Ritron Jobcom JBS-146M User manual

Page 1
JBS-146M_UserMan.pdf
TYPE OF EXHIBIT:
INSTALLATION AND OPERATING INSTRUCTION MANUAL
FCC PART:
2.1033 (c)(3)
MANUFACTURER:
RITRON, INC.
MODELS:
JBS-146M
TYPE OF UNIT:
VHF-FM 2-Way Desk Top Radio
FCC ID:
AIERIT37-146M
DATE:
March 21, 2014
Included in this exhibit is a draft copy of the User Manual for RITRON Model JBS-146M VHF-FM 2-Way
Desk Top Radio.
This manual provides the end user with installation and operating instructions.
SIGNED:
Michael A. Pickard - Project Engineer

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MURS Two-Way Base Station Owner’s
Manual
RUGGED, PROFESSIONAL TWO-WAY BASE RADIOS
ALWAYS THERE…ALWAYS READY…ALWAYS ON
SM
5 VHF MURS Table Frequencies for Easy Field Programming
Built-in Quiet Call ®and Digital Quiet Call ®Interference Eliminator
Up to 10 Channel Capability
12 VDC or Wall Outlet 120 VAC Operation
NOAA Weather Channel Feature (VHF only)
Emergency Weather Alert Feature (VHF only)
Easy-to-Hear High Audio Output
Call Tone
“Z” Button - Programmable Soft Key
2-Tone Encode / Decode
DTMF ANl Encoding
Channel Scan
2 Watts of Power

ACCESSORIES
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JBSK-12 RHD-6X
12-Volt Adapter Kit Behind the Ear Headset
RHD-8X
Single Earbud Ram-1545
Magnet-mounted
Dual-band Antenna
RSP-5 RM-7
5-Watt External Speaker Hand Microphone
OPTIONAL REPLACEMENT ACCESSORIES:
TO ORDER CALL 800-USA-I-USA
AFB-1545 ....Molded Flex, Dual-band Replacement Antenna
RAM-I545.....Magnet-mounted, Dual-band Antenna w / BNC
RPS-IB.........Replacement 110 VAC Power Supply
CCL-M .........12 VDC, Cigarette Lighter Adaptor
JBSK-I2.......12 VDC, Adaptor Kit
REP-2 ..........Low Profile Earphone
RHD-IX.........Single Ear Headset
RHD-4X........Dual Ear Headset
RHD-6X........Lightweight Behind-the-head Earset w / In-line PTT
RHD-8X........Lightweight Earbud w / mic and In-line PTT
RSM-3XA.....Remote Speaker Microphone
RM-7............Hand Microphone & Hang-up Bracket
RSP-5 ..........External Speaker w / 5 Watt Audio Capability
JBS-MMK....Mobile Mounting Kit
(Does not include screws to mount bracket to wall or vehicle)
Call RITRON for a complete listing.

TABLE OF CONTENT
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DESCRIPTION PAGE
ACCESSORIES
Optional Accessories............................................ii
INTRODUCTION
“Display Series” Model Numbers..........................1
Basic Features.....................................................1
2013 FCC Narrowband Mandate..........................2
CONTROL & OPERATION..................................3
FIG-1: Radio Controls and Connectors.................3
OPERATION
FIG-2: Volume Level Indicator..............................4
ON-OFF / Volume Adjust .....................................4
Channel Selection................................................4
Receive...............................................................4
QC and DQC Tone Codes
(Interference Eliminator Codes)............................5
Squelch Modes....................................................5
Transmit ..............................................................5
FIG-3: Transmit Busy Lamp.................................5
Radio Alert Tones................................................6
Optional Alert Tones............................................6
Channel Scan Operation......................................7
2-Tone Decode Operation....................................8
FIG-4: 2-Tone Call Alert.......................................8
“Z” Button - Programmable Soft Key ....................9
NOAA WEATHER RADIO FEATURE
How to Select Your Local NOAA Weather
Frequency .........................................................10
NOAA Weather Feature..................................... 10
FIG-5: Selecting Your Local NOAA Weather
Frequency .........................................................11
DESCRIPTION PAGE
FIG-6: NOAA Frequencies .................................11
NOAA Weather Alert Feature............................ 11
Using the “Z” Button to Access NOAA Weather ..11
RADIO PROGRAMMING
FIG-7: How to Place the Radio in Program /
Readout Mode ...................................................12
How to Readout Field Programmed
Frequency & Tone Codes...................................12
How to Field Program Frequency and
Tone Codes.......................................................13
Table 1: Programmable Frequency Codes..........14
Table 2: Programmable QC Tone Codes............15
Table 3: Programmable DQC Codes ..................15
How to Field Program Radio Feature Codes.......15
Table 4: Radio Feature Codes............................15
How to Delete a Channel....................................16
PC Programmable Features...............................16
!! CAUTIONS —ALL RADIOS!!
Observe Caution in the Following Environments
to Maximize the Life of Your Radio Equipment....17
Exposure to Radio Frequency Energy ................17
TROUBLESHOOTING.......................................18
SPECIAL APPLICATION
How to Field Program 2-Tone Encode Codes.....19
for GateGuard Applications, go to
www.ritron.com/pdf/gg_07.pdf
How to Send a 2-Tone Code..............................19
TABLE 5: Programmable 2-Tone Encode Code..19
DESCRIPTION PAGE
FCC & IC LICENSE REQUIRED
Licensing............................................................20
Safety Standards................................................20
How to Obtain an FCC Radio License.................20
Industry Canada Regulations..............................20
Service...............................................................20
LIMITED WARRANTY ......................................21
ADDENDUM TO MANUAL
JBS-146D-A and JBS-446D-A Instructions
Auto Turn On When Power Restored..................22
FIGURES:
1. Radio Controls and Connectors..................... 3
2. Volume Level indicator.................................. 4
3. Transmit / Busy Lamp ................................... 5
4. 2-Tone Call Alert........................................... 8
5. Selecting Your Local NOAA Weather
Frequency....................................................11
6. NOAA Frequencies ......................................11
7. How to Place the Radio in Program /
Readout Mode ............................................ 12
INSPECTION
Make sure the package includes:
“Display Series” base radio
Antenna
RPS-1B Wall Mounted Power Supply
Examine the equipment immediately
after delivery and report any damage to
your shipping company.

