Traditional intercoms and public address systems are composed entirely of analogue electronics components but many … See more

Portable intercoms are commonly used by special event production crews and professional sports teams. Performing arts venues such as theaters and concert halls often have a combination of permanently mounted a… See more

Intercom installers, suppliers, and manufacturers often use the following terms to refer to intercom components.
• Master station or base station: These units control the whole system. Master stations initiate call… See more

While every intercom product line is different, most analogue intercom systems have much in common. Voice signals of about a volt or two are carried atop a direct current power rail of 12, 30 or 48 volts which uses a pair … See more