Ericsson LBI-39012A User Manual

LBI-39012A

Mobile Communications

MDXTM CONVENTIONAL
MOBILE RADIO

Operator’s Manual

TABLE OF CONTENTS

SAFETY INFORMATION . . . . . . . . . . . . . . . 4

SAFE DRIVING RECOMMEND ATIONS FOR USERS OF

MOBILE RADIOS* . . . . . . . . . . . . . . . . . . 5

OPERATING PROCEDURES . . . . . . . . . . . . . 5

INTRODUCTION . . . . . . . . . . . . . . . . . . . 6

CONTROLS, INDICATORS, AND DISPLAYS . . . . 7

CONTROLS . . . . . . . . . . . . . . . . . . . . 7

CONTROLS AND INDICATORS . . . . . . . . 8

DISPLAY INDICATORS . . . . . . . . . . . . . 10

DISPLAY ALPHA INDICATORS . . . . . . . . . 11

OPERATING THE RADIO . . . . . . . . . . . . 12

TURNING THE RADIO ON . . . . . . . . . . . 12

Page

SELECT . . . . . . . . . . . . . . . . . . . . . . 13

CONVENTIONAL MODE OPERATION . . . . . . . 13

RECEIVING A CALL . . . . . . . . . . . . . . . 13

SENDING A MESSAGE . . . . . . . . . . . . . 13

TALK-AROUND . . . . . . . . . . . . . . . . . 14

SCAN OPERATION . . . . . . . . . . . . . . . . . . 14

SCAN SETUP . . . . . . . . . . . . . . . . . . . 14

STAR TING OR STOPPING SCAN . . . . . . . . 14

Copyright© December 1993, Ericsson GE Mobile Communications Inc.

2

TABLE OF CONTENTS (CO NTINUED)

Page

ADDING/DELETING T O/ FROM SCAN . . . . 14

RECEIVER SCAN RATE . . . . . . . . . . . . 15

USING THE RADIO WITH SCAN . . . . . . . 16

OPTIONS . . . . . . . . . . . . . . . . . . . . . . . 21

AVAILABLE OPTIONS . . . . . . . . . . . . . . . . 22

OPERATING TIPS . . . . . . . . . . . . . . . . . . . Back Cover

3

SAFETY INFORMATION

The operator of any mobile radio should be aware of certain hazards

common to the opera ti on of ve hi c ular ra di o tran sm issi ons.

A list of possible haz a rds ar e:

1. Explosive At mosphe res

Just as it is dangerous to fuel a vehicle with the motor running, be
sure to turn the radio off while fueling the vehicle. Do not carry
containe rs of fuel in the trunk .

2. Interference to Vehicular Electronics Systems

Electronic fuel injection systems, electronic anti skid braking sys­tems, etc., are typical of the type of electronic devices that may
malfunct ion due to th e lack of prote ction from radio freque ncy en ergy
present when transmitting. If the vehicle contains such equipment,
consult the dealer for the make of the vehicle and enlist his aid in
determining if such electronic circuits perform normally when the
radio is tra n sm it ti ng.

3. Dynamite Blasting Caps

Dynamite blasting ca ps may be caused to expl ode by operating a radi o
within 500 fee t of the blasting caps. Always obey the " T urn Off T w o
Way Radios" signs posted where dynamite is being used. When
transport ing bla sti ng cap s in your vehic le:

a. Carry the blasti ng ca ps in a closed meta l box wit h a soft lini ng.

b. Leav e th e rad i o OFF whenever the blasting caps are being put

into or removed from the vehicle.

4. Radi o F requenc y E ne rgy

To prevent burns or related physical injury from radio frequency
energy, do not operate the transmitter when anyone outside of the
vehicl e is wi th in t w o fe et of th e a nt en na.

5. Liquefied (LP) Ga s Powe red Vehicles

Mobile radio installa tions in vehicles powered by liquef ied petroleum
gas with the LP gas container in the trunk or other sealed-off space

4

within the interior of the vehicle must conform to the National Fire
Protection Associa tion standard ( NEPA) 58 which req uir es that:

a. The space c ont aini ng the ra di o eq uip ment shall be isolate d by a

seal from the space containing the LP gas container and its
fittings.

b. Out side filling c onnection s shall be use d for the L P gas container .

c. The LP gas container sha ll be vented to the outsid e of the vehicle .

SAFE DRIVING RECOMMENDATIONS FOR USERS OF MOBILE
RADIOS*

Read the literature on the safe operation of the radio.

