Midland 70-3350 User manual

HM35 Series – User’s Manual
Rev. 2.0 on 1 March 2004 Page 1 of 32
Midland
Model 70-3350 Vehicular VHF Transceiver
Model 70-5445 Vehicular UHF Transceiver
User’s Manual
Copyright ©2004 by Midland Radio Corporation; all rights reserved.
This device complies with part 15 of the FCC Rules
Operation is subject to the following two conditions:
1. This device may not cause harmful interference,
and
2. This device must accept any interference
received,
including interference that may cause undesired
operation.

HM35 Series – User’s Manual
Rev. 2.0 on 1 March 2004 Page 2 of 32
FCCRFEXPOSURE
The FCC has adopted a safety standard for human exposure to RF energy. Proper operation of this
radio under normal conditions results in user exposure to RF energy below the Occupational Safety and
Health Act and Federal Communication Commission limits.
Mandatory Safety Instructions to Installers and Users:
This radio is NOT approved for use by the general population in an uncontrolled environment. This radio
is restricted to occupational use and work related operations only. Radio operators must have the
knowledge to control their exposure conditions and the exposure conditions of bystanders and/or
passengers to satisfy the lower exposure limit allowed for General Population. To comply with FCC RF
exposure limits, DO NOT operate the transmitter of this mobile radio when a person outside the vehicle
is within 94 centimeters (38 inches) of the antenna. The antenna supplied by the manufacturer or radio
dealer must be mounted at a location such that during radio transmission, no person or persons can
come closer than the above indicated minimum safe distance to the antenna, i.e. 94cm. To comply with
current FCC RF exposure limits, the antenna must be installed at or exceeding the minimum safe
distance stated above, and in accordance with the requirements of the antenna manufacturer or
supplier.
Vehicle Installation Instructions:
The antenna used for this transmitter must be mounted on the center of the roof ONLY and must be
installed in vehicle having the following characteristics in order to prevent bystanders and passengers
from being exposed to levels exceeding the limits for General Population/Uncontrolled Exposure
environment:
All passengers must be sitting under a solid metal roof.
Rooftop width must be at least 76 inches OR the edges of the physical boundary of the vehicle must
be at least 76 inches apart.
DO NOT operate the radio without the proper antenna installed. Do not substitute any antenna for the
one supplied or recommended by the manufacturer or radio dealer. The antenna gain must not exceed 0
dBd. By not following the antenna recommendations you may be exposing person(s) to excess radio
frequency radiation. You may contact your radio dealer or the manufacturer for further instructions.
DO NOT transmit more than 50% of total radio use time (50% duty cycle). Transmitting for more than
50% of the time can cause FCC RF exposure compliance requirements to be exceeded. This radio is
transmitting whenever the TX icon is displayed on the LCD. Pressing the PTT switch on the side of the
microphone normally causes the radio to transmit.
Note: The preceding information is provided to make you aware of RF exposure and how to
ensure that this radio is operated within FCC RF exposure limits.
You, as the qualified end-user of this radio device must control the exposure conditions of bystanders to
ensure the minimum separation distance, stated above for satisfying FCC RF exposure compliance, is
maintained between the antenna and nearby persons. Transmit only when all person(s) are at least the
minimum distance from the properly installed, externally mounted antenna.
IMPORTANTSAFETYINFORMATION
CAUTIONS
The antenna connector must be snugly tightened to maintain proper electrical connection and
moisture resistance.
Equipment must be grounded according to Midland Radio Corporation installation instructions for safe
operation.
Equipment should be serviced only by a qualified technician. Refer to radio service manual for
additional information on installation and safety precautions.
WARNING!
! DO NOT allow the antenna to touch or come in very close proximity with the eyes, face, or any
exposed body parts while the radio is transmitting
! DO NOT operate the radio in explosive or flammable atmospheres. The transmitted radio energy could
trigger blasting caps or cause an explosion.
! DO NOT allow children to operate or play with this radio.
Note: The above warning list is not intended to include all
hazards that may be encountered when using this radio.

