The concept behind using On-Site paging is to provide a low cost way of notifying individuals within your building or campus. There are no monthly fees or special licensing requirements with this type of system.

The main difference between on-site paging systems and the typical pager that you see around town is that the on-site pagers have a limited paging range in which they will function.

Generally in an open field test they have a range of two miles however, in actual use they typically have less then a one mile range. The range limitations are due to obstructions such as buildings, walls and trees which will can an effect on how far you can transmit a page.

There are two common types of on-site paging systems:

27 MHz systems
460 MHz systems

The 27MHz system operates in the Citizen Band. They have transmitter wattage of 5-7 watts and their optimal antenna should be 3-6 feet long. The typical coverage area is about a quarter of a mile.

The 460 MHz systems operate in the UHF FM spectrum. They have transmitter wattage of 2 watts and use an antenna of only 4 inches long. The typical coverage area is up to one mile.

The main difference between the two systems is that the 460 MHz system will out perform the 27 MHz system in distance and reliability due to the frequency that they operate in. They are less susceptible to interference and can penetrate through walls better then the 27 MHz system.

A good analogy would be with cordless phones. The early cordless phones worked well if you were standing in the same room as the base unit. If you moved into another room you would often get static and interference.

With the new 900 MHz cordless phones you can walk all around your house and even into the neighborhood without having any inference.

At Xcelerate Sales we offer the 460 MHz system manufactured by Scopeä.