• Keep both hands on the ste erin g wheel and the mic rophone in its cr adle

whenever the vehicle is in motion.

• Place cal ls only whe n veh icle is stoppe d. Use recal l diali ng to spee d the

time it takes to call.

• When talki ng fro m a moving vehi cle is unav oidabl e, drive in the slow er

lane. Keep conversations b rief.

• If conversation requires taking notes or complex thought, stop the

vehicle in a sa fe place and co ntinue th e call.

Wheneve r using a mobile ra dio exercise c aution.

*As recommen ded by the AAA

OPERATING PROCEDURES

Two-way FM radio systems must be operate d in accordan ce with the rules

and regulations of the Federal Communications Commission (FCC).
Operators of two-way radio equipment must be thoroughly familiar with the
rules th at apply to the intend ed type of radio o peration. F ollowing the se rules
will help to elimin ate confusion , assure the most eff icient use of existi ng radio
channels, and result in a smoothly functi oning radio networ k. When using this
two-way radio reme mbe r these rules:

5

1. It is a violation of FCC rules to interrupt any distress or emergency
message. As the radio opera tes in much the same way as a teleph one
"party line", always listen to make sure that the line is cl ear - that no
one else i n on the a ir - before sending m essages. If someone is sendin g
an emergency message - such as reporting a fire, or asking for help
in an accident - KEEP OFF THE AIR! Emergency calls have
priority over all othe r messa ge s.

2. Use of profane or ob sce ne langu ag e is prohi bite d by Fe de ral law.

3. It is against the law to send false call letters, or a false distress or
emergency message.

4. The FCC requires that conversations be kept brief and confined to
business. To save time, use coded messag es whenever pos sibl e.

5. Using a radio to send personal messages (excep t in an emergen cy) is
a violation of the FCC rules. Send only those messages that are
essential for busin ess ope rati on.

6. It is aga inst Fede ra l la w to rep eat or ot herwise ma ke known a nyt hing
overheard on the radio. Conversations between others sharing a
channe l must be regarde d a s con fidential .

7. The FCC requires the operator to identify himself at certain times by
means of call letters. Refer to the rules that apply to the particular type
of operation for the proper pr oc edure.

8. No chang es o r adjustm ents sha ll b e made to th e e quipm ent exce pt b y
an autho riz e d or c e rti fi ed el ec t roni c s tec hn ic ia n.

INTRODUCTION

This manual describes how to use the MDX Conventional Mobile Radio.
The MDX is a synthesized, microprocessor-based, high performa nce simple x
mobile FM rad io pr ovidin g re liab le two- way com muni c ations. Di rect m obi le
to mobile com m uni ca t ion , when ou t of re pe a te r range, is also provid ed .

In the Conventional mode, the user selects a channel and directly
commu nicates on that channel . In this mode , a system refers to a set of ch annels
and a chann el is a transmi t/ re c ei ve radio fre que nc y pa ir.

The exact operation of the radio will depend on the operating mode, the
radio’ s program ming, and t he particula r radio system. Most features desc ribed
in this manua l may be ena bl ed o r d isa bled th roug h p rogr amm in g. Consult the
system adm inistra t or f or t he pa rt icul ar fe atu re s that are pro gram med in to you r
MDX radio.

6

The following feature encrypted options are standard with the MDX

convent io na l m obi le radio:

PMPL3M Serial Control Unit (Control Head Operation)

PMPL3K Scan, Dual Priority

PMPL3F 16 channel operation

PMPL3G 32 channel operation

PMPL3H 64 channel operation

PMPL3J 128 channel operation

The following featur e enc ryp te d opt io ns ca n also be orde re d:

PMPL3C Type 99 Dec ode

PMPL3D Public Address and Exter na l Speake r Swit ch (Re -

quires option PMSU5A)

PMPL3E Emer gency (GE-STAR) and GE-ST AR ANI

CONTROLS, INDICATORS, AND DISPLAYS

The MDX Conventional mobile radio contains ten buttons, an eight
character DOT MATRIX display and seven indicators (see Figure 1). In
addition, there are times when part of the eight character display is used to
displa y th e ra di o status. Bac klightin g on but to ns i ll um in at e the Legends.

CONTROLS

POWER Momentary push-push switch. Press once to turn

the radio ON. Press again to turn the radio OFF.

