Wireless Access Point: Comparing Wireless Standards: 802.11a vs. 802.11b vs. 802.11g

Comparing Wireless Standards: 802.11a vs. 802.11b vs. 802.11g

Wireless Standard	802.11a Wireless Standard	802.11b Wireless Standard	802.11g Wireless Standard
Frequency	5 GHz Underused 5 GHz band can coexist with 2.4 GHz networks without interference	2.4 GHz Heavily used 2.4 GHz band. Interference from other 2.4 GHz devices such as cordless phones, microwave ovens, etc. may occur	2.4 GHz Heavily used 2.4 GHz band. Interference from other 2.4 GHz devices such as cordless phones, microwave ovens, etc. may occur
Speed	54 Mbps 5X greater than 802.11b	11 Mbps Cable modem service typically averages no more than 4 to 5 Mbps	54 Mbps 5X greater than 802.11b
Average Actual Throughput	27 Mbps	4-5 Mbps	20-25 Mbps
# Channels / Non-overlapping	12 / 8	11 / 3	11 / 3
Range (Range will depend on antenna gain, transmit power, the receive sensitivity of the radio card and any obstacles between path ends.)	Shorter range than 802.11b and 802.11g. Due to higher operating frequency, typically offers less range and is less capable of working through wall and floors.	Better range than 802.11a. 2.4 GHz signal travel farther, and can work through walls and floors more effectively than 5 GHz signals	Better range than 802.11a. 2.4 GHz signal travel farther, and can work through walls and floors more effectively than 5 GHz signals
Compatibility	Incompatible with 802.11b or 802.11g	Widely adopted. Will work in 802.11g networks	Backwards compatible with 802.11b networks (at 11 Mbps); Incompatible with 802.11a
Popularity	User base still relatively small. Limited selection on 802.11a equipment.	Currently has the largest user base. 802.11b is currently used in most hot spots including airports, hotels, campuses, and public areas. Wide selection of 802.11b equipment.	Latest ratified standard. With speeds up to 5 times faster than 802.11b, Expect this standard to overtake 802.11b as the standard of choice.
Cost	Most expensive	Cheapest	Since this standard's ratification, prices have dropped significantly. Pricing is competitive with 802.11b. Cheaper than 802.11a
Benefits	Excellent speed, unaffected by 2.4 GHz devices, can co-exist with 802.11b and 802.11g networks without interference	Largest user base, cheapest, used in most public hot spots, largest user base, wide selection of equipment	The speed of 802.11a with the range of 802.11b, compatible with 802.11b networks and hotspots, affordable

Protector Plus Security System

Protector Plus Security System

Protector Plus Voice Dialer security system sounds a screaming siren, flashes lights and automatically phones 4 pre-set numbers to provide your home & family with maximum protection. It's wireless and it's cool. It's also extremely easy to install with no new wiring of your home & no security technician is needed. It allows for complete security with 16-zone coverage of your house through the wireless motion, door & window sensors. The dialer will call 4 phone numbers – be it your own cell or work phone, your family, neighbors or friends. It then plays a security alert message (that you've recorded). If the first number doesn't answer, it phones the next, and so on. It's not fooled by answering machines. Once someone is reached, they can listen in to your house directly through the Protector Plus Voice Dialer.