HM35 Series – User’s Manual
Rev. 2.0 on 1 March 2004 Page 3 of 32
In this manual…
1 GENERAL INFORMATION FOR THE HM35 SERIES.................................................................................... 5
2 ABOVE ALL… SAFETY!................................................................................................................................ 6
2.1 Conventions and Symbols Used in This Manual...........................................................................................................6
2.2 Warnings.......................................................................................................................................................................6
2.3 Security.........................................................................................................................................................................6
2.3.a General precautions.........................................................................................................................................6
2.3.b Operating conditions/usage..............................................................................................................................6
2.3.c Installation........................................................................................................................................................7
2.4 Assistance.....................................................................................................................................................................7
3 PARTS OF THE RADIO AND THEIR USE..................................................................................................... 8
Front panel..............................................................................................................................................................................8
Rear panel..............................................................................................................................................................................8
4 CHECKING THE PARTS.............................................................................................................................. 10
4.1.a Package contents...........................................................................................................................................10
4.1.b Hand-held microphone...................................................................................................................................10
5 ADVICE FOR INSTALLATION ..................................................................................................................... 11
5.1 Location/mounting of radio parts.................................................................................................................................11
5.1.a Transceiver.....................................................................................................................................................11
5.1.b Detachable front panel ...................................................................................................................................11
5.1.c Hand-held microphone mount........................................................................................................................11
5.2 Installation of the vehicular antenna............................................................................................................................11
5.3 Connections................................................................................................................................................................12
5.3.a Antenna..........................................................................................................................................................12
5.3.b Power supply..................................................................................................................................................12
5.3.c Connection/Disconnection of the microphone................................................................................................12
5.3.d External speaker (optional) ............................................................................................................................12
6 BASIC OPERATIONS................................................................................................................................... 13
6.1 Turning HM35 on/off ...................................................................................................................................................13
6.2 Volume adjustment .....................................................................................................................................................13
6.3 Channel selection........................................................................................................................................................13
6.4 Reception....................................................................................................................................................................13
6.5 Squelch adjustment.....................................................................................................................................................13
6.6 Monitor........................................................................................................................................................................14
6.6.a Monitor from the menu ...................................................................................................................................14
6.6.b Monitor using the microphone........................................................................................................................14
6.7 Transmission...............................................................................................................................................................14
6.7.a Time Out Timer (TOT)....................................................................................................................................14
6.7.b Busy Channel Lock Out (BCLO) ....................................................................................................................15
6.7.c Selecting transmission power.........................................................................................................................15
7 USE OF COMMANDS/OPTIONS.................................................................................................................. 16
7.1 How to navigate the command menu..........................................................................................................................16
7.2 Summary table for the command menu......................................................................................................................17
Menu diagram.......................................................................................................................................................................18
7.4 Meanings of display icons...........................................................................................................................................18
7.5 Meaning of function key icons.....................................................................................................................................18
Each function key is assignable. The table here below summarizes the meaning of the icons displayed once a function key
is pressed. ............................................................................................................................................................................18
8 CUSTOMIZATION......................................................................................................................................... 20
8.1 Adjustment of microphone sensitivity..........................................................................................................................20
8.2 Adjustment of display contrast....................................................................................................................................20
8.3 Backlight adjustment...................................................................................................................................................20
8.4 Exclusion of internal speaker......................................................................................................................................21
9 USE WITH CTCSS/DCS AND/OR SELECTIVE CALLS...............................................................................22
9.1 Reception....................................................................................................................................................................22
9.2 Transmission...............................................................................................................................................................22
9.2.a CTCSS/DCS Transmission ............................................................................................................................22
9.2.b Sending a selective call..................................................................................................................................22
9.2.c Sending a variable selective call....................................................................................................................23
9.2.d Sending an emergency selective call.............................................................................................................23
10 ADVANCED FUNCTIONS ............................................................................................................................ 24
10.1 Channel scanning .......................................................................................................................................................24
10.1.a Activation of scanning ....................................................................................................................................24
10.1.b Temporary exclusion of channels from scanning...........................................................................................24
10.1.c Temporary pause in scanning........................................................................................................................24
10.1.d Changing the channel scanning list................................................................................................................25
10.2 Rapid recall of home channel......................................................................................................................................25

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10.3 Locking microphone’s keypad.....................................................................................................................................25
10.4 Signal reception attenuator .........................................................................................................................................26
10.5 Talk Around.................................................................................................................................................................26
10.6 Confidential transmission (optional scrambler board).................................................................................................26
10.7 Audio amplifier (PA function).......................................................................................................................................27
10.8 Auxiliary output............................................................................................................................................................27
10.9 External alarm.............................................................................................................................................................27
11 CLEANING AND MAINTENANCE................................................................................................................ 29
11.1 Maintenance of the radio.............................................................................................................................................29
11.1.a Cleaning the radio..........................................................................................................................................29
11.1.b Connectors.....................................................................................................................................................29
12 OPTIONAL ACCESSORIES......................................................................................................................... 30
13 CONNECTIONS............................................................................................................................................ 31
13.1 Input/Output rear connector ........................................................................................................................................31
14 ALPHABETICAL INDEX............................................................................................................................... 32

HM35 Series – User’s Manual
Rev. 2.0 on 1 March 2004 Page 5 of 32
1 GENERAL INFORMATION FOR THE HM35 SERIES
This user’s manual describes the standard functions of the HM35 series of vehicular transceivers, available in
different versions which vary according to frequency band.
HM35 is a robust vehicular radio “SYSTEM” equipped with highly advanced functions that have been designed for
ease of use and flexibility for various needs, thanks to “Flash EEProm” technology.
Specifications of HM35’s transceiver are compatible with ETS 300-086 and ETS 300-113; as well, HM35’s highly
advanced design and resistance conform to IEC529 level IP54 and to MIL STD 810 C, D, E and F.