VOLUME The momentary switches (auto ramping) VOL-

UME + and VOLUME -. Beeps each time the
VOLUME button is pressed, except when a call is
in process. Hold the button (up or down) to auto
ramp the vol um e .

7

8-Character
Alphanumeric Dot
Matrix LED

allows you to identify
channel selections by
descriptive names.
Names, menu options, and
status information are
displayed here.

Scan Button
enables scan
operation for the

PWR

Volume Up/Down
Ramp sets the volume

of the received audio.

selected system.

MENU button allows access
to functions and options,
including scan add/delete for
modifying the radio’s scan
list and alarm on/off for the
external alarm option that
uses your horn or head lights
to signal an incoming call.

Emergency ID/ Alarm
(optional)

sends an emergency
(GESTAR) alert and
identifying code to the
dispatcher. If no emergency
function is required, this can
be programmed as a
"HOME" switch.

Channel/SEL
Ramp scrolls through

the names of channels
programmed into the
radio, displaying them
on the Dot Matrix
display.

8

Two Flex Keys

give you one-touch
access to the menu or
optional features.
Optional keycaps are
available to identify
the functions of
pre-programmed
buttons, including T99
decod e, Scan Add/
Delete, Public
Address, Home,
External Alarm, and
display brightness.

Front-Mounted
Microphone
Connector provides

easy access to the
microphone and
programming
capabilities.

System Key scrolls
through the names of
the system (groups of
channels) program­med into the radio,
displaying them on
the Dot Matrix display

Figure 1 - MDX VHF Conventional Radio

Front Mount
Speaker with 4 watts

of audio. An optional
10-watt external
speaker is also
available, for use in
noisy environments.

CONTROLS AND INDICA T ORS

CONTROLS (CO NT’D)

MENU Momentary switch. The MENU button is used to

access options on the MDX mobile. Menu opera­tion is couple d with the CHANNEL/SE L butt ons
and the CLR butt on. To increm e nt from o ne m enu
selection to the next, simply press and release the
MENU button. Press the CLR button to return to
normal operation. The menu choices are listed
below with a description of how to change the
choices (Note: You may have some or all of these
menu choi ces pro gram med in yo ur radi o, and t hey
may be programmed in a different order than pre­sented here ).

BACKLIGHT : Press the MENU button until
"BRIGHT" appears in the display. To change the
state of the ba c kl ight press the CHANNEL/SEL +
or - button.

PUBLIC ADDRESS: Press the MENU button
until "PUB ADDR" appears in the display. Press
PTT to transmit in P A mode.

SCAN ADD/DELETE: P r ess th e M ENU button
until "SCAN A/D" appea rs in the display. Use the
CHANNEL/SEL- button to step through the
group selections for the current system. Use the
CHANNEL/SEL + button to change the scan
state. An "S" is illuminated to the right of the
display if the grou p/c hannel has SCAN enabled.

ALARM ON/OFF: Press the MENU butt on un til
"ALM ON" or "ALM OFF" appears in the display .
Press the CHANNEL/SEL + or - but ton s u ntil t he
desired state is selected. (Note: This enables or
disables the external alarm e.g. horn or lights.)

SQUELCH Press and hold "Scan" button, use "volume" up to

loosen squelch an d down to tight en squelc h.

9

CONTROLS (CO NT’D)

SYS Momentary switch. The SYS (SYSTEM) button is

used to select system changes. System may be
incremented by pressing and releasing the SYS
button. Alternately, when the display shows the
System nam e, the CHANNEL /SEL buttons ma y be
used to increment or decrement the system selec­tions. (NOTE : The radi o may be programmed with
wrap around on the system selection; this would
allow the radio to switch from the highest to lowest
system wit h one change instead of ramping all the
way through the list.)

CHANNEL/SEL Ramp Switch. The CHANNEL/SEL button is

used to increment or decrement the current channel
selection. It is also used as described above to
increment/decrement the System. In conventional
mode, these buttons change the ch an ne l sele ct io n.

CLR Momentary switch. The CLR button is used to exit

from the menu operation, monitor a conventional
channel or end a special/individual call.

HOME/
EMERGENCY

FLEX KEYS
A1, A2

DISPLAY INDICAT O R S

The radio’s display is shown in Figure 2. The character line is used to
display system or area and group or channel names and also operational
messages to the user. The line contains eight Dot Matrix LED characters. T he
7 status indicators are used to show the various operating conditions of the
radio.