INTRODUCTION
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THANK YOU FOR CHOOSING RITRON
Congratulations on your purchase of the MURS base station.
Your new radio is the result of Ritron’s more than 30 years
history of designing, manufacturing, and supplying reliable,
professional wireless communication products. Ritron wireless
products will improve the operation, safety, and profitability of
any organization by providing instant voice communications
between employees throughout the workplace.
MURS MODEL NUMBERS
JBS-146M (Jobcom) (2-W, 10 Ch)
JBS-146M-A (Jobcom) (2-W, 10 Ch)
MURS VHF radios are designed to operate exclusively on the 5
MURS channel frequencies of 151.820, 151.880, 151.940,
154.570, and 154.600 MHz. There are no provisions for
programming MURS model radios for any other frequencies.
BASIC FEATURES
This manual covers Ritron JBS MURS model base stations. A
rugged, programmable two-way desktop base station designed
to operate in the FCC Part 95J Multi-Use Radio Service. Each
radio is equipped with these features:
Push-button Operating Controls. The Push-To- Talk (PTT),
Channel, On / Volume Up, Volume Down / Off and the
special feature “Z” button controls are conveniently located
on the face of the radio.
Channel Display. The LED display will show the current
operating channel, and contains a transmit / busy lamp. The
display is also used to indicate volume level and paging decode
status on radios programmed for 2-Tone paging operation.
10-channel Capability. Up to 10 channels can be programmed
to contain a unique set of operating frequencies and options.
QC (Quiet Call) and DQC (Digital Quiet Call) Interference
Eliminator Codes. Each channel can be programmed from a
list of 50 QC sub-audible or 104 DQC digital privacy codes.
Field programming. The MURS base radio allows you to
quickly select and program each channel individually while in
the field without the need for a PC programmer. Each
channel can be programmed to one of 5 VHF MURS channel
table frequencies and one of 50 QC or 104 DQC interference
eliminator codes, or you can delete a channel altogether.
Channel Scanning. Channel Scan allows scanning of all
channels programmed into the radio, and can be turned On
and Off through Field programming. The scan channel has
many features, including Priority Scanning and Busy Channel
Blocking.
Special Feature “Z” button. The “Z” button is capable of
performing one of a variety of functions. These functions can
be PC programmed by your dealer OR certain functions (in
bold) can also be assigned to the “Z” button by the end user.
“Z” button function options: Channel Scan, Weather
Channel, Monitor, Send 2-Tone Code*, Send Call Tone,
Send DTMF ANI (PC programmable by your Ritron dealer).
These features require special PC programming:
See your Ritron dealer or contact Ritron directly for PC
programming of these optional features.
2-Tone Decode. Each channel can be programmed for 2-
Tone paging decode within a frequency range of 300-1500
Hz. Additional 2-tone paging features include Group Call, All
Call, automatic reset, and transpond alert.

INTRODUCTION
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2-Tone Encode. Each channel can be programmed for 2-
Tone paging encode within a frequency range of 300-1500
Hz. (See page 19)
DTMF ANI. Each channel can be programmed to transmit a
unique DTMF ANI string with the “Z” button programmed for
DTMF ANI.
Squelch Adjustment. Squelch sensitivity can be programmed
on a per channel basis to meet your specific needs.
Alert Tones. Each channel is programmable for a variety of
alert tones that include RX courtesy beep, TX clear to talk
beep, busy channel lockout alert, last active channel marker,
and channel scanning indicator.
Weather Channel. MURS models can be programmed to
receive your local NOAA weather radio broadcast. The
Weather channel can be turned On and Off through Field
Programming.
Weather Alert. MURS models can be programmed to alert
you when the National Weather Service detects threatening
weather conditions. The Weather Alert feature can be turned
On and Off through Field Programming.