The manufacturers, in their effort to constantly improve product quality, reserve the right to change specifications without
forewarning.
 The functions available to the user vary depending on the radio’s programming.
 Use of this transceiver is subject to authorization from the appropriate local authority.

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Rev. 2.0 on 1 March 2004 Page 6 of 32
2 ABOVE ALL… SAFETY!
2.1 Conventions and Symbols Used in This Manual
 Notes such as this one indicate practical advice that we recommend following for simplified use of the device, and for optimal
performance.

Warning symbols such as this one indicate a crucial description for avoiding serious inconvenience, possible
damage to the device, and potential danger to yourself or other persons.
• The names of buttons and keys are written in bold.
• Messages that appear on the display (e.g., names of menus and sub-menus) are shown in this font (courier new).
• Sentences and important words are written in italics.
2.2 Warnings

Writing of this manual has been completed with the intention of supplying comprehensive, precise and up-to-date
information. CTE International will not assume responsibility for errors outside their control. Furthermore, the
manufacturer does not guarantee modifications to the device that are carried out by unauthorized persons, or faulty
installations which influence the applicability of the information in this manual.
 The reliability of the information provided in this manual is understood to allow for possible errors and omissions,
and refers to the software version available at the time of printing.

Use of this transceiver is subject to applicable local regulations, as well as to the use of good sense. When
questions regarding its operation arise, please contact your vendor or a CTE International authorized service center
before using the transceiver.
2.3 Security
 Your portable ALAN HM35 transceiver is designed to give you maximum security and reliability. As with all electrical
devices, basic precautions should be followed in order to avoid damage to other objects or to people - including
yourself and your radio. Please see the following precautions:
2.3.a General precautions
• This device is to be used solely as an aid to work performance. Its settings may be affected by different factors, such as
defects or malfunction of the device, environmental conditions, or improper use.
• It is important to read – and follow – all of the warning labels and instructions placed on the device and its accessories.
• Do not open the transceiver for any reason, or attempt to repair it (with the exception of the routine maintenance described in
this manual). Unauthorized opening of the transceiver will nullify the warranty, and may cause damage that requires drastic
repair work. Please contact your local vendor for assistance.
• Do not let your radio get wet. If the transceiver happens to get wet, dry it as soon as possible with a soft, clean cloth. If you
think liquid may have penetrated HM35’s housing, see your authorized service center as soon as possible.
• Only use original accessories; anything else may seriously damage your transceiver.
• Turn off your radio before cleaning it. For cleaning, follow the instructions outlined in Chapt. 11.
• Pay attention to environmental conditions. Your radio was designed to be used in extreme environmental conditions, though
excessive heat or cold should be avoided.
• Operating conditions/usage
• Do not use the radio when driving. Driving regulations expressly prohibit the use of transceivers by drivers while the vehicle is
in motion.
• Do not operate the radio near shieldless explosives or in potentially explosive environments (e.g., in the vicinity of gas
stations). A single spark may cause an explosion.
• Do not approach the transceiver’s antenna during transmission. The radio functions at optimum levels when the microphone is
held at a distance of 5 to 10cm from the mouth, and when the antenna is installed at the centre of the roof, in a vertical position
and free from obstacles.

HM35 Series – User’s Manual
Rev. 2.0 on 1 March 2004 Page 7 of 32
2.3.b Installation
• Installation and removal of the radio should be carried out only by experienced technicians. The information found in this
manual are meant solely as a complement to the experience held by the technician, who should assume full responsibility for
the installation.
• This transceiver generates and irradiates electromagnetic energy (EME) at radio frequency (RF), and as such must be
installed and placed in operating conditions that are in conformity with the instructions contained in this manual and with
current regulations. Failure to follow these instructions can cause personal injury and/or serious malfunction of the device.
• It is very important to follow the requirements relative to the prevention of radio frequency exposure. Unauthorized changes or
modifications to this device may invalidate conformity to regulations. All changes or modifications to the radio must be
approved in writing by the manufacturer.
• Ensure that your power supply corresponds to the values cited in this manual. In case of doubt, contact your local vendor.
2.4 Assistance
We urge you to write the serial number of your transceiver in the space provided below. This number is found on
the transceiver’s identifying label. This number will be useful in the event of repair/assistance and/or loss and/or
theft of the device.
Serial number_______________________