10

Momentary switch. The HOME or EMER-
GENCY button is used to select a home system,
or ch annel. T he ra dio ma y be p rogram med to revert
to a particular system or channel within the se­lected or home syste m. It may also be programme d
to send an emergency message (GESTAR) when
pressed and held for approximately one second
(either on the selected system or on the Home
system).

The auxilia ry buttons are used to access frequ ently
used menu selections quickly. They can also be
programmed as a HOME, External Alarm, Public
Address, T99 decod e, and Sc a n add/ de let e.

Figure 2 - Sample MDX Display

TX On indic a te s the ra dio is transmitting.
BSY Lights whe n a chan nel is busy ( RF carri er present ).
SCN ON indicates scan is enabled.
S ON indicates channel in scan list.
P1 ON indic ate s se le c ted c ha nne l i s a pri ori ty 1 chan-

nel.

P2 ON indic ate s se le c ted c ha nne l i s a pri ori ty 2 chan-

nel.

PVT Reserved for future use (Aegis Communica tions).

DISPLAY ALPHA INDICATORS

The radio is capable of displaying status indicators in the alpha display.
Some of these messag es wil l use the enti re displ ay while oth er s use only tw o
or three cha racters. W hen the short messa ge is displaye d it may be on the right
or left of the display (PC programmable). It is separated from the normal
informati on wi th an indic a tor su ch as an aste ri sk ("*" ).

T99 T99 call received alternates with current channel

display.
T99 On Menu displa y in dicating T 99 o ption is enabled.
T99 Off Menu disp la y in dic a ti ng T 99 option is disa bled.
Pub Addr Public address option enabled .

11

ALERT TONES

The MDX Conventional mobile radi o generates a set of unique alert tones
to indic ate ope rat ing sta tus. T he followi ng se cti on i denti fi es a nd d esc ri be s the
alert tones used in the MDX radio.

SELF CHECK
TEST AL ER T

CALL DISABLED
ALERT

CARRIER CONTROL
TIMER

T99 CALL RECEIVED After decoding a T99 call, the received signalling

One beep is sounde d afte r the radi o is turne d on to
indicate that the rad io has passed the self dia gnostic
test. Optional in PC programmer.

You will hea r a cont in uous l ow pit c hed t one when
your radio is set to a receive (de code) on ly channel
and you press PTT on the microphone. This tone
indica tes that you are not al lowed to pl ace a c all on
this setti ng.

The Carrier Control Timer alert is a pulsing pitched
tone y ou will hear w heneve r you have kept t he PT T
button cont inu ously pre s sed for a pr ep rogr amm e d
length of time. The transmitter shuts down when
the pulsing low pitched tone starts, interrupting
communications. To maintain communications,
release an d re-key the mic roph one . This r esets the
timer and turns the transmitter back on. The CCT
is a built in prec aution aga inst extended use of the
system.

2-tone is sounded to alert you of the incomin g call.

OPERATING THE RADIO

TURNING THE RADIO ON

1. Push the POWER switch. The displa y shows the channel alpha name
once power up is complete. When powering up , the last selec ted
Channel should be displayed unless the radio is programmed for a
preprogra mmed power up. The radi o optionally genera tes a beep once
the power up sequence is comple te.

2. Set the volume using the VOLUME RAMP button. A short beep
sounds each time t he VOLUME bu tton is pre ssed. The be eps will not
sound if a call is being received.

12

SELECT

To select a different channel when you have selected a conventional

system:

1. Press the CHANNEL/SEL + or - ramp button until the desired

channel name appears in the alphanumeric display. A tone sounds
each time the chan ne l nam e cha nge s unless the BSY indic a to r is on.

CONVENTIONAL MODE OPERATION

1. Select the conventional channel using +/- ramp button.

2. Determin e if the channel is in use before mak ing the cal l by pressing

CLR to moment arily disa ble the squelch a nd monit or the ch anne l for
activity. Also, removing the MIC from the holder disables Channel
Guard which allows monitori ng of the ch annel wit hout disa bling the
squelch.

3. Press PTT to send the message.

RECEIVING A CALL

1. Make sure that the radio is turned
selected using the CHANNEL/SEL + or - ramp button and the SYS
button.

2. Press the CLR button to monitor th e channel. Noi se will be heard i f
there is no activity on the channel. This function is also useful for
setting t he desi re d vol ume level.

3. You will hear the voice message automatically if a valid message is
recei ve d by your radio.

SENDING A ME SSAGE

1. Make sure the radio is turne d ON, and the proper Channe l and System
have been selected.

2. Press and ho ld the CLR swit ch and then adjust the VOLUME con trols
for the desired listening level. Release CLR switch.

