GENERAL OPERATION

Conventional Operation

This is a non-trunked operation mode which accesses independent radio channels (there is no automatic access to several channels as with trunked operation). Monitoring before transmitting may not occur auto- matically in this mode, so you may have to manually monitor the channel before transmitting to make sure that it is not being used by anyone else (see page 25). Selecting a conventional channel selects a transmit and receive frequency and other parameters such as Call Guard squelch coding.

SMARTNET/SmartZone Operation

This is a trunked operating mode that uses ID codes to select which mobiles are being called and which calls are received. Monitoring is performed automatically and special messages and tones indicate busy and out-of-range conditions. Enhanced features include roaming (Smart- Zone only), telephone, private, and emergency calls, Call Alert, and messaging. Operating features unique to SMARTNET/SmartZone chan- nels are described starting on page 34.

This radio supports only the SMARTNET II trunking protocol. It does not support the SMARTNET I (also referred to as Type I) protocol. When a SMARTNET or SmartZone channel is selected or the radio is powered up on one of those channels, it searches for a control channel and attempts to register on the radio system. Once a control channel is found, the alias (name) of the selected channel is displayed. If a control channel could not be found (because of an out of range condition or the system ID is not correct, for example), “NO SYS” is displayed and the radio continues to search for a control channel.

The control channel transmits and receives system information to and from all radios registered on the system. Therefore, once a control channel is found, it is continuously monitored for incoming call informa- tion and is used to make call requests. The radio automatically changes to a traffic channel to place and receive calls and then returns to the control channel when the call is complete.

24

Page 23 Page 25
Page 24
Image 24
EFJohnson 7700 Series manual Conventional Operation, SMARTNET/SmartZone Operation
Page 23 Page 25

FM Portable Radio Intrinsically-Safe SMARTNET, SmartZone Conventional, 7700 Series specifications

The EFJohnson 7700 Series FM Portable Radio is designed for the most demanding environments, especially in industries that prioritize safety and communication reliability. This cutting-edge equipment meets the stringent requirements for intrinsically safe operations, making it an optimal choice for first responders, industrial applications, and hazardous environments.

One of the main features of the EFJohnson 7700 Series is its adherence to the high standards of intrinsically safe certifications. This ensures that the radio can operate safely in potentially explosive atmospheres without igniting flammable gases or dust. Additionally, the 7700 series is designed to withstand harsh conditions, including extreme temperatures, moisture, and physical impact, ensuring that users can rely on it even in the toughest scenarios.

The radio supports SMARTNET and SmartZone Conventional technologies, enhancing its versatility. SMARTNET is a trunked radio system that allows for efficient use of communication channels, accommodating multiple users within a single frequency band. This is particularly beneficial for large agencies that require seamless and coordinated communication across various teams. SmartZone Conventional provides flexible interoperability, making it easy for users to communicate with different radio systems and networks.

With advanced signal processing technology, the EFJohnson 7700 series offers superior audio clarity, minimizing background noise and ensuring that messages are transmitted and received with precision. The user-friendly interface features large buttons and a bright display, allowing for easy operation even while wearing gloves or during low-light conditions. Furthermore, the radio includes programmable function keys, enabling users to customize their experience based on specific operational needs.

The EFJohnson 7700 Series is equipped with robust battery technology, providing extended operational time and ensuring that users remain connected during critical missions. The lightweight design enhances portability, making it easy to carry during long shifts. Durability features include water and dust resistance, meeting IP67 standards to ensure reliability in outdoor terrain.

In conclusion, the EFJohnson 7700 Series FM Portable Radio combines advanced technologies, safety features, and user-focused design, making it an essential tool for professionals in hazardous environments. With its commitment to reliability and efficiency, the 7700 Series stands out as a leading choice for teams that require the best in communications technology.
Top Page Image Contents