HM35 Series – User’s Manual
Rev. 2.0 on 1 March 2004 Page 8 of 32
3 PARTS OF THE RADIO AND THEIR USE
3.1 Front panel
[1] Display - constantly displays the operating status of the device and guides the use of various functions
through a series of icons and messages.
[2] On/Off-Volume knob – used for turning the radio on/off and for adjustment of reception volume.
[3] Microphone socket – this RJ type socket connects the standard hand-held (MK06/35) or keypad microphone
(MK06/35-K) to the radio.
[4] Programmable function keys F1, F2, F3 and F4/ESC enable the user to recall commonly used functions or can
be programmed with fixed selective calls.
The F4/ESC button is also used for exiting a menu (ESC).
[5] (up) / (down) buttons – for channel selection and navigation of the command menu.
[6] Menu/↵button – for accessing the command menu and confirming the option shown on the display.
[7] Internal speaker.
[8] Status LED – is lit with different colors to indicate the radio’s status (transmission, busy channel, etc.)
3.2 Rear panel
[9] Power cable – this red/black cable connects to a 13.8 VDC power source (red is positive and black is
negative), for example to the vehicle battery.
9
10 11
3
7
2
6
5
1 8
4

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Rev. 2.0 on 1 March 2004 Page 9 of 32
[10] Input/output connector – for connection to the external speaker and for activation of external devices. For
connections, refer to Par. 13.1.
[11] Antenna socket - this SO 239 (UHF) socket is for connecting a suitable antenna. Another option is to use a
BNC-type connector. For further details, please contact your local vendor.

HM35 Series – User’s Manual
Rev. 2.0 on 1 March 2004 Page 10 of 32
4 CHECKING THE PARTS
4.1.a Package contents
(a) Transceiver
(b) Power cable
(c) Vehicle bracket with screws and knobs for mounting
(d) Mounting piece for microphone, with screws
(e) User’s manual (this manual!)
 Depending on the model, some parts may already be attached/connected to the device. If any parts are missing or damaged,
contact your vendor as soon as possible.
4.1.b Hand-held microphone
IMPORTANT! The microphone is ordered separately, and can be one of the following two types:
• Standard microphone MK06/35 – microphone for general use, with push-to-talk transmission button (PTT).
• Keypad microphone MK06/35-K – includes standard microphone functions, plus variable selective calling (if activated during
programming).
Both microphones support the monitor function activation when the microphone is removed from its mount. For
further details, refer to par. 5.1.c.

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Rev. 2.0 on 1 March 2004 Page 11 of 32
5 ADVICE FOR INSTALLATION

WARNING! Installation of this device must be performed by qualified persons who are equipped with the proper
tools. The information provided below are designed solely as a complement to the experience held by the
technician, who should assume full responsibility for the installation. Incorrectly installing the transceiver may
seriously damage the device or cause damage to people or property. Follow all of the instructions found in this
chapter and in Chapt. 2.

Installation must be in conformity with the regulations of the vehicle manufacturer. For questions or doubts
regarding this conformity (e.g., holes, the drawing of power, cable passages, etc.), contact your vehicle
manufacturer’s service centre.
 As with all electrical devices, this radio requires a periodic laboratory check-up, otherwise its performance cannot be
guaranteed. For further details, contact the administrator of your radio network or the CTE International technical
office.
5.1 Location/mounting of radio parts
5.1.a Transceiver
Select a location for the radio that is easily accessible to the operator, keeping in mind the security conditions
outlined in Chapt. 2. Use the bracket and screws included in the package to mount the radio.
5.1.b Detachable front panel
In order to reduce obstruction in the driver/passenger area, the detachable front
panel can be installed on the dashboard, using the proper optional kit available.
For separation and mounting of the front panel, refer to the instructions found in
the kit.
5.1.c Hand-held microphone mount
The mount provided (mod. R14053) is to be used as a storage place for the microphone when the radio is inactive.
An option available to the user is the monitor function (hang-up), which is automatically activated when the
microphone is removed from its mount.
For further details regarding the monitor function, refer to par. 6.6.
Microphone installation:
1) Fix the bracket in a position close to the front panel of the radio and near to the radio operator.
2) If you wish to activate the monitor function when removing the microphone from its bracket (hang-up), connect this to the
negative (ground) of the vehicle.

Place the bracket in a location which makes the microphone cable not taut and avoid that possible rocking of the
microphone could cause it hitting the vehicle’s parts or surrounding objects and get damaged. As well, avoid
placing the microphone in a location where surrounding objects may cause accidental activation of the push to talk
(PTT) button and therefore transmission.
 Neither the standard (MK06/35) nor the keyboard (MK06/35-K) microphones are supplied with the radio; however, installation
of the mount is the same for both. For further details, refer to par. 4.1.b.
5.2 Installation of the vehicular antenna
Install the antenna on the exterior of the vehicle. Installation must be in conformity with the regulations of the
antenna manufacturer, and according to the instructions included with the antenna. Installation must also be in
conformity with general security and local regulations, as well as with those indicated in Chapt. 2.
Contact your vendor for advice on choosing the best antenna for your needs. The antenna must be able to irradiate
at least the nominal power of the radio. Once installed and calibrated, the antenna must have a SWR (Standing
Wave Ratio) as low as possible and at below 1:1.5. SWR should be measured with a suitable instrument once the
antenna is completely installed in an open space.

