Motorola TMR 2 Manuel de l'utilisateur - Page 13
Parcourez en ligne ou téléchargez le pdf Manuel de l'utilisateur pour {nom_de_la_catégorie} Motorola TMR 2. Motorola TMR 2 28 pages. Trunked mobile radio
Imprimer la page
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.
Etiquette
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.
11