CONTROL & OPERATION
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1 CHANNEL DISPLAY
The channel display will indicate the
current operating channel. When the
Scan Channel is selected the display
will rapidly flash the channels being
scanned, and will stop when a
channel is received. The channel
display also indicates the volume
level between 0-9 whenever a volume
control is pressed.
2 CHANNEL SELECTOR
Press the Channel Selector button
and the radio will advance the
channel. The Channel Beep will be
heard any time Channel 1 is selected.
When the Scan Channel is selected
the radio will sound the Scan Beep
and begin scanning.
3 AUDIO ACCESSORY JACK
The audio accessory jack is used to
plug in earphone options and, in
conjunction with the microphone jack,
to connect an optional remote
speaker / microphone or a single-ear
or dual-ear headset. This jack is also
used for PC programming.
4 MICROPHONE JACK
The microphone jack is used to
connect optional external
microphones and, in conjunction with
the audio accessory jack, to connect
an optional remote speaker /
microphone, or a single-ear or dual-
ear headset.
5 SPEAKER
The speaker allows you to hear calls
on your channel.
FIG-1: RADIO CONTROLS & CONNECTORS
6 POWER CONNECTOR (TOP END OF CASE)
The power connector on the top end of the radio is used
to connect power to the unit, either an external 12 VDC
supply or the RPS-1B cube power supply included with
the radio.
7 ANTENNA
The flexible antenna radiates and receives radio signals.
The antenna connects to a BNC type connector located
on the top end of the radio.
NOTE: The AFB-1545 antenna furnished with the radio
will work with VHF and UHF radios.
8 PUSH-TO-TALK SWITCH (PTT)
Press and hold the PTT when transmitting; release it to
receive.
9 “Z” BUTTON - PROGRAMMABLE
SOFT KEY
The “Z” button is capable of
performing one of a variety of
functions. These functions can be PC
programmed by your Ritron dealer
OR certain functions can be assigned
to the “Z” button by the end user.
Function options: Channel Scan,
Weather Channel, Monitor, Send 2-
Tone Code, Send Call Tone, Send
DTMF ANI (PC programmable by
your Ritron dealer).
10 VOLUME DOWN / OFF
Press the Volume Down / Off button
to decrease volume. The channel
display will indicate the volume level
as long as the Volume Down / Off
button is pressed. To turn Off the unit,
press and hold this button until the
speaker sounds a double beep.
11 ON / VOLUME UP
To turn the unit On, press the On /
Volume Up button; the speaker will
sound the Channel Beep. If the radio
turns on to the Scan Channel it will
sound the Scan Beep. Once the radio
is On, press this button to increase
volume. The channel display will
indicate the volume level as long as
the On / Volume Up button is
pressed.
12 MICROPHONE
The microphone allows your voice to
be heard in transmissions to other
radios. Speak in a normal tone;
shouting does not improve your
listeners’ reception.
1
2
3
4
5
6
7
8
9
10
11
12

OPERATION
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As long as the Volume Up button is held down the
volume will increase and the display will indicate the
volume level as number between 0 and 9.
When the Volume Down button is held down the
volume will decrease and the display will indicate the
volume level as a number between 9 and 0.
FIG-2: VOLUME LEVEL INDICATOR
ON-OFF VOLUME ADJUST
To turn on the radio - press the On / Volume Up button. The
radio will sound the Channel Beep. If the radio turns on to the
Scan Channel it will emit the Scan Beep. The radio will turn on to
the channel that was selected when it was last turned off.
NOTE: JBS-146M-A turns on automatically any time power is
applied to the radio.
To adjust the volume - press the volume up or the volume down
button until you reach the desired level. The display will show the
volume level on a 0-9 scale as long as the volume button is
pressed, and you will hear any received broadcasts on the
channel.
To turn off the radio - press and hold the Off / Volume Down
button until a two tone “turn-off” beep is heard. For instant turn-
off, press the PTT button while holding the Off / Volume Down
button.
CHANNEL SELECTION
To change channels - press and release the Channel Selector
button. The radio will increment the channel, and the Channel
Display will show the new operating channel. If the highest
channel number is selected and you press the Channel Selector
button, the radio resets to channel 1 and the Channel Beep is
heard on the speaker.
If the Scan Channel is selected - the radio will sound the Scan
Beep and the Channel Display will rapidly flash the channel
numbers as they are scanned. If a signal is received the channel
display will indicate the channel number, and when the received
signal is removed the radio will wait briefly, sound the Scan
Beep, then scanning will resume as normal.
If the Weather Channel is selected - the display will light a single
segment of the display that indicates which of the seven NOAA
frequencies is monitored. See the “NOAA Weather Radio
Feature” section on page 10 for details.
RECEIVE
To hear calls from other users - adjust the volume as desired.
The radio can only receive broadcasts while the Push-To-Talk
button is not being pressed. Whether or not you hear these
broadcasts depends upon the squelch settings.
There are three standard squelch modes that can be used in the
JBS MURS base station.
Carrier Squelch lets you hear all broadcasts on your channel
strong enough for the radio to detect, and silences noise.
Tone Squelch uses the QC or DQC “tone squelch” format
available on the JBS-146M. This allows you to screen out
“on-channel” broadcasts that do not carry the correct code
programmed for the radio.
2-Tone Paging can be used in conjunction with either
carrier or tone squelch to block out all calls except those
sent specifically to your radio. When the unique 2-tone
sequence programmed into the radio is decoded, the radio
will emit a series of ring tones similar to a telephone.

