11.   And a wireless home network can be blocked by something as low-tech as a metal wall joist.

12.   And Sprint Chairman William T. Esrey has declared his intent to build a national wireless network.

13.   And Sprint has a wireless network and the international presence to complete the package.

14.   Another issue often raised by consumers interested in wireless home networks is security.

15.   Another will let a group of computer users set up an instant wireless network so that all their machines will be connected to each other and to the Internet.

16.   Another co-founder, Sheldon Laube, left in August to create Center Beam Inc., a company offering personal computers, wireless networks and software by subscription.

17.   Another, increasingly popular way to go is to create a wireless network.

18.   As chief financial officer, Shindler will be responsible for accounting and financial functions as Nextel prepares to raise billions of dollars to complete its wireless network.

19.   As they build their wireless networks, Sprint and its cable partners also need to upgrade the cable TV systems to carry communications and two-way video.

20.   At Mitre Corp., a nonprofit company that provides federal agencies with technology expertise, officials recently banned unauthorized wireless networks created by employees.