created by installing wireless routers. These routers are providing the opportunity for other devices to get wireless access to a network and or internet.
apple routers
There are many types of wireless routers and bandwidths. The later the alphabet the more recent the addition. The current routers have a N designation.
Routers may be provided by your local cable company for a small rental fee per month as part of your bill. To research top ten wireless routers this link may be helpful, http://www.consumersearch.com/wireless-routers.