OPERATION
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When Carrier or Tone Squelch is selected by the user, all
channels will operate in that mode. The JBS MURS base station
will operate in tone squelch mode when it is first turned on.
QC AND DQC TONE CODES
Tone codes filter out static, noise and reduce unwanted “chatter”
on radio channels. When you operate on a frequency with a tone
code, you screen out most interference. This allows you to
communicate with less interference and to hear only those users
in your radio group.
IMPORTANT! All radios in the talk group must operate on the
same frequency and tone code.
SQUELCH MODES
To activate Tone Squelch or Carrier Squelch and to Monitor the
channel - you may either simultaneously press both the On /
Volume Up and Volume Down / Off volume buttons and hold
briefly before releasing, or if the “Z” button is set for the monitor
function (see page 15), then press the “Z” button and release. To
advance to the next squelch mode simultaneously press both
volume buttons, or press the “Z” button.
1. If the base station emits a SINGLE beep, then Tone Squelch
is turned ON and you will only hear radio transmissions on
that channel with the same QC or DQC tone codes as your
base station.
2. If the base station emits a DOUBLE beep, then you are in
Carrier Squelch and you can Monitor all broadcasts on the
channel. To exit Carrier Squelch press and hold both
volume buttons until you hear the SINGLE beep.
3. If the base station emits a TRIPLE beep, then you are in 2-
TONE DECODE. You will only hear broadcasts that first send
your two unique paging tones. If you are unable to set the
base station, you have selected a channel that is not
programmed for 2-Tone Decode.
If you are unable to activate Carrier Squelch - the base station
has been programmed for Monitor Lockout. See your Ritron
dealer or contact Ritron directly to disable this option.
Using the “Z” button for Monitor - the JBS MURS base station “Z”
button can be programmed for Monitor mode.
To use the “Z” button for Monitor see ‘How to Field Program
Radio Feature Codes” on page 15.
Note: It is possible that the beginning of a call might be missed
while the base station is in battery saver mode. If this
happens, ask the caller to repeat the message.
TRANSMIT
Normally, you should monitor the channel before transmitting
and talk only when the channel is clear.
To transmit - hold down the Push-To-Talk button and, with the
radio at least 6 inches away, talk into the microphone. Speak in a
normal tone, since talking louder will not improve the listener’s
reception.
Keep talk times as short and infrequent as possible to allow
others to use the channel.
A Transmit / Busy Lamp in the lower right corner of
the Channel Display lights whenever the transmitter
is activated and blinks when the channel is busy.
FIG-3: TRANSMIT / BUSY LAMP

OPERATION
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RADIO ALERT TONES
The base station responds to certain instructions by sounding a
beep or series of tones. These tones can tell you that the radio is
working as you expect.
Power On / Self Check “OK”
When it is first turned on, the base station runs a quick “self test”
to confirm basic functions. When complete the base station will
emit the Channel Beep and the Channel Display will show the
operating channel. The base station is then ready to use.
Error Tones
However, if the “self test” detects a diagnostic error, an error
tone sounds. The error tone indicates the base station frequency
synthesizer is malfunctioning. Turn off the radio and try again.
A long, low-pitched tone means the battery voltage is too low to
operate the base station. If you cannot correct the problem,
consult an authorized Ritron service center or Ritron directly.
Squelch Mode
When you press and hold both Volume buttons at the same time,
a SINGLE beep will sound to indicate that tone squelch is on. A
DOUBLE beep means that carrier squelch is on. If the channel is
programmed for 2-Tone Code, a TRIPLE beep indicates that the
base station is in 2-Tone Decode mode.
Transmitter Time Out
A low tone followed by a higher-pitched tone sounds and the
transmitter automatically shuts off if you hold down the PTT
button longer than 60 seconds.
Battery Alert Tone
In battery powered installations: Once the battery voltage drops
below the required “operating voltage” the radio emits a long, low
tone and turns itself off.
OPTIONAL ALERT TONES
The MURS base station can be programmed using the RITRON
PC Programmer for optional alert tones. See your Ritron dealer
or contact Ritron directly for programming of these options.
Courtesy Beep
A short tone sounds at the end of each received transmission to
indicate that the channel is clear and you may transmit.
Busy Channel TX Inhibit
If a user is transmitting on your radio frequency without your
tone, you will not be allowed to transmit. The base station will
beep a series of long, low tones while the PTT is held down (like
a busy signal).
Transmit Clear to Talk Beep
A short tone sounds after the PTT has been pressed to indicate
that the base station is ready for you to begin talking.

OPERATION
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CHANNEL SCAN OPERATION
Channel scanning allows you to listen to broadcasts on your
radio channels. The JBS MURS base station will scan all
channels programmed into the radio except the NOAA Weather
Channel.
How Scanning Works
Using the Channel Selector button, select the Scan channel. The
base station sounds the Scan Beep, and then repeatedly checks
each channel in the scan list. The channel display will show the
channel numbers as they are scanned.
When receiving a call on a channel being scanned, the base
station will stop scanning to let you hear communications on that
channel. After the transmission has ended the base station will
pause before it resumes scanning to allow you time to respond.
When transmitting from the Scan channel, the base station will
go to the last channel on which a signal was received, and then
transmit. After you release the PTT the base station will pause
to allow time for a response, and then resume scanning.
Temporary Busy Channel Blocking
If one of the channels in the scan list is so busy that you want to
temporarily block it out, press the Channel Selector button while
the base station is stopped on the channel to be blocked and
hold it until scanning resumes. The blocked channel will now be
skipped in the scan list.
The blocked channel will be returned to the scan list if the base
station is turned off and then back on again, or when the radio
channel is changed using the Channel Selector button. The first
channel in the scan list cannot be blocked.
To turn Channel Scan On / Off see “How to Field Program
Radio Feature Codes” on page 15.
Last Channel Scanned Alert Tone
When changing channels with the Channel Selector button, an
alert tone will sound to indicate the last channel that received a
message when the radio was scanning. This will identify the
channel on which the last message was received, and allow
uninterrupted transmission on that channel without the
constraints of scanning. You can then press the Channel
Selector button to return to the scan channel.
Using the “Z” Button for Scan
The special feature “Z” button can be programmed to initiate
scanning.
To select the Scan Channel, press the “Z” button. The radio
sounds the Scan Beep, and scanning operation is initiated. The
Scan channel will not be accessible with the Channel Selector
button when the base station is programmed for ‘Z” button Scan
channel operation.
To return to normal channel operation, press the Channel
Selector button and the base station will return to channel 1.
To temporarily block a busy channel while scanning, press the
“Z” button while the base station is stopped on the channel to be
blocked and hold it until scanning resumes. The blocked channel
will now be skipped in the scan list.
Priority Scanning (Optional)
The MURS base station can be optionally programmed for
priority scanning. Priority Scan allows you to periodically monitor
a Priority Channel, even if the base station has stopped on
another channel. This will prevent missed calls on the primary
operating channel when in scan mode.

