wireless intercom การใช้

• There are many types of wireless intercom systems on the market.
• Some wireless intercom systems communicate using the 802.11 standard.
• Wireless intercom privacy can be provided if the audio stream is encrypted.
• Some wireless intercom designs reduce this interference by using " digital spread spectrum ".
• The United States and Canada have several frequency ranges for wireless intercom systems and other wireless products.
• Most wireless intercom systems communicate by radio waves using one of the frequencies allotted by various government agencies.
• I've got these wireless intercoms from the'50s from an auction from a dentist's office.
• With battery-powered radio frequency wireless intercom units, a person can carry a station as they walk around.
• Today, products marketed by the company to consumer and commercial audiences fall within the home audio, DECT wireless intercom sectors.
• One reason to use a wireless intercom system is that the cost of retrofitting a building for a wired intercom system is high.
• The first use of encrypted wireless intercom in American football was in 1996; by 1999 it was being used in the Super Bowl.
• Telex, HME, Altair and other intercom manufacturers offer encrypted wireless intercom for corporate, military and sports team customers desiring instant voice communications with privacy.
• In professional audio, the optimum use of wireless microphones and wireless intercoms may require performing a sweep of the local radio spectrum, especially if many wireless devices are being used simultaneously.
• "Good Morning Spider " is full of self-destruction, with songs skidding to a halt after half a minute and vocals sung through toilet-paper tubes and old wireless intercoms.
• For instance, if a residence is using wireless networking which operates in the 2.4 GHz range, a wireless intercom that operates in this range may interfere with the network and vice versa.
• On 3 January 2012, Imagination Technologies announced that it will invest totalling ? million, in Toumaz Microsystems, a wireless intercom spinout of Toumaz Ltd ., and will own 25 % of the business.
• Encryption is also used to protect data in transit, for example data being transferred via networks ( e . g . the Internet, e-commerce ), mobile telephones, wireless microphones, wireless intercom systems, Bluetooth devices and bank automatic teller machines.
• "There were wireless intercoms in every room and an electronic blackboard system throughout the house where people could leave messages " from their computers on a central computer screen, Coates recalled by phone from Carmel, Calif ., where he now sells homes.