HM35 Series – User’s Manual
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 When used in a vehicle, the radio offers optimal performance when the antenna is installed at the center of the roof, in a
vertical position that is free of obstacles.
5.3 Connections

A faulty connection (or connection with an unapproved device) can seriously damage the transceiver, as well as
people or objects. For further details, refer to the service manual and/or to the CTE International technical office.
5.3.a Antenna
After verifying the efficiency of the external antenna, connect it to the radio’s Antenna socket (refer to par. 5.2)
using a suitable connector.
5.3.b Power supply
Connect the red/black cable to a 13.8 VDC (+/- 10%) power source. The red terminal connects to the positive; the
black is negative and must be grounded. It is important to verify that the power supply line used is able to support
10 A of continuous current.
5.3.c Connection/Disconnection of the microphone
As previously mentioned, two types of microphones are available for purchase separately:
• Standard microphone MK06/35 – microphone for general use, with push to talk transmission button (PTT) (not supplied).
• Keypad microphone MK06/35-K – includes standard microphone functions, plus variable selective calling (if activated during
programming).
Standard microphone
To connect the microphone, insert the microphone’s RJ plug into the [3] Microphone socket on the front panel of
the radio. To disconnect the microphone, hold down the safety clip on the RJ plug and detach it from the socket
with caution.
Keypad microphone
The keypad microphone MK06/35-K can only be used if the radio has been programmed for its activation, as per the
following instructions. If it has not been programmed, the command described below will not be accessible.
1) Press the menu/↵button to access the command menu, then press the buttons repeatedly until the Lcd&Keypad
menu is highlighted.
2) Press the menu/↵again to view the available sub-menus.
3) Press the or button repeatedly until the Keypad Micr. sub-menu is highlighted, then press menu/↵to confirm. A
will appear beside the sub-menu to indicate that the keypad microphone is active.
4) Exit the sub-menu by pressing the F4/ESC button, then press it a second time to exit the main menu and return to the standby
screen.

This procedure should be followed the first time you use your microphone. If you are using the standard microphone, ensure
the is disabled by following the above procedure.
To connect/disconnect the MK06/35-K keypad microphone, follow the same procedure as described for the standard
microphone.
5.3.d External speaker (optional)
If you possess an external speaker, connect it to the Input/Output [10] connector found on the rear panel of the
device, referring to Chapt. 13 and to the instructions supplied with the speaker itself. The external speaker must be
8 Ohm and able to support a minimum of 12 W of power.

The output of the external speaker is grounded. Be careful not to create short-circuits with the body of the vehicle.
 The transceiver can be programmed so the external speaker is excluded and only the internal one is used. For further details,
refer to par. 8.4.

HM35 Series – User’s Manual
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6 BASIC OPERATIONS
IMPORTANT! One or more functions among those described from this point onwards can be rendered
inactive by your radio network administrator, and depending on the radio’s programming. For this reason,
you may find you are not able to access one or more of the functions, or that some functions may differ
from the below descriptions.
Furthermore, it is possible that one or more functions can be activated via the function keys F1, F2, F3 or
F4/ESC, rather than via the normal command menu. In this situation, you will see the (abbreviated) function
written directly above the button to which the function has been assigned (in other words, on the bottom
part of the display).
For further details or when in doubt, contact your vendor/radio network administrator. For information
regarding the use of menu commands and function keys, refer to Chapt. 7.
6.1 Turning HM35 on/off
To turn on the radio, turn the On/Off-Volume knob clockwise until you hear a click.
A welcome message, including the version of software currently installed, will appear on the display.
The radio will automatically carry out a self-test, and will emit a beep to confirm start-up.
To turn off the radio, turn the On/Off-Volume knob counter-clockwise until you hear a click and the display turns off.
6.2 Volume adjustment
To increase volume, turn the On/Off-Volume knob clockwise.
To decrease volume, turn the knob counter-clockwise.
6.3 Channel selection
To select a channel, press the button to scroll through channels upwards or to scroll downwards.
6.4 Reception
There are three reception modes:
• Open traffic – this mode allows the user to listen to all communication transmitted on the selected channel and volume.
• CTCSS/DCS - if programmed, allows the user to listen only to communication coming from other members of the network with
the same CTCSS/DCS tone/code. For further details, refer to Chapt. 9.
• Selective call - allows the user to send and receive calls from a user or group.
When you receive a valid selective call, the status LED will flash orange and an audio signal will alert you to the
incoming call. For further details, refer to Chapt. 9.
 CTCSS/DCS and Selective Call may be combined together.
 CTCSS/DCS and Selective call allow for sharing of the same frequency on multiple radio networks.
6.5 Squelch adjustment
Your transceiver is equipped with a device able to suppress background noise when no signal is being picked up.
You can regulate the threshold of device activation.
1) Press the
menu/↵button to access the command menu, then use the buttons to highlight the Radio Param option.
2) Press the menu/↵button once more to view the available sub-menus, then until the sub-menu Squelch (adjustment
of squelch levels) is highlighted.

