Kenwood TM-701A / TM-701E

Thank You

Thank you for purchasing this new transceiver.

IMPORTANT: Please read this instruction manual carefully before placing your transceiver in service.

SAVE THIS INSTRUCTION MANUAL.

CAUTION:

Long transmission or extended operation in the Hi power mode might cause the rear of this transceiver to get warm. Do not place the transceiver where the heat sink (rear panel) might come in contact with plastic or vinyl surfaces.

Models Covered by this Manual

• TM-701A: 144/440 MHz FM DUAL BANDER (U.S.A. version)
• TM-701A: 144/430 MHz FM DUAL BANDER (Other market)
• TM-701E: 144/430 MHz FM DUAL BANDER

The following explicit definitions apply in this manual:

• Note: If disregarded, inconvenience only, no risk of equipment damage or personal injury.
• Caution: Equipment damage may occur, but not personal injury.

Contents

1. BEFORE OPERATION
2. SPECIFICATIONS and ACCESSORIES
3. INSTALLATION INSTRUCTIONS
4. OPERATION
5. MAINTENANCE
6. IN CASE OF DIFFICULTY
7. OPTIONAL ACCESSORIES

1. BEFORE OPERATION

TO PREVENT ELECTRIC SHOCK, FIRE AND OTHER INJURY. PLEASE NOTE THE FOLLOWINGS:

To avoid risk of electric shock, under no circumstances should the unit be opened:

[Diagram: Warning symbol indicating the unit should not be opened to avoid electric shock.]

Do not place this unit, where it will be exposed to direct sunlight or close to heating appliances.

[Diagram: Illustration showing a transceiver with symbols for sunlight and a heater, indicating these locations should be avoided.]

To ensure good ventilation, do not put anything on top of the cabinet and allow at least 15 cm (6 inches) of space behind the unit.

[Diagram: Illustration showing proper ventilation for the transceiver, showing ample space around the unit and airflow.]

The power requirement is 13.8 VDC. Never attempt connection to a 24 VDC source.

[Diagram: Illustration showing two DC voltage sources, one 13.8V (acceptable) and one 24V (unacceptable) with a prohibition symbol.]

Do not pull the power cord, when disconnecting it from the AC wall outlet. Grasp the plug and ensure that your fingers do not touch the live pins.

[Diagram: Illustration demonstrating the correct way to unplug a power cord by grasping the plug, not the cord itself, to avoid electric shock.]

Do not place the unit in areas of excessive dust, high humidity or on unstable surfaces.

[Icons representing dust, humidity, and an unstable surface, indicating environments to avoid for the transceiver.]

If an abnormal odor or smoke is detected, immediately turn the power off and pull out the power plug. Contact the KENWOOD service station or your dealer.

[Illustration of a transceiver emitting smoke, with a person unplugging it, indicating immediate action for abnormal conditions.]

Do not drop pieces of metal, needles, coins and other electrically conductive materials into the unit.

[Diagram showing various metallic objects (needle, coin, screw) with a prohibition symbol, indicating they should not be inserted into the transceiver.]

Do not touch the power plug, when your hands are wet.

[Illustration of a wet hand touching a power plug with a prohibition symbol, warning against this action.]

CLEANING

1. Turn the power off, before cleaning the unit.
2. Do not use any type of abrasive pad, thinner, benzine or any substances which may damage the unit.
3. Wipe the front panel and other exterior surfaces of the unit with a soft dry cloth or a soft cloth lightly moistened with water.

2. SPECIFICATIONS AND ACCESSORIES

2-1. SPECIFICATIONS

Notes:

1. Circuit and ratings are subject to change without notice due to advancements in technology.
2. Recommended duty cycle: 1 minute Transmit, 3 minutes Reception.

2-2. ACCESSORIES

Unpack your new transceiver carefully and examine it for visible damage. If the equipment has been damaged in shipment, notify the transportation company immediately. Save the boxes and packing material for future shipping.

The following accessories should have been included in the box with the transceiver:

• MC-44DM DTMF Microphone (U.S.A. only): T91-0380-X5.....1 ea.
• Microphone or Microphone (European version): T91-0379-X5.....1 ea.
• Microphone Hook (U.S.A. only): J20-0319-24......1 ea.
• Self Tapping Screw (U.S.A. only): N46-3010-46.....2 ea.
• Mobile Mounting Kit (1 ea.):
• Bracket: J29-0436-03......1 ea.
• Stack Plate: J21-4147-14......2 ea.
• Mounting Screws: N99-0331-05..... 1 ea.
• SEMS Screw: 4 ea.
• Self Tapping Screw: 4 ea.
• Flat Washer: 4 ea.
• Wrench: W01-0414-04 .... 1 ea.
• DC Power Cable: E30-2111-05 .....1 ea.
• Fuse (8A): F05-8021-05......1 ea.
• Instruction Manual: 850-8269-XX..1 copy
• Warranty Card (U.S.A. and European version): 1 ea.

3. INSTALLATION INSTRUCTIONS

3-1. INSTALLATION

Mounting Bracket

When installing the transceiver in your vehicle consider the ease of operation and safety when selecting the location for the mounting bracket.

1. Install the bracket using the flat washers and self tapping screws that were supplied with the transceiver. (4 Pieces ea.)
2. Attach the transceiver loosely using the 4 SEMS screws that were supplied.
3. Align the grooves in the bracket with the transceivers screws (Fig. A) and slide the transceiver to the rear.

Fig. A: Diagram showing how to align the transceiver mounting bracket with the transceiver's screws.

4. Adjust the viewing angle of the bracket to the desired position. (Fig. B)

Fig. B: Diagram illustrating the adjustment of the transceiver's viewing angle using the mounting bracket.

5. Hold the transceiver in place and tighten the 4 SEMS screws, using the wrench supplied with the mounting kit.

3-2. CONNECTION

3-2-1. Mobile Installations

Cautions:

1. Before installing the power cable disconnect the negative lead from the battery for safety.
2. After installation and wiring have been completed go back and check your work to ensure that you have not made any errors, before you reconnect the negative battery lead.
3. If the fuse opens be sure to check that each conductor is undamaged, then replace the fuse with one of the same rating.
4. After completing the wiring, wrap the fuse holder with heat resistant tape to protect against heat and moisture.
5. Do not remove the fuse even if the power cable is too long.

A. Battery Connections

Connect the power cable directly to the battery terminals. Use of the cigarette lighter socket will lead to a poor connection, and will result in poor performance. Pay close attention to the polarity of the cables when connecting them to the battery. Remember Red is positive and black is negative!

[Diagram illustrating the connection of the power cable to a vehicle battery, showing positive (red) and negative (black) terminals, fuse placement, and routing through the firewall.]

B. Ignition Noise

This transceiver has been designed to suppress ignition noise, however, you may occasionally encounter an installation where the use of suppressor type plugs might be called for.

3-2-2. Fixed Station

A regulated DC power Supply (13.8 VDC) capable of supplying at least 7 Amperes is required. The PS-430 or the PS-50 are recommended.

CAUTION:

1. Never connect the AC power cable of the power supply to the AC outlet until all other connections have been made.

3-2-3. Antenna

The type of antenna that is used will greatly affect the performance of the transceiver. Use a properly adjusted antenna, of good quality, to enable your transceiver to perform at its best. The antenna input impedance is 50 ohms. Use 50 ohm coaxial cable such as RG-8U or 8D-2V for this connection. If the antenna is far from the transceiver the use of low loss cable is recommended. Match the impedance of the coaxial cable and that of the antenna so that the SWR will be less than 1.5 to 1. The protection circuit in the transceiver will activate if the SWR is particularly poor (greater than 3 to 1). High SWR values will cause the transmitter output to fall off and may lead to TVI or BCI reports.

CAUTION:

We recommend that you install a high quality lightening arrestor in your antenna lines for protection against fire, electric shock, personal injury, or damage to the radio itself.

4. OPERATION

4-1. CONTROL FUNCTIONS

POWER switch: Press to turn the transceiver ON or OFF.

Tuning control: This control is used to select the desired transmitter/receiver frequency, Memory Channel, Frequency Step, Tone Frequency, Scan Direction, etc.

VOL control: This control is used to adjust the volume from the Internal and external speaker (if used). Clockwise rotation will increase the volume and counterclockwise rotation will decrease the volume.

SQL (Squelch) control: This control is used to select the desired squelch threshold level.

LOW/DIM key:

• LOW: This function is used to select the transmit output power level (HI, or LOW).
• DIM: This function is used to select the intensity of the front panel display illumination. It is used in conjunction with the F key, i.e. press the F key and then the LOW/DIM key to alternate between High and Low display intensities.

Microphone connector: Attach the supplied microphone to this connector. The pin out of the connector is described in the accompanying illustration.

[Diagram showing the pinout of the 8-pin microphone connector, labeling pins 1 through 8 with functions like GND, MIC, PTT, RX Audio Output, and 8 VDC.]

4-1.1. VFO key

This key is used to return to VFO operation after operating in the MR or CALL channel mode. Pressing this switch will allow the tuning control and microphone UP/DWN keys to increase or decrease the operating frequency.

Press and hold the key for longer than 1 second to initiate VFO scan. Pressing the key after scan has been initiated will cause scan to stop.

Pressing the key within 10 seconds of pressing the F key will copy the memory channel or call channel data to the VFO. This allows you to change parameters of that channel without actually changing the data that has been stored in memory.

Pressing the F key for longer than 1 second and then pressing the VFO key will cause radio to toggle the hold/resume mode between Time Operated scan and Carrier Operated scan.

If you press and hold the VFO key while you turn on the POWER switch you will reset the microprocessor's VFO memory, without destroying the memory channel or call channel data.

4-1.2. MR key

This key is used to select MR (Memory Recall) mode from the VFO mode. The tuning control can then be used to select the desired Memory channel.

• Pressing the key for longer than 1 second will initiate memory channel scanning.
• Pressing the key within 10 seconds of pressing the F key will store the displayed data into memory.
• In the MR channel mode pressing the F key for longer than 1 second and then pressing the MR key will cause the Memory channel to skip during Memory channel scan mode.

If you hold and press this key while you turn on the POWER switch you will clear all the microprocessor's, operator programmed, memory section.

4-1.3. MHz key

This key is used to tell the microprocessor that you wish to increase or decrease the operating frequency in 1 MHz increments.

Pressing this key within 10 seconds of pressing the F key will cause the key lock function to activate, protecting the currently displayed data from accidental erasure.

4-1.4. Call key

Press this key to activate the call channel function. Press the F key momentarily and then press the CALL key to store the currently displayed data into the CALL channel. The radio will allow you up to 10 seconds to press the CALL key after pressing the F key.

Press the F key for longer than one second so that the F indicator begins to flash. Then press the CALL key to enter the lower limit for the programmable VFO tuning limit function. If you wait longer than 10 seconds to press the CALL key after the F begins flashing the microprocessor will assume that you pressed the key in error and cancel the function. You will have to start over again if the F indicator turns off.

To operate the transceiver with the RC-10 press and hold the CALL key on the transceiver and then turn on the POWER switch.

4-1.5. SHIFT/AL key

• SHIFT function: Pressing this key alone to select the desired transmitter offset direction. Pressing the key will cause the radio to shift from one offset direction to the other, i.e. "+" to "-" to simplex where no indicator shows. ("-" to "-" for European versions (UHF Band))
• AL function: ALERT PRIORity-CH 1. Pressing the F key momentarily and then pressing the SHIFT/AL key will cause the radio to activate the Priority Alert function. When this function is active the radio will scan the contents of memory channel 1 at approximately 5 second intervals. If there is activity on the frequency a beep will sound from the speaker. Pressing the same key sequence again will cancel the function.

Pressing the F key for longer than 1 second and then pressing the SHIFT/AL key will store the currently displayed data as the upper limit for the programmable VFO tuning limit function.

4-1.6. TONE/T.ALT key

Pressing this key by itself causes the radio to select the desired tone signalling mode. When the "T" indicator is illuminated in the display the transceiver will transmit the selected subaudible tone. When the "CTCSS" indicator is illuminated the transceiver will both transmit the subaudible tone and will also remain squelched until the proper subaudible tone is received.

If you press the F key momentarily and then press the TONE/T.ALT key the T. ALT function will be activated. This function will cause the radio to emit a series of beeps when an incoming signal is received that will open the squelch. The function will work with or without the CTCSS option installed.

TONE frequency selection

Pressing the F key for longer than one second and then pressing the TONE/T.ALT key will allow you to select the desired tone frequency. The display will indicate the current Tone frequency. To change to a different tone frequency rotate the tuning control or press the UP/DWN switches on the microphone until the desired tone frequency appears in the display. To return to the normal frequency display you can press any front panel key except the power switch.

The following are the available tone frequencies:

Note: 97.4 Hz is available for tone encode only.

4-1.7. REV/STEP key

• REV/STEP key: This key is used to reverse the transmit/receive frequencies during repeater operations. If you have selected simplex this key will not function.
• Pressing the F key momentarily and then the REV/STEP key will allow you to select the desired VFO tuning step and Scan step size. Use the tuning control to select the desired tuning step and then press any front panel key except the POWER switch to return to the normal frequency display.
• Pressing the F key for longer than 1 second and then pressing the REV/STEP key will turn the BEEP function OFF or ON.

4-1.8. BAND/DUP key

• This key is used to change bands.
• Pressing the F key momentarily and then the BAND/DUP key will cause the duplex function to activate.

4-1.1. LCD DISPLAY PANEL

The LCD display panel shows various indicators and information:

• 88.8.8.8.8.5 88: Displays the operating frequency to the nearest kHz digit; the frequency step size; or the tone frequency.
• BUSY indicator: Flashes when scanning.
• BUSY: On when the squelch opens.
• Level meter: Indicates the relative receiver signal strength or the relative transmitter power output.
• ① LOCK: On when the LOCK function has been activated.
• +: Displays the selected transmitter offset direction. (European version)
• ③ REV: On when the Reverse function has been activated.
• ④ AL: On when the Priority Alert function has been activated.
• ⑤ T / CTCSS: On when the Tone Encode function is active. On when the Tone Decode function is active.
• ⑥: On when the Tone Alert function is active. The indicator flashes when an incoming signal has opened the squelch.
• ⑦: On whenever the F key has been depressed. Also shows the last memory channel number that had been selected.
• ⑧: The indicator is on whenever the displayed memory channel will be skipped during memory scan operations.
• ⑨ ONAIR: On during transmit.
• ⑩ D: On during duplex operations.
• ⑪ LOW: Indicates the relative output power setting for transmit. No indicator indicates full power.

[Diagram of the transceiver's LCD display panel, with numbered indicators and their corresponding functions explained in the text.]

4-2. RECEIVER OPERATIONS

Audio confirmation is provided whenever a front panel key is depressed. You can disable this function by pressing the F key for longer than 1 second and then pressing the REV/STEP key.

4-2-1. RECEPTION

1. Connect the power supply, antenna, and microphone and then adjust the controls as follows:
• Power Switch: OFF
• Vol Control: Full Counterclockwise
• Power switch of power supply (Fixed Station): OFF
• SQL Control: Full Counterclockwise

[Illustration showing example frequency displays on the transceiver for U.S.A. and European versions.]

2. Turn on the Power Supply and then turn on the transceiver's POWER switch. The display should indicate a frequency. Fig. 1 shows examples of frequencies that will appear on the various models. In addition to the frequency you may see one or more control indicator turn on in the display.

4-2.2. Frequency Selection

You can change the dial frequency while in the VFO mode. The frequency can then be also be stored in memory, or in the call channel using the techniques that will be described in this manual.

To select another band press the BAND key momentarily. In the MR mode if a channel has no data of the band the band can not be selected.

[Diagram illustrating the selection of VFO mode, Memory Channel mode (MR), and Call Channel mode using the respective keys.]

• VFO Mode Operation Frequency Selection
  1. Press the VFO key to select the VFO mode.
  2. Rotate the tuning control or press the microphone UP/DWN switches to select the desired frequency.
• Memory Channel Selection
  1. Press the MR key.
  2. Rotate the tuning control or press the microphone UP/DWN switches to select the desired memory channel.
• CALL Channel Selection
  1. Press the CALL key to select the Call channel.

4-2.3. Frequency Step Selection

The frequency step is indicated in the chart below.

4-2.4. Programmable VFO tuning limits

The radio provide the capability of programming the VFO tuning range, in 1 MHz band segments, as well a providing a separate programmable band scan function (See section 4-5). For example you could tell the transceiver that you only wish to tune the 144.000 MHz and 145.000 MHz band segment by specifying any frequency with these two segments. The tuning controls, microphone UP/DWN switches would then only tune within these specific bands. The procedure for specifying the bands is described below.

1. Press the VFO key to select the VFO mode.
2. Rotate the tuning control or press the microphone UP/DWN switches until the desired lower tuning range appears in the frequency display. For example you might want to select the 144 MHz band, and dial up 144.100 MHz.

[Illustration showing the frequency display and a flashing 'F' indicator, indicating the start of programming.]

3. Press the F key for longer than 1 second. The F indicator should begin flashing.
4. Press the CALL key within 10 seconds. A long beep will sound and the F indicator will turn off in the display. This indicates that the lower limit has been successfully stored in memory.
5. Now select the desired upper tuning limit using the MHz key and tuning control, or microphone UP/DWN switches. With our example we want the upper band limit to be in the 145 MHz band, and therefore dial up 145.100 MHz.
6. Press the F key for longer than 1 second. The F indicator will again begin flashing.

[Illustrations showing the frequency display during programming steps, including flashing 'F' indicators and indicators for successful storage.]

7. Press the SHIFT/AL key within 10 seconds. A long beep will sound and the F indicator will turn off in the display. This indicates that the upper limit has been successfully stored in memory.

To confirm that the programming was properly performed rotate the tuning control or press the UP/DWN switches. The transceiver should not go above or below the programmed band limits.

To clear both programmed limits simultaneously you should initialize the VFO memory using the procedures discussed on page 10. You can reprogram either limit independently by following the appropriate instructions above.

4-3. TRANSMITTER OPERATION

Cautions:

1