Harris M7300 User Manual
ECP-3406
M7300 Scan Model
Mobile Radio
User’s Guide
for Orleans County, NY
Training Session Notes
Trunked Radio System
ECP-3406 page 3
Project 25
Interoperable digital radio system standard
Intended for all public safety LMR bands
(VHF, UHF, and 800 MHz)
Developed Jointly by:
TIA
Association of Public-Safety Communications Officials (APCO)
National Association of State Telecommunications Directors
(NASTD)
Various agencies of the Federal government (FED) in the early
90’s to improve spectral efficiencies
TIA/EIA Standard in 1999. Under TIA/EIA-102
ECP-3406 page 4
Project 25 Benefits
Key benefits sought by the user community:
– Competitive procurement of equipment
– Interoperability of equipment
– Spectrum efficiency
– User-friendly operation equivalent to today's public
safety equipment and common across all bands,
system configurations, services, and
manufacturers
ECP-3406 page 5
* SAFETY ITEMS *
DO NOT...operate the mobile radio when someone is outside the vehicle
within two feet of the antenna. This is a recommendation from OSHA
that applies to any type of radio transmitter such as a cellular
telephone, CB radio, our old radio system, or our new radios.
DO NOT...operate the mobile radio if any of the antenna connectors are
loose. This is a basic safety precaution. If the antenna cable or
connectors are loose, please place a service call for repair.
DO NOT...operate the mobile radio near or in an area where blasting is
taking place. Anyone using radio controlled explosives must post
signs. If you see a caution sign about blasting in the area, you must
turn your radio off. This applies to any radio equipment capable of
transmitting: phones, CBs, etc.
DO NOT...operate the mobile radio in an explosive atmosphere. The
radio is an electrical device with switches that can cause an explosion
in an explosive atmosphere. If you can operate your vehicle or any
power tools, it is safe to use the radio.
ECP-3406 page 6
Operating Rules and Regulations
The Federal Communications Commission sets all rules for two-
way radio use. All users of two-way radio equipment should be
familiar with these basic rule requirements.
It is a violation of FCC rules to interrupt any distress or
emergency message
Any use of profane or obscene language is prohibited
It is against the law to send false call letters or a false distress
or emergency message
All messages must be brief and limited to the business need
It is a violation of FCC rules to send personal messages,
unless in an emergency
The FCC requires that radio systems be identified by use of
the assigned Call Letters – the radio system does this
automatically
ECP-3406 page 7
Conventional vs. Trunked
Computerized Assignment of Channels
Service Employee
Customer
Conventional
Trunked
Service Counter
Service Counter
ECP-3406 page 8
Why Trunking?
Improves spectral efficiency
Relieves the user from managing the channel
Encourages cross agency / shared communications
Establishes communications privacy
Encourages private communications
Discourages eavesdropping by scanners
Establishes “queuing” rather than “waiting”
Enables priority use during busy times
Trunking:
ECP-3406 page 9
Trunked Radio System Features
Digital Control Channel
Multiple Working Channels
< 0.5 Second Access
Group & Individual Voice Calls
Logical ID (LID) for each radio
Late / Delayed Entry
Emergency Calls
Queuing with Priority
Unit Enable / Disable
Wide Area Coverage
ECP-3406 page 10
???
Communication Range
Many factors affect range:
Site Location
Urban Clutter
Reflections / Multipath
Ducting over Water
Heavy vegetation
Weather
Frequency
ECP-3406 page 11
Multisite - What the Radios Do
Units inform the System of their location:
Each time the Radio is powered up
Each time a System selection is made
Each time a Group selection is made
When Radio detects a high bit error rate on the Control Channel,
Radio will look for another site (algorithm programmed in radio),
Automatically switches to new site when criteria met
Site 1
Site 2
ECP-3406 page 13
M7300 Scan Model Operation
ECP-3406 page 14
Control Head Functions
OPTION
Key
MENU
Key
On/Off
& Volume
Control
Knob
Group
Select
Knob
Microphone
Connection
CLEAR
Key
Ramp
Control
Scan
Key
Scroll
Control
Emergency
Button
Programmable
Soft Keys
Display
Area
TX & BSY
Indicators
ECP-3406 page 15
Display Information
Volume Bars
indicates relative
volume level
Line 1
Line 2
Mode
Icon *
Channel
Guard
Icon
Encryption
Icon
P25
A or D
Scan On
Icon
rotates
Scan
Priority
Icon
III, II, or I
If you are attached to a P-25 system, the P25 icon will appear
If you are attached to an analog system, an A icon will appear
If you are attached to a digital system, a D icon will appear
Mode Icon Information
*
see next page
for display
messages
VOL
P
25
III
SYSTEM
TALK GROUP
VOL = 1-40
Volume Level
only visible as
volume level is
being adjusted
ECP-3406 page 16
Current Talk Group Name (example: TALK GROUP)
System Busy (SYS BUSY)
Call Denied (DENIED)
Individual Call (*INDV*)
Control Channel Scan (CC SCAN)
Wide Area Scan (WA SCAN)
Receive Emergency (*RX EMER*)
Transmit Emergency (*TX EMER*)
Current System Name (example: SYSTEM)
Volume Level (VOL = 10)
Caller Identification (GR 1234)
Call Queued (QUEUED)
‘Who Has Called’ (* WHC *)
Displayed Messages
• LINE 1:
• LINE 2:
• LINE 3:
Volume Level (VOL = 30)
Range: OFF (minimum) – 40 (maximum)
Line 3 only visible while adjustment is being made
ECP-3406 page 17
Desk Top
Microphone
M7300 Desk Top Station
Speaker
Remote Control
Panel
Microphone
Jack
M7300 Scan
Model Radio
Volume
Control
Station Power
Switch
(on back)
Power
Indicator
ECP-3406 page 18
Alert Tones
Call Originate short mid-pitched beep (“beep”)
Autokey short mid-pitched beep sounding after queued
and an open channel is gained (“beep”)
Call Queued high-pitched tone (“beep”) sounded when the
system places the call request in a queue
System Busy three low-pitched tones (“dut-dut-dut”), only with
I-Calls
Call Denied low-pitched tone (“bomp”) sounded when the
radio is not authorized on the selected system
Timing Out five short high-pitched warning tones (“beep..”)
followed by a low-pitched tone (“bomp”)
Key Press Alert short tone “beep”= access; low-pitched
“bomp”= denial
Missed I-Call telephone ring sounded when an incoming
individual call is not answered
ECP-3406 page 20
Basic Radio Operation
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