HM35 Series – User’s Manual
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3) Press menu/↵to access the sub-menu. SQUELCH will appear on the display, and a horizontal bar will show the level of
squelch intervention currently being used.
4) Hold down the button until the background noise is continuous.
5) Now press the button to gradually increase the level of squelch intervention, stopping as soon as the noise disappears.
6) Wait for a few seconds to ensure the noise has disappeared stably.
7) Exit the sub-menu by pressing the F4/ESC button, then press it a second time to exit the main menu and return to the standby
screen.
 Be careful not to set the squelch level too high: you may not be able to receive weak signals.
6.6 Monitor
The monitor function is mainly used for two purposes:
• To allow for reception of extremely weak signals.
• To temporarily disable the CTCSS/DCS and/or selective calling to allow you to listen to all communications on the tuned
channel, including those outside your network.
 Each time the monitor function is activated, will appear on the display.
6.6.a Monitor from the menu
1) Press the menu/↵button to access the command menu, then use the buttons to highlight Radio Param (radio
parameters) from the menu.
2) Press menu/↵to view the sub-menus available and until the Monitor sub-menu is highlighted.
3) Press
menu/↵to insert beside Monitor. This indicates that the monitor function is active.
4) Exit the sub-menu by pressing the F4/ESC button, then press it a second time to exit the main menu and return to the standby
screen.
6.6.b Monitor using the microphone
If the monitor function has been activated (hang-up), you will activate it each time you remove the microphone from
its mount.
6.7 Transmission
1) Remove the microphone from its mount.
2) Ensure the channel is unoccupied (otherwise you will create interference), and verify the status LED is off or flashing orange.
3) Hold down the push to talk (PTT) button on the hand-held microphone. The status LED [8] to the right of the display will light
up in red to confirm that you are transmitting.
4) Speak in a normal voice approximately 5 – 10cm from the microphone.
5) Release the PTT at the end of the call, ensuring the status LED is no longer lit.
6) At the end of the conversation, hang the microphone back up on its mount.
 Begin speaking only after having pressed the PTT button and do not release it until you have finished speaking, otherwise all
or part of your message will not be transmitted.

Do not yell! This does not increase the distance of transmission; rather, your words come across as distorted.
 Normally, a transceiver will not allow you to send and receive simultaneously, so when you are speaking, others will not be
able to do so. Send your message within a reasonable time period so as not to occupy the channel for very long.
 Consult the following paragraphs for information on correct transmission.
6.7.a Time Out Timer (TOT)
The radio can be programmed with an internal TOT (Time Out Timer), which automatically forces your radio into
reception mode if you have been speaking for too long (time for this is determined in the programming phase). If
this happens, release the transmission button and wait for a few seconds: the transmission functions of the radio will
be automatically restored. For further information, contact your vendor or network administrator.

HM35 Series – User’s Manual
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6.7.b Busy Channel Lock Out (BCLO)
Activation of this function impedes the use of the PTT button when the channel is busy.
Depending on the programming, the BCLO can act when it picks up any signal, or when a signal is coming from a
specific CTCSS/DCS signal.
 This setting is not available by the end user. For further details, please contact your radio network administrator.
6.7.c Selecting transmission power
Your transceiver can transmit with two different power levels, which are predefined during programming, channel by
channel. The display will always show the power selected, using the following icons:
• - high power
• - low power
1) Press the
menu/↵button to access the command menu, then use the buttons to highlight the Radio Param option.
2) Press menu/↵to view the available sub-menus.
3) Press the buttons until the sub-menu Power is highlighted. The display will show the power level currently selected:
Hi (high power) or Lo (low power).
4) Press menu/↵to select the desired power level.
5) Exit the sub-menu by pressing the F4/ESC button, then press it a second time to exit the main menu and return to the standby
screen.