3. D ecide w hat yo u want t o say. If you intend a lengt hy mes sage ( or
several messages), the vehi c le engine should be run ning to maintai n
the bat te ry c ha r ge.

ON, and the proper channel is

13

4. Observe the BSY indicator and then press CLR the switch to assure
that the channel is not in u se .

5. Remove microphone from the hanger, press the PTT switch and
identify yourself. The indicator will be shown each time the
PTT switch is p re sse d.

6. Release the PTT switch and wait for an answer to your call. Then
complete your messa ge .

7. When the PTT switch is pressed continuously for a pre-programm e d
time (de fault o f 30 sec onds), the c arrier control time r (if enabl ed) will
sound a pulsed alert tone and unke y the transmitter . Release and press
the PTT switch ag ain to rese t the timer and resume conversation .

Always speak in a normal tone of voice. Hold the microphone
cupped in your hand and touching your cheek lightly. Speak
across the face of you r microphone, not directly into it. Shouting
will degrade your transmission, so do not speak any louder than
normal.

TX

NOTE

SCAN OPERATION

SCAN SETUP

Y o u may program your rad io to scan a number of Channel s for activity on

the selected system .

Starting Or Stopping SCAN

Press the SCAN button to alternate between Scan on (SCN indicator

illumi na ted) and Sca n of f (indicator dark ).

Adding/Deleting To/From SCAN

SCAN should be off befor e changi ng t he SCAN list .

1. Press the menu but to n until SCAN A/D is d ispl ay ed .

2. Press the CHANNEL/SEL (-) button until the CHANNEL name is
displayed.

14

3. Press the CHANNEL/SEL (+) button until the desired priority level
is displayed by the scan priority indicators on the right side of the
displa y; the choice s are S, P2; P1 or a ll of f (all off remove s the c hannel
from the SCAN list ).

4. Press the CLR button whe n compl ete d to retur n to norm al ope rati on.

If your radio has one of the auxiliary keys preprogram med to edit the SCAN
list, the list may be changed by using the CHANNEL/SEL buttons to display
the CHANNEL name, and then pressing the auxiliary key until the desired
level is displayed.

NOTES

1. The radio will remember the scan state through a power cycle
unless progra m med wi th a pre defi ne d powe r up stat e.

2. The radio may be programmed to stop scanning when the
microphone is rem ove d fro m the hookswitc h.

3. When the radio is programmed, a FIXED SCAN list can be
speci fi ed . If thi s i s done, the SCA N list canno t be ch anged.

4. A previous channel with priority will become a non-priority scan
channe l when a new priority cha nne l is progra m m ed .

The SCAN function a llows monitoring of up to 1 6 recei ve channels on the
selected system. The scanned channels may be any frequency within the
frequency ban d limits of the r adio and ma y be Channel Guard protec ted . All
scan functions are retained in memory, even if the 12 Volt vehicle battery is
disconnected.

Any chann el m ay be scanne d with or wit hou t a p rio rity l eve l. One c ha nnel
may be programmed for Priority 1 (P1) and another for Priority 2 (P2) with
any or all remainin g ch an ne ls progra mm ed a s non-pr ior it ies.

RECEIVER SCAN RATE

The sc an ra te for the radio wi ll va ry de pending upon the nu mber of ch annels
programmed into the scan list and whether or not Channel Guard is
programmed. The scan rate will be faster when fewer channels are program­med into scan memory.

15

Scan operati on will be de term i ned by the foll owin g condi ti ons:

• PRIORITY 1, PRIORITY 2 and NON-PRIORITY PROGRAMMED

The Priority 1, Prior ity 2 and up to 14 remaining channels will b e
scanned. Once a carrier is detected (and if programmed, the correct
Channel Guard is decoded), the display will indicate that channel.
Sampling of the Priority 1 and Priority 2 channels continues while
receiving a messag e. Should a Priority 1 or 2 channel carrie r (and correct
Channel Guard) be detected while a non-priority channel is being
received, the applicable indicator, P1 or P2 lights, and the channel is
switched to the Priority 1 or 2 channel regardless of what is being
received on the non- pri ori ty cha nne l .

• NON-PRIORITY PROGRAMMED

Up to 16 non-priority channels may be scanned. Once a carrier is
detected (or correct Channel Guard is decoded) the digital display will
indicat e that channel. Sc anning will stop and rem ain on the channe l until
the carrier disappears; after a few seconds scanning resumes. The
channe l s are scanned in desce ndi ng or de r.

