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10.  Telex 5.8 GHz, 16.5 dBi Yagi Antenna (5816)





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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