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4

DIGITAL

WHY DIGITAL?

Digital two-way radio technology was created to address the

problem of overcrowded frequencies – referred to as achieving

spectrum efficiency. With millions of analog radios in use,

too many users in a frequency band impacts the quality and

reliability of communications, putting safety and productivity

at risk. In certain countries, there are regulatory requirements

being implemented that mandate manufacturers to only

produce and sell digital two-way radios.

As a result, most radio manufacturers are primarily investing

in developing new digital radio technology options to meet the

growing needs for more efficient two-way radio communications.

Digital transforms the way people communicate and use two-

way radios on the job.

ANALOG LIMITATIONS

While analog radios have been used for years – there are

limitations to their performance that many users have been

conditioned to just accept:

• Audio Quality -

Background noise and static

• Inconsistent Performance -

Irregular experience in

transmitting and receiving calls

• Usable Range -

Coverage gaps in how far radios will

work effectively

• Lack Of Privacy -

No control over who can hear calls

placed over the radio

• Channel Congestion -

Distracting radio noise risking

missed important calls

• Call Management -

No easy ability to place direct calls

to select individuals or groups

• Multiple Site Connectivity

- Can only be done in Digital

DIGITAL MAKES TWO-WAY RADIO

COMMUNICATIONS BETTER

Users can achieve improved and expanded communications

capabilities with the advancements of digital technology that

overcome traditional analog performance challenges combined

with a new set of features enabling users to do more – better.

BETTER CALL QUALITY

Audio

- Digital applies error correction to eliminate noise and

static and preserves voice quality over a greater range so

users can hear what is being said crisp and clear. Use of the

AMBE+2™ vocoder further improves speech transmission

quality in noisy environments while achieving spectrum

efficiency.

Coverage

- Digital enables users to make more calls to more

places. A digital signal stays strong and clear until it reaches

its maximum range. There is no deterioration in the signal,

providing greater usable range in areas where two-way

communication was not possible in the past.

BETTER CALL MANAGEMENT

Control

- A common desire amongst analog radio users is

to control who receives a message and avoid broadcasting

messages to a wide group of listeners. Digital makes this

possible with unique IDs assigned to each radio. A user can

selectively call specific individuals or groups by selecting the

radio ID(s) to direct a message only to those who need the

information.

CALL MANAGEMENT CAPABILITIES

• Individual Call

- One user directly calls another user and

cannot be heard by anyone else on the channel.

• Group Call

- One user can call a select group of users. All

parties in the group hear each other and cannot be heard

by anyone outside the designated group who may be on the

same channel.

• All Call

- One-way voice transmit from one user to all users on

a channel.

• Late Entry

- While an individual or group call is in progress,

latecomers are joined into the call.

Text Messaging

- Digital enables sending/receiving free-form or

preset text messages. Users have more ways to stay connected

when voice communication is not feasible or messages need to

be stored for reference.

Privacy

- No extra encryption hardware is required to ensure

private communications when operating in digital mode.

Only the intended recipient(s) hear what is transmitted without

the risk of significant loss in voice quality that can be

experienced with analog scrambling.