USING THE RADIO WITH SCAN

The Sel ecte d Channel

The SELECT ED cha nnel is the channe l in the displ ay whe n scan is tur ned
on by pushing the SCAN switch. When a signal is not being received, the radio
reverts to this channel for transmitting. When a signal is being received, the
radio can be PC programmed to either revert to the SELECTED channel or
remain on t he rece ived chann el for tra nsmission.

The SEL ECTED channel does n ot ne c e ssarily ha ve to be a ch annel in the
scan list. The SELECTED channel will be temporarily entered into the scan
list and scanned until the SELECTED channel is changed.

When scan is turned off by pushing the SCAN switch, the radio will return
to the SELECTED ch annel.

Display

Channel indicator

While no signal is being re ce ived, the chan ne l indi cat or wi ll alwa ys sho w
the SELEC TED channel . When an ac tive chann el is receiv ed, the ch annel
indicato r will show the rec e ived c hannel.

16

SCN indicator

When the SCAN button is pushed, the radio will light the SCN indicator
and begin scanning. The SCN indicator will flash when the microphone is
placed off-hook to show the radio is no longer scanning (only if the radio is
PC programme d not to sca n off-h ook) .

Transmitti ng Whi le In Sc an:

Transm itter operati on in scan is determined by the PC programmin g of the
radio’s personality. A flow chart is provided in this section to summarize the
scan op er at ion described be lo w.

• Off-hook scan not enabled (de fa ult ):

With off -hoo k sc an not e nabl ed (nor mal d ef ault c on dition), all sc an ning
will stop when the microphone is placed off-hook. The SCN indicator
will flash to show all scanning has stopped. If a signal is not being
received when the mic is place d off-hook , the radio will transm it on the
SELECT ED cha nnel. If a si gnal is bein g rece ived whe n the mic is place d
off-hook, the radio can be PC programmed (using the "scan transmit
option") to eith er stay on the receive channe l or revert to the SELECT ED
channel. When the mic is placed back on-hook, the radio will
imme diatel y star t scanni ng, eve n if the rece ived channe l was st ill ac tive .

• Off-hook scan enabl e d:

With off- hook scan en ab led, movi ng th e microp hone off-hook wil l not
affe ct scan ope rat ion. The radio will co ntinue scann ing. I f a signa l is not
being receive d, th e r ad io will tran sm i t on th e SELECTE D c ha nnel. If a
signal is being received, the radio can be PC programmed (using the
"scan transmit channel" option) to either stay on the receive channel or
revert to the SELECTED channel when the mic PTT is keyed.

• On-hook

When the microphone is on-hook (in the microphone hanger) and the
radio is not receiving a channel, the radio always transmits on the
SELECTED ch an ne l.

When the radio is receiving a channel the radio’s personality can be pro­grammed to transmit either on the received channel or the SELECTED
channe l. If the radio was program med for the SELE CTED ch annel, the
display changes to the SELECTED channel when the transmitter is
keyed.

17

Monitor (CL R) Switc h Operation In Scan

The CL R swi tc h d oes not opera t e whil e sca nning in ac tive cha nn el s. Whe n
a channel beco mes act ive, the CLR swit ch opera tes only during the scan hang
time aft er the ch an ne l a ctivity disappe a rs.

Channel Changes In Scan

Pushing the channe l switches (UP or DOWN) while scan is turned on will
change the SE LE CT E D ch an nel assignm e nt. If a sig nal is being r ec e iv ed an d
the channe l swi tc hes are pushed, the radio will re vert to the new SELECTED
channel assignment. After 2 seconds, if no activity appears on the new
SELECTED channel, scanning will resume. if the SELECTED channel is
change d to a channel not in the sca n li st, the ne w ch an nel will be tem po r ar il y
added to the sca n li st unt il the SE LE CT E D ch an nel is change d a ga in.

• Te mp ora ry c ha nne l del e ti ons

The SCAN func tion must be turn ed of f to ma ke a ny pe rma nent change s
(additions, deletions, re-priorizations) to the scan list. While in scan,
tempor ary chan ne l de le t ion s ma y be made to the sca n li st. The original
scan list wil l be back i n effe ct by ei ther turn ing scan of f (by pushing t he
SCAN switch ) or by turning the radio power off and back on.