HM35 Series – User’s Manual
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7 USE OF COMMANDS/OPTIONS
7.1 How to navigate the command menu
Refer to the following diagram.
1) Pressing the menu/↵button once opens the command menu and displays the five main menus:

Radio Param – settings/activation of primary radio parameters

Calls – emission of selective calls

Scan – performs scanning functions

Home Chan – recall of home channel (your most frequently used channel)

LCD&Keypad – settings for display and keypad

Switches – activates switching for various options
2) Press the buttons to scroll through main menus and highlight the desired menu.
3) Press the menu/↵button to access the menu and view the available sub-menus.
4) Press again to scroll through the sub-menus and highlight the desired one:

If you have selected an adjustment (e.g. squelch level), press the menu/↵button to access the sub-menu and use the
to make changes.

If you have selected an option with two values (e.g. high or low output power), you can switch from one value to another by
pressing the menu/↵button.

If you have selected an option (activate or deactivate), a will appear on the display when the option is activated.
Insert/remove the symbol by pressing the menu/↵button.

If you have selected a selective call, begin transmission by pressing the menu/↵button.
5) If necessary, confirm the change once more with the menu/↵button (e.g. in the case of variable selective calls)
6) Exit the sub-menu by pressing the F4/ESC button, then press it a second time to exit the main menu and return to the standby
screen.
 You can exit the menu/sub-menu at any time, without changing settings, by pressing the F4/ESC button.

The main menu Home Chan has a sole purpose of recalling the priority channel; therefore, it does not have a sub-menu.
menu/↵ to access thecommand menu
menu/↵ to access the highlighted menu
Change value of
parameter (e.g. Hi or Lo)Access changefunctions
menu/↵
Send selective call
insert/remove
(activate/deactivate)
to highight the main menu
to highlight the sub-menu
to make changes

HM35 Series – User’s Manual
Rev. 2.0 on 1 March 2004 Page 17 of 32
7.2 Summary table for the command menu
The following table summarizes the functions of each sub-menu/setting available on your radio. Each sub-
menu/setting will be explained in detail, and its location can be found by referring to the last column of this table.
SUMMARY TABLE FOR COMMAND MENU
Main Menu Sub-menu Brief Description Type of command or
Value available See Par:
Monitor Temporary exclusion
Squelch/CTCSS/selective calling if monitor is activated 6.6
Squelch Squelch regulation (suppression of
background noise in standby) Bar indicator 6.5
Power Output power setting Hi (high) / Lo (low) 6.7.c
Lock/Dist Reception sensitivity attenuator L(activated) / D(deactivated) 10.4
TlkAround Allows for single-frequency communication at
repeater output (in case of breakdown) if Talk Around is activated 10.5
Mic.Sens. Regulation of microphone sensitivity Lo (low) / Hi (high) 8.1
Scrambler Activation of optional scrambler board (if
installed) if the scrambler is activated 10.6
Radio Param
Int.Spkr
Off Deactivation of internal speaker if the speaker is deactivated 8.4
Call 1 Send fixed selective call - Call 1 Press menu/↵to send immediately
Call 2 Send fixed selective call - Call 2 Press menu/↵to send immediately 9.2.b
User Call Send variable user-defined selective call Typing variable digits on the keypad
microphone 9.2.c
Calls
Emergency Send Emergency selective call Press menu/↵to send immediately 9.2.d
Scanning Start scanning (searches for signals on
programmed channels) Press menu/↵to start immediately 10.1.a
Scan Esc Temporary pause in scanning Immediate pause 10.1.c
Chan Del Temporary exclusion of one or more channels
from scanning Immediate exclusion with menu/↵–
Chan Del 10.1.b
Scan
Edit List Modification of scanning list and of priority
channel Modified using the function keys 10.1.d
Home Chan Rapid recall of most commonly used channel Immediate activation (no sub-menus) 10.2
Contrast Adjustment of display contrast Bar indicator 8.2
Light Display backlighting On = activated, Auto = automatic,
and Off = deactivated) 8.3
Keypad
Micr. Activation of microphone with keypad
MK06/35-K if MK06/35-K activated 5.3.c
Lcd&Keypad
Pad Lock Lock keypad microphone MK06/35-K if keypad is locked 10.3
PA Activation of audio amplifier with external
speaker if PA is activated 10.7
Aux.Out Activation of auxiliary output switching if contact is activated 10.8
Switches
Alarm Activation of rear output connector upon
reception of a valid selective call if alarm is activated 10.9

The main menu Home Chan has a sole purpose of recalling the priority channel; therefore, it does not have a sub-menu.
 During the programming phase, one or more sub-menus may have been disabled and therefore not accessible. Contact your
radio network administrator for further information.
 Some functions or sub-menus may have been assigned to the F1, F2, F3, and F4/ESC function keys. Contact your radio
network administrator for further information.

