chap 5

Question 1

decoder

Answer 1

process of how intended information is interpretated

Question 2

encoded

Answer 2

process of how info is organized through channel

Question 3

half duplex

Answer 3

allows frequency to flow in 2 or more directions but not at the same time

Question 4

trunked radio system

Answer 4

a sophisticated computer controlled radio system with multiple frequncies and repeaters

Question 5

land mobile radio

Answer 5

encrypted radio used by most public services, operate in high frequency, ultra high frequency and 800MHZ bands

Question 6

VHF low band

Answer 6

greatest distance, follow curvature of earth and can be blocked by physical items

Question 7

VHF high bands

Answer 7

medium coverage, travel in straight lines and are generally used in rural areas

Question 8

UHF bands

Answer 8

bounces off building and is least affected by noise but doesnt have great range, used in metropolitan areas

Question 9

SAFECOM program

Answer 9

provides research testing, devolopment and guidance on interoperable channels

Question 10

P25

Answer 10

always people from different agencies to communicate easily

Question 11

base station radio

Answer 11

fixed location with most powerful transmitter

Question 12

portable transceivers

Answer 12

handheld radio and have lower power, made for working away from the truck

Question 13

mobile transceivers

Answer 13

vehicle and aircraft, 10-15 miles

Question 14

repeaters

Answer 14

long range transceiver made to extend or strenghten the signal of handheld or vehicle radios

Question 14

repeaters

Answer 14

long range transceiver made to extend or strengthen the signal of handheld or vehicle radios

Question 15

CTCSS

Answer 15

encodes the radio signal always only radios with the proper toe to get the transmission

Question 16

simplex mode

Answer 16

same frequency and data transmits in one direction

Question 17

half duplex mode

Answer 17

each end of the transmission transfers in turn

Question 18

multiplex mode

Answer 18

multiple streams on one signal, ambulance to hospital

Question 19

sat receivers

Answer 19

low power units, picks the best frequency to talk on,

Question 20

digital modes

Answer 20

wireless paging or alerting system, can be displayed or printed

Question 21

computer

Answer 21

documents in real time, sorting info in many categories, creation of multiple repeating forms, quick online retrieval

Question 22

5 phases of comm.

Answer 22

occurrence of event
detection of need of EMS
notify and EMS response
arrival of ems
prep for next response

Question 23

vehicle telemetry

Answer 23

provides advanced crash notification,

Question 24

model of communication

Answer 24

help- comm center- ems crew- patient/hospital/ medical direction

Question 25

four barriers of comm

Answer 25

attributes of receiver
selective perception
sematic issues
time pressures

Question 26

succesful ems dispatch

Answer 26

recieve and process calls
dispatch and coordinate response
relay medical info
coordinate with public safety

Question 27

dispatcher training

Answer 27

use locally approved medical dispatch cards
quickly and properly determine nature of call
determine priority
dispatch the right response
provide caller with instructions to help the patient