When the radio stops scanning on an active channel, the channel may
be temporarily deleted by pressing the applicable A1 or A2 key
(pre-programmed for SCAN ADD/DELETE) or by going into Menu
mode SCAN ADD/DELETE and pressing the CHANNEL/SELECT
UP(+) button. The radio will immediately resume scanning while
skipping over th e temporarily delet ed chann el.

Temporary deletions cannot be made until the radio stops on an active
channel. P1 and P2 channels cannot be temporarily deleted.

18

19

20

OPTIONS

Type 99 Optio n

If the Type 99 Option is present, individual selective calling is possible.
Press the programme d Flex key or use the menu and CHANNE L/SEL keys to
enable the decoder option (Scan m ust be off ). The LED display wi ll show the
option status: "T99 ON" or "T99 OFF". Press the button a second time to
toggle the option status. The displa y will revert to norma l channel displ ay after
5 seconds. When a call is received, an alert tone wil l be heard and the display
will flash, alter nate ly "T9 9" and th e channe l selec ted. After receiv ing the call,
press the CLR button to reset the decoder for the next call. The display will
stop flashing.

If a call was recei ved and the displ ay is flashi ng, the CLR butt on must fir st
be pushed before the T99 option may be disab le d.

If the Horn Alert option is present with the Type 99 option, the radio can
beep the vehicle horn when a Type 99 call is received. This option permits
alerting persons out of the vehicle whe n a call is re ce i ve d. The Horn ON/ O F F
switch which is m ou nte d on or near the ra di o is use d t o turn of f t he horn beep
relay.

Public Addre ss Option

If the Public Address Option is presen t, the ra dio may be use d as a public
address ampl ifie r . Pres s the progr amm ed Fle x k ey (or u se the menu ) to en ab le
the option (Scan must be of f). The display will show "PUB ADDR" . When the
microphone PT T swit ch is ke yed, the radi o no longe r t ransm its, but allows the
microphone audio to feed the spe aker . Adjust the VOLUME for desire d leve l.
Press the Flex key or use the CHANNEL/SEL a second time to disable the
option. T he display will revert t o normal channel display. Ch anging ch annels
or turning sc an on wil l also tu rn the option off.

The public address micr ophone audio normally fee ds an external speaker.
An ON/OFF switch, which is mounted on or near the radio, allows selecting
eith er the intern al or extern al spe aker fo r the receiv er aud io. The ON/OFF
switch turns the receiver audio on or off to the external speaker. This switch
still func ti ons for the rece i ver audio with the PA option disabled.

21

AVAILABLE OPTIONS

The following equipment options are available for the MDX radio. Refer

to your loc al ra dio sup pli e r for or de rin g inf orm a ti on.

MDX Conventional Option al Acces sories

Option Description Part Number

PMAN1R VHF/UHF roof mount antenna with

TNC connector
PMCC9M External speak e r c a ble, 18 in c hes 19A149590P10
PMCD1W External speaker cable, 16 feet,

requires option PMZM1K
PMCD7W 9’ Power Cable 19B801358P18
PMCD7 Z Externa l opt io n cable, 2 fee t 19C851 58 5P 14
PMCD9A Power Cable, 18 feet 19B801358P17
PMLS1F Speaker, MIL-STD-810C & D, 5" x 5",

requires options PMCD7Z & PMCC9M
PMMA1L Desk mounting wedge for station use. 19C851086P14
PMMA1M Spare mounting bracket 19A138051G11
PMMC3 X Desk m icr op ho ne for st ati o n use . 19C8 51 08 6P 14
PMMC5 K DT M F microp hone 344A4611P1
PMMK3D Round pushbutton kit with commonly

used legends. Includes button

extraction tool.
PMPD1A Noise suppression kit 19A148539G1
PMPS1C Power supply, 120/240V, 50/60 Hz,

13A. Fo r sta t ion use .
PMPS1D Power supply, 240V AC, 50/60 Hz,

13A. Fo r sta t ion use .
PMSU1C Alarm (horn) relay kit, requires option

PMCD7Z
PMZM1K External speaker kit, requires option

PMCD7Z, includ es optio ns PMLS1F

and PMCC9M

19B209568P6

19A149590P10

19A149590P1

344A4254G2

19A704 64 7P2

19A704 64 7P3

19A705499P1

PROGRAMMING OPTIONS
TQ3370 Programming Interface Module Kit
TQ3372 Programming Cable
TQ3346 PC Radio Programmer

22

WARRANTY

A. Ericsson GE Mobile Communications Inc. (hereinafter "Seller") warrants to the original purchaser for

use (hereinafter "Buyer") t hat Equipment manufactured by Seller shall be free from defects in material,
workmanship and title, and shall conform to its published specific ations. With respect to any Equipment
not manufactured by Seller (except for integral parts of Seller’s Equipment to whic h the warranties set
forth above shall apply). Seller gives no warranty, and only the warranty, if any, given by the
manufacturer shall apply . Batteries are excluded from this warranty but are warranted under a separate
Nickel-Cadmium Battery Warranty.