OPERATION
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With Priority Scan enabled:
The first channel in the scan list is the Priority Channel.
The radio checks the Priority Channel every two seconds to
check for activity. This time is programmable and can be set
for 1 - 8 seconds.
The base station can be programmed to transmit only on the
Priority Channel when scanning.
The base station can be programmed to sound a Priority
Channel Beep whenever the base station receives on the
Priority Channel when scanning.
See your Ritron dealer or contact Ritron directly for PC
programming of this option.
2-TONE DECODE OPERATION
To use 2-Tone Decode the “Display Series” base station
must be PC programmed for this option, the radio does not
operate with 2-Tone decoding as it is received from the factory.
See your Ritron dealer or contact Ritron directly for PC
programming of this option. This feature allows the base station
to act as a monitor receiver.
To activate 2-Tone Decode you must first select a radio channel
that has been PC programmed for 2-Tone Decode. The factory
default setting will automatically activate 2-Tone Decode any
time the 2-Tone Decode channel is selected. If not,
simultaneously press both of the volume buttons and hold briefly
before releasing. The radio sounds three beeps when 2-Tone
Decode is turned on.
If you are unable to set the base station, you have selected a
channel that is not programmed for 2-Tone Decode.
When the base station decodes an incoming 2-Tone signal it will
emit a “ring’ tone similar to a telephone and the display will show
a “C” to indicate that a call has been received. You can now
proceed with normal two-way communication until the 2-Tone
Decode feature has been reset. The “ring” tone will sound every
time a 2-Tone signal is decoded.
The display will show a “C” to indicate that a 2-Tone call
has been received.
FIG-4: 2-TONE CALL ALERT
To reset 2-Tone Decode after receiving a call: Simultaneously
press both volume buttons and hold briefly before releasing. The
base station sounds three beeps when 2-Tone Decode is reset
and the display will show the channel number. The base station
can be optionally programmed to automatically reset if a call is
not answered within 15 seconds.
2-Tone Decode channels can be programmed to:
Automatically set the base station for 2-Tone Decode mode
whenever the channel is selected.
Automatically reset if a 2-Tone Decode is not answered
within 15 seconds.
Automatically place the receiver into carrier squelch “monitor”
mode whenever a 2-Tone Decode has been decoded.
Send a transpond tone back to the transmitting station to
confirm that the 2-Tone signal has been received.
Decode an All Call tone.
Decode a Group Call if the first tone is sent for an extended
period of time.

OPERATION
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“Z” BUTTON - PROGRAMMABLE SOFT KEY
The “Z” button is capable performing one of a variety of
functions. These functions can be PC programmed by your
dealer OR certain functions can also be assigned to the “Z”
button by the end user. Function options: Channel Scan,
Weather Channel, Monitor, Send 2-Tone Code, Send Call Tone,
Send DTMF ANI (PC programmable by your Ritron dealer).
Refer to the Dealer PC programmer HELP file for specific “Z”
button programming instructions.
To assign the “Z” Button for one of these features:
Scan Weather Monitor
Call Tone Pre-set 2-Tone Encode
see “How to Field Program Radio Feature Codes” on page 15.
SCAN
The “Z” button can be programmed to initiate channel scanning.
See “Using the “Z” Button for Scan” on page 7.
WEATHER
The “Z” button on the MURS base stations are programmed for
Weather Channel operation from the factory.
See “Using the “Z” Button for Weather Channel” on page 11.
MONITOR
The “Z” button can be programmed to function as a MONITOR
button. See page 15 to select this option.
See “Squelch Modes” to Set Carrier, Tone, or 2-Tone Paging
Functions on page 5.
CALL TONE
When the “Z” button is pressed the radio transmits a Call Tone
on the channel currently selected. If you continue to hold the “Z’
button down, the transmitter will remain active and voice
communications can be made after the Call Tone has been sent.
This feature is helpful when the receiving base station is in a
high noise environment and may not hear a voice transmission.
2-TONE ENCODE OPERATION
Pressing the “Z” button causes the base station to transmit a
unique 2-Tone Code that can be programmed separately for
each channel. The 2-Tone Code will be heard on the speaker,
and if you continue to hold the “Z” button down, the transmitter
will remain active and voice communications will be possible
after the 2-Tone Code has been sent.
Use the PTT button to transmit messages without the 2-Tone
Code.
If a channel is not programmed to encode a 2-Tone signal the
“Z” button will function as a PTT button.
See Special Application for Field Programming the 9 Pre-set
2-Tone Codes on page 19.
DTMF ANI ON TRANSMIT
This feature must be PC Programmed by your Ritron dealer.
Pressing the “Z” button causes the radio to transmit a unique
DTMF ANI string that can be programmed separately for each
channel. The DTMF string will be heard on the speaker, and if
you continue to hold the “Z” button down, the transmitter will
remain active and voice communications will be possible after
the DTMF ANI string has been sent.

