Motorola TMR 2 Manual do utilizador - Página 13

Procurar online ou descarregar pdf Manual do utilizador para Rádio Motorola TMR 2. Motorola TMR 2 28 páginas. Trunked mobile radio

Failsoft

If the trunking system loses its control channel (channel that transmits

data for system, and not voice) or has certain other failures, it is no longer

able to operate in the trunking mode (normal operations). So instead of

going into a condition that stops all communication, the system enters

Failsoft.

In this state all transmitters (channels) turn on and operate in a

'conventional' repeater mode. The subscriber radios are able to recognize

this state and switch to a predetermined frequency (one of the trunk

system frequencies, but not the control channel frequency) depending on

their selected talkgroup.

For example, if a site is in Failsoft, all users associated with the tower

(i.e. Fire, Police, EHS etc) would end up on a single channel, rather than

diﬀ erent agencies being assigned diﬀ erent channels. Everyone within range

of the tower in failsoft will share this single channel. The radio will attempt

to avoid failsoft mode by ﬁ rst seeking other sites that are working properly.

In most systems several talkgroups will share a frequency. If a particular

failsoft frequency has also failed, the talkgroups assigned to that frequency

will also be oﬀ the air during failsoft.

Radio Communication Techniques

The eﬃ cient use of radio depends greatly on the method of speaking and

articulation of the operator. It is important to speak all words plainly and

clearly in order to prevent the running-together of consecutive words.

Avoid any tendency to shout, accent syllables, or speak too rapidly. The

following techniques should be kept in mind when using a radio:

Keep the rate of speech constant, neither too fast nor too slow.

Speed:

Remember that the operator receiving your message may have to write it

down.

Preserve the rhythm of ordinary conversation. Avoid the

Rhythm:

introduction of unnecessary sounds such as 'er' an 'um' between words.

To have words repeated for message conﬁ rmation or clarity use the

command "words twice" or, upon request, ask the speaker to repeat the

message using the phonetic alphabet.