B. Seller’s obligations set forth in Paragraph C below shall apply only to failures to meet the above

warranties (except as to title) occurring within the following periods of time from date of sale to the
Buyer and are conditioned on Buyer’s giving written notice to Seller within thirty (30) days of such
occurrence:

1. for fuses, incandesc ent lam ps, vacuum tubes and non-rechargeable batt eries, operable on arriv al
only .

2. for parts and accessories (except as noted in B.1) s old by Seller’s Service Part s Operation, ninety
(90) days.

3. for all other Equipment of Seller’s manufacture, one (1) year.

C. If any Equipment fails to meet the foregoing warranties, Seller shall correct the failure at its option (i)

by repairing any defective or damaged part or parts thereof, or (ii) by making available at Seller’s factory
any necessary repaired or replacement parts. Any repaired or replacement part furnished hereunder
shall be warranted for the remainder of the warranty period of the Equipment in which it is installed.
Where such failure cannot be corrected by Seller’s reasonable efforts, the parties will negotiate an
equitable adjustment in price. Labor to perform warranty service will be provided at no change only for
the Equipment covered under Paragraph B.3, and only during the first three (3) months following the
date of sale to the Buyer. Thereafter , labor will be charged at prevailing rates. To be eligible for no-charge
labor, service must be performed by an authorized General Electric Service Station or other Servicer
approved for these purposes either at its place of business during normal business hours, for mobile
or personal equipment, or at the Buyer’s location, for fixed locat ion equipment. Service on fixed locatio n
equipment more than thirty (30) miles from the Service Station or other approved Servicer’s place of
business will include a charge for transportation.

D. Seller’s obligations under Paragraph C shall not apply t o any Equipment , or part t hereof, whic h (i) has

been modified or otherwise altered other than pursuant to Seller’s written instructions or written
approval or, (ii) is normally consumed in operation o r, (iii) has a normal life inherently shorter than the
warranty periods specified in Paragraph B, or (iv ) is not properly s tored, ins talled, used, maintai ned or
repaired, or, (v) has been subject ed to any other kind of misuse or detriment al exposure, or has been
involved in an accident.

E. The preceding paragraphs set forth the exclusive remedies for claims (except as to title) based upon

defects in or nonc onform ity of the Equipment, whether the c laim is in contract, warranty, tort (inc luding
negligence), strict liability or otherwise, and however instituted. Upon the expiration of the warranty
period, all such liability shall terminate. The foregoing warranties are exclusive and in lieu of all other
warranties, whether oral, written, expressed, implied or statutory. NO IMPLIED OR STATUTORY
WARRANTIES OF MERCHANTABILI TY OR FITNESS FOR P ARTICULAR PURPOSE SHALL APPLY .
IN NO EVENT SHALL THE SELLER BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL,
SPECIAL, INDIREC T OR EXEMPLARY DAMAGES.

This warranty applies only within the United States.

1-800-528-7711 (1-800-237-0138 in Virginia).

ECX-362R

23

FREQUENTL Y CALLED NUMBERS
MEMOR Y LOCATION NAME TELEPHONE NUMBER
01

02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

24

NOTES

25

NOTES26NOTES

27

EMERGENCY NUMBERS

Printed in U.S.A.

Police

State Police

Fire

Poison Control

Ambulance
Life Saving and Rescue Squad

OPERATING TIPS

The following conditions tend to reduce the effective range of two-way

radios and should be avoided whene ve r possible .

Operating the radio in low areas of terrain or while under power lines or

bridges.

Obstructions such as mount a ins or bui ldi ngs between the vehicle sen din g

and the system/per son re cei vin g the messa ge .

In areas where transmissio n or recept ion is poor , some impr ovem ents may
be obtain ed by insur ing that t he antenn a is vert ical (pa rticularly if a g lass mount
antenna is used ). Moving a few yards in a nother directi on or moving to a hig her
elevation may also improve communications.