NOAA WEATHER RADIO FEATURE
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HOW TO SELECT YOUR LOCAL NOAA WEATHER FREQUENCY
The base station is shipped from the factory without a NOAA frequency selected. You must first
select your local NOAA frequency to activate NOAA weather features. Follow steps 1-7 below.
The JBS MURS base station can hear weather forecasts from the National Weather Service which
are broadcast on one of the seven NOAA weather frequencies. In some areas you may be able to
receive more than one broadcast.
1. Follow the steps in FIG-5 on page 11 to place the radio into the Weather Frequency Select mode.
2. The base station will scan to the first NOAA frequency where a broadcast is present. The
display will light a single segment to indicate the NOAA frequency per FIG-6 on page 11.
3. Monitor the channel for a few minutes to be sure it is the broadcast for your local area.
4. Press the “Z” button to scan for the presence of any other NOAA broadcasts, monitoring each
broadcast and noting the frequency as indicated by the display.
5. Using the “Z” button, select the local NOAA frequency you would like your radio to operate on.
6. Turn the base station off by pressing the Volume Down / Off button.
7. When the base station is turned back on all weather features will operate on the selected
NOAA frequency.
NOTE: If the base station is moved, for example, to another state you must re-train your base
station with a new local NOAA frequency.
NOAA Weather Radio (NWR) is a nationwide network of radio stations broadcasting continuous weather information direct
from a nearby National Weather Service office. NWR broadcasts National Weather Service warnings, watches, forecasts
and other hazard information 24 hours a day.
Working with the Federal Communication Commission’s (FCC) Emergency Alert System, NWR is an “all hazards” radio
network, making it your single source for comprehensive weather and emergency information. NWR also broadcasts
warning and post-event information for all types of hazards—both natural (such as earthquakes and volcano activity) and
environmental (such as chemical releases or oil spills).
Known as the “Voice of the National Weather Service,” NWR is provided as a public service by the National Oceanic & Atmospheric Administration
(NOAA), part of the Department of Commerce. NWR includes more than 750 transmitters, covering all 50 states, adjacent coastal waters, Puerto
Rico, the U.S. Virgin Islands, and the U.S. Pacific Territories. NWR requires a special radio receiver or scanner capable of picking up the signal.
Broadcasts are found in the public service band at these seven frequencies (MHz): 162.400, 162.425, 162.450, 162.475, 162.500, 162.525, 162.550.
NOAA WEATHER FEATURE
After you have selected a NOAA weather
frequency on your VHF model base
station, an extra channel is automatically
created exclusively for listening to
National Weather Service broadcasts.
Repeatedly pressing the Channel button
will advance through your base station
talk channels. NOAA Weather will be
your last channel, and the display will
light the segment representing the
selected NOAA frequency.
If you do not want the NOAA Weather
feature, it can be turned off through Field
Programming.
To turn NOAA Weather Feature On /
Off see “How to Program Radio
Feature Codes” on page 15.

NOAA WEATHER RADIO FEATURE
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NOAA WEATHER ALERT FEATURE
Once a NOAA weather frequency has been selected on your JBS MURS base station it will
listen for emergency broadcasts from the National Weather Service, regardless of which
channel you are on.
An alert tone will sound in the speaker, the display will show an “A” (as shown),
and the National Weather Service emergency broadcast will be heard - advising
you of threatening weather conditions.
NOTE: NOAA sends a test alert tone once each week. Your base station will
respond to this alert.
To turn Weather NOAA Alert On / Off see “How To Field Program Radio Feature
Codes” on page 15.
Pressing the Channel button will return you to your normal talk channel.
If you do not want the NOAA Weather Alert feature, it can be turned off through Field
Programming, refer to page 15.
USING THE “Z” BUTTON TO ACCESS NOAA WEATHER
The JBS MURS base stations are programmed for “Z” button NOAA Weather operation
from the factory.
To select NOAA Weather, press the “Z” button. The base station will scan to the 1st
NOAA frequency where a broadcast is present. The display will light a single segment
to indicate the NOAA frequency per FIG-6. If the base station has been pre-set for your
local NOAA weather frequency, the base station will go directly to that frequency when
the “Z” button is 1st pressed.
With any subsequent press of the “Z” button the base station will scan to the next active
NOAA frequency.
When the “Z” button is programmed to access NOAA Weather, the feature will no
longer be accessible with the Channel Selector button.
To return to a normal talk channel operation, press the Channel Selector button. The
base station will return to the last talk channel you operated on.
1. Press & hold the
Volume Down / Off
button until the
“Radio Off”tones are
heard, then release.
2. Press & hold the
“Z” button.
3. Press & release the
On / Volume Up
button –the radio
will start beeping.
4. Continue holding the
“Z” button until the
beeping stops, then
release it and listen.
5. To find the next active
Weather Channel,
press and release the
“Z” button.
FIG-5: SELECTING YOUR LOCAL
NOAA WEATHER FREQUENCY
162.450 MHz
162.475 MHz 162.425 MHz
162.400 MHz
162.500 MHz 162.550 MHz
162.525 MHz
FIG-6: NOAA FREQUENCIES

RADIO PROGRAMMING
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HOW TO READOUT FIELD PROGRAMMABLE FREQUENCY & TONE CODES
In our example, channel 3 of a JBS MURS radio is programmed to operate on the “Green Dot”
frequency of 154.600 MHz (Frequency code “01”) with 100.0 Hz tone (Tone code “12”).
1. Place the radio into Program / Readout Mode by following the instructions
in FIG-7 at left. A “P” will appear on the LED display as you enter program
mode.
2. Release the Push-to-talk button after the beeping has stopped. The radio
will display a series of six characters for Radio Identification, with each
character separated by a hyphen. The 1st two characters indicate the
model number, the 3rd and 4th characters indicate the radio type, and
the 5th and 6th characters indicate the firmware revision.
In this example: Model: 27
Radio Type: 31
Firmware Revision: 04
NOTE: Radio models with firmware revisions prior to 16.01 do not
display the Radio Identification sequence.
3. After the Radio Identification has been displayed the digit 1 will appear,
followed by a hyphen, and the radio will emit a triple beep indicating that
the radio is in program mode and channel 1 is selected.
4. Press the Channel Selector button to select the channel to be read out.
The channel number will appear briefly on the display as you step through
the channels. When you have settled on a channel a hyphen will appear
across the center of the display to indicate that it is ready for readout.
5. Press and release the On / Volume Up button. The radio will begin to
display a series of four digits; with each digit separated by a hyphen.
The 1st and 2nd digits indicate frequency code; see Table 1 on page 14.
The 3rd and 4th digits indicate the tone code; see Table 2 on page 15.
If a 5th digit is displayed, the channel has been programmed for DQC and
the last three digits indicate the DQC code; see Table 3 on page 15.
If more than 5 digits are displayed refer to page 19.
6. If the frequency code entered is not listed in Table 1 on page 14, an
error tone will sound and an “E” will appear on the display.
7. To readout another channel, repeat steps 4 through 6.
8. Turn the radio OFF and then ON again—the radio is now ready to use.
1. Press & hold the
Volume Down / Off
button until the
“Radio Off”tones are
heard, then release.
2. Press & hold
the Push-to-
Talk button.
3. Press & release
the On / Volume
Up button –the
radio will start
beeping.
4. Continue holding the
Push-to-Talk button
until the beeping stops,
then release it and
listen.
5. The radio will emit a
triple tone: It is now in
Program / Readout
Mode.
FIG-7: HOW TO PLACE THE RADIO IN
PROGRAM / READOUT MODE
IMPORTANT
To talk to other users in your group, all
radios must be set to the same frequency
and Interference Eliminator codes.

RADIO PROGRAMMING
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HOW TO FIELD PROGRAM FREQUENCY & TONE CODES
To match other radios, the owner can select Frequency and Tone Codes from
Tables 1, 2, and 3 on pages 14 and 15.
In our example we will program channel 3 of a JBS MURS radio to operate on the
“Green Dot” frequency of 154.600 MHz (Frequency code “01”) with 100.0 Hz tone
(Tone code “12”).
1. Refer to Table 1 on page 14 to determine the two digit
frequency code and write it down.
2. Refer to Table 2 on page 15 to determine the two digit
tone code for 100.0 Hz and write it down.
3. Place the radio into Program / Readout Mode by
following the instructions in FIG-7 on page 12. A “P” will
appear on the LED display as you enter program mode.
4. Release the Push-to-talk button after the beeping has
stopped. The radio will display a series of six characters
for Radio Identification, with each character separated
by a hyphen. The 1st two characters indicate the model
number, the 3rd and 4th characters indicate the radio
type, and the 5th and 6th characters indicate the
firmware revision.
In this example: Model: 27
Radio Type: 31
Firmware Revision: 04
NOTE: Radio models with firmware revisions prior to
16.01 do not display the Radio Identification sequence.
5. After the Radio Identification has been displayed the
digit 1 will appear, followed by a hyphen, and the radio
will emit a triple beep indicating that the radio is in
program mode and channel 1 is selected.
6. Press the Channel Selector button to select the channel
to be programmed. The channel number will show
briefly on the channel display as you step through the
channels. When you have settled on a channel the
display will show a hyphen to indicate that it is ready for
programming.
7. Enter the 1st digit of the frequency code by clicking the PTT button
until the channel display shows the desired number. Pause - the
radio will sound a low tone and show a hyphen across the center of
the display to indicate that it is ready to accept the next digit.
8. Enter the 2nd digit of the frequency code by clicking the PTT button
until the channel display shows the desired number. Pause - the
radio will sound a low tone and show a hyphen across the center of
the display to indicate that it is ready to accept the next digit
9. Enter the 1st digit of the tone code (or 1st digit of the DQC code) by
clicking the PTT button until the channel display shows the desired
number. Pause - the radio will sound a low tone and show a hyphen
on the display to indicate that it is ready to accept the next digit.
10. Enter the 2nd digit of the tone code (or 2nd digit of the DQC code)
by clicking the PTT button until the channel display shows the
desired number. Pause - the radio will sound a low tone and show a
hyphen on the display to indicate that it is ready to accept the next
digit.
11. FOR DQC CODES ONLY - Enter the 3rd digit of the DQC code by
clicking the PTT button until the channel display shows the desired
number. Pause - the radio will sound a low tone and show a hyphen
on the display to indicate that it is ready to accept the next digit.
12. Press and release the On / Volume Up to SAVE your programming
entry. The LED display will briefly show the channel number you
have just programmed and the radio will sound a triple beep to
indicate that programming was successful.
NOTE: An error tone will sound if you attempt to save an incorrect
code and an “E” will appear on the display. Turn the radio OFF,
check the digits you are attempting to enter, then start over.
13. To program another channel, repeat steps 6 through 12.
14. Turn the radio OFF and then ON again—the radio is now ready to
use.
NOTES:
a. YOU MUST enter “44” to enter “No Code” interference eliminator to match
radios not having tone codes. Refer to Table 2 on page 15.
b. If the radio does not sound a confirming triple tone when you attempt to enter
Program / Readout Mode, the radio was factory or dealer customized to
disable programming. Consult the radio owner or your dealer.
04
12

RADIO PROGRAMMING
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TABLE 1: PROGRAMMABLE FREQUENCY CODES
VHF MURS **
Code Color Band
No. MHz Dot Width
01 154.6000 Green Dot 25.0
02 154.5700 Blue Dot 25.0
19 151.8200 MURS 12.5
20 151.8800 MURS 12.5
21 151.9400 MURS 12.5
22 154.6000 MURS/Green 12.5
23 154.5700 MURS/Blue 12.5
00 DELETE Code*
Per FCC rules and regulations, a
given radio cannot be programmed
to contain a mix of both VHF
Business Band and VHF MURS
frequencies.
** MURS frequencies –The 5 MURS
frequencies do not require an FCC
license.
*2-digit Frequency placeholder code
(Refer to “How to Delete a
Channel” on page 16)

RADIO PROGRAMMING
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TABLE 2: INTERFERENCE ELIMINATOR
PROGRAMMABLE QC TONE
Code
Hz
Code
Hz
Code
Hz
01
67.0
18
123.0
35
225.7
02
71.9
19
127.3
36
233.6
03
74.4
20
131.8
37
241.8
04
77.0
21
136.5
38
250.3
05
79.7
22
141.3
39
69.4
06
82.5
23
146.2
40
159.8
07
85.4
24
151.4
41
165.5
08
88.5
25
156.7
42
171.3
09
91.5
26
162.2
43
177.3
10
94.8
27
167.9
44 No Tone
11
97.4
28
173.8
45
183.5
12
100.0
29
179.9
46
189.9
13
103.5
30
186.2
47
196.6
14
107.2
31
192.8
48
199.5
15
110.9
32
203.5
49
206.5
16
114.8
33
210.7
50
229.1
17
118.8
34
218.1
51
254.1
00
Delete
TABLE 3: DIGITAL INTERFERENCE ELIMINATOR
PROGRAMMABLE DQC TONE
CODE NUMBERS
023
072
152
244
311
412
466
632
025
073
155
245
315
413
503
645
026
074
156
246
325
423
506
654
031
114
162
251
331
431
516
662
032
115
165
252
332
432
523
664
036
116
172
255
343
445
532
703
043
122
174
261
346
446
546
712
047
125
205
263
351
452
565
723
051
131
212
265
356
454
606
731
053
132
223
266
364
455
612
732
054
134
225
271
365
462
624
734
065
143
226
274
371
464
627
743
071
145
243
306
411
465
631
754
HOW TO FIELD PROGRAM RADIO FEATURE CODES
1. Follow the instructions in FIG-7 on page 12 to place the base station in the Program /
Readout Mode.
2. Using the PTT (push-to-talk) button and the LED display, enter the single digit code
from Table 4 below for the option to be programmed.
3. Pause—the display will change and show a hyphen, you will also hear a short low
tone.
4. Press and release the On / Volume Up to SAVE your programming entry. The base
station will sound a triple beep to indicate that programming was successful.
5. Turn the base station OFF and then ON again—the base station is now ready to use.
TABLE 4: Radio Feature Codes
Option
Code
Turn Channel Scan
ON
1
Turn Channel Scan
OFF
2
Turn Weather Channel
ON
3
Turn Weather Channel
OFF
4
Turn Weather Alert
ON
5
Turn Weather Alert
OFF
6
Assign SCAN option to Z Button
7
Assign WEATHER option to Z Button
8
Assign MONITOR option to Z Button
9
Assign CALL TONE option to Z Button
0
NOTES:
1. If Code 7 is selected Codes 1 & 2 will have no effect
2. If Code 8 is selected, Codes 3 & 4 will have no effect
3. Code 0 is entered by pressing the PTT 10 times

RADIO PROGRAMMING
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HOW TO DELETE A CHANNEL
Following the instructions in “How to Field Program Frequency &
Tone Codes” on page 13, enter a Frequency Code of “00” and a
Tone Code of “00”. Once a channel has been deleted it is no longer
available with the Channel Selector.
A deleted channel can be added back at any time. To add a deleted
channel back, follow the instructions in “How to Field Program
Frequency & Tone Codes” on page 13.
PC PROGRAMMABLE FEATURES
The MURS base station has many features that are only available
through PC programming. See your Ritron dealer or contact Ritron
directly for PC programming of these options.
Squelch Tightener on any channel can adjust carrier squelch UP to
block distant signals or DOWN to hear more distant signals.
Monitor Lock Out can be set on any channel to prevent monitoring
of the channel, only broadcasts with the correct QC or DQC code
can be heard.
Transmit Inhibit on Busy Channel can be set on any channel to
prevent transmitting when a broadcast is present on the receiver that
does not carry the correct code. This feature is usually used in
conjunction with Monitor Lock Out.
Transmit Time Out time can be changed.
Power Saver “sleep” time can be set, or power saver can be
disabled.
Courtesy Beep sounds a short tone at the end of each received
transmission to indicate that the channel is clear and you may
transmit.
Transmit Clear To Talk Beep Any channel can be set to sound a
short tone after the PTT has been pressed to indicate that the base
station is ready for you to begin talking.
Disable Field Programming to allow only PC programming.
Channel Scan can be programmed or edited to include any of the
radio channels, even channels that are not selected with the
Channel Selector button. Other programmable scan features include
scan resume delay time, busy channel blocking, last active channel
beeps, and priority scanning options.
2-Tone Paging Decode can be set on any channel. Programmable
options include the setting of the 2-Tone frequencies and duration,
All Call, Group Call, Call Transpond, automatic setting of 2-Tone
Decode when the channel is selected, automatic reset of the 2-Tone
Decode if a call is not answered within 15 seconds, and
automatically set the base station to carrier squelch mode after a 2-
Tone signal is received.
* 2-Tone Encode Each channel can be programmed with a unique
pair of 2-Tone encode frequencies between 300-1500 Hz. Pressing
the “Z” button will send the 2-Tone Code.
* DTMF ANI A unique DTMF ANI string can be programmed
separately for each channel. Pressing the “Z” button will send the
DTMF ANI.
* Note: A channel can not be programmed to do both DTMF ANI
and 2-Tone Encode.