HM35 Series – User’s Manual
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7.3 Menu diagram
7.4 Meanings of display icons
Icon Meaning See par:
Monitor is activated 6.6
Signal received contains correct CTCSS/DSC
Signal received contains a valid selective call 9.1
Scanning of active channels 10.1.a
Scanning is temporarily paused 10.1.c
Home channel was called 10.2
Lock on keypad microphone MK06/35-K is activated 10.3
Talk Around function is activated 10.5
Scrambler activated 10.6
PA activated 10.7
Auxiliary output is activated 10.8
External alarm is activated 10.9
High transmission power
Low transmission power 6.7.c
Receiver sensitivity attenuator deactivated (Distant) – maximum sensitivity of receiver
Receiver sensitivity attenuator activated (Local) – reduced sensitivity of receiver 10.4
7.5 Meaning of function key icons.
Each function key is assignable. The table here below summarizes the meaning of the icons displayed once a
function key is pressed. This section not found in PDF version.
Icon Description
Sends fixed selective call - Call 1
Sends fixed selective call - Call 2
Sends variable user-defined selective call
mon Monitor is activated
Alarm is activated
scan Starts scan
Interrupts scan
Cancels a channel from the scan list
Shows the scan list
Activates PA function (public address)
Activates talk around function
Radio Param SwitchesScan Lcd&KeypadCalls
menu/↵
Monitor
Squelch
Power
Loc/Dist
TlkAround
Mic.Sens.
Scrambler
Int.Spkr Off
Call 1
Call 2
User Call
Emergency
Scanning
Scan esc
Chan Del
Edit List
Contrast
Light
Keypad Micr.
Pad Lock
PA
Aux.Out
Alarm
Home chan

HM35 Series – User’s Manual
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Activates scrambler
Locks the keypad of the keypad mike (MK03535-K)
sql Activates the regulation of squelch level
Adjusts contrast
Adjusts brightness
Activates auxiliary output
Sends a call to the priority channel
l/d Activate/ deactivates local/distance mode
Adjusts microphone sensitivity
pow Selects high/low power
Key not assigned
Deletes a channel from the scan list
Inserts a channel in the scan list
Sends an emergency call
Activates the MK0635-K mike
Displays the predefined messages
Agenda

HM35 Series – User’s Manual
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8 CUSTOMIZATION
This section describes the settings that regulate various parameters, depending on environment and specific use of
the radio; for example, display contrast, backlighting, etc.
8.1 Adjustment of microphone sensitivity
Normally, the sensitivity of the microphone allows the user to speak at a distance of up to 10 centimeters from the
microphone. However, if the surroundings or the vehicle in which you are working is particularly noisy, you can
reduce the sensitivity of the microphone so as to avoid transmitting your surrounding noises to others. When the
sensitivity is decreased, you need to speak closer to the microphone and/or with a louder voice, but your message
will still be heard clearly. To adjust the microphone sensitivity:
1) Press the menu/↵button to access the command menu, then use the buttons to highlight the Radio Param option.
2) Press menu/↵to view the sub-menus available.
3) Press the buttons until the Mic. Sens. (microphone sensitivity) sub-menu is highlighted. The display will show Lo
(low sensitivity) or Hi (high).
4) Press menu/↵if you wish to change the setting from Lo to Hi or vice-versa.
5) Exit the sub-menu by pressing the F4/ESC button, then press it a second time to exit the main menu and return to the standby
screen.
8.2 Adjustment of display contrast
Depending on your ambient light and temperature, you may wish to change the display contrast for a better view of
the screen. To change the contrast:
1) Press the
menu/↵button to access the command menu, then use the buttons to highlight the Lcd&Keypad option.
2) Press menu/↵to view the sub-menus available.
3) Press the buttons until the Contrast (adjustment of display contrast) sub-menu is highlighted, then press menu/↵
to enter the setting. CONTRAST will appear on the display, and will show a series of horizontal bars proportional to the
contrast currently selected.
4) Press the or buttons repeatedly until the desired contrast level appears.
5) Press menu/↵to confirm the contrast level setting.
6) Exit the sub-menu by pressing the F4/ESC button, then press it a second time to exit the main menu and return to the standby
screen.
8.3 Backlight adjustment
This command is for setting display and keypad backlight adjustment and auto-adjustment as follows:
1) Press the menu/↵button to access the command menu, then use the buttons to highlight the Lcd&Keypad option.
2) Press
menu/↵to view the sub-menus available.
3) Press the buttons until the Light (backlighting) sub-menu is highlighted. The display will show:
 On – backlight always activated
 Auto – backlight is automatic - will activate as soon as you use any command, and will deactivate approximately 20
seconds after the last command is given.
 Off – backlight deactivated
4) Press the menu/↵button repeatedly until the desired setting is selected.
5) Exit the sub-menu by pressing the F4/ESC button, then press it a second time to exit the main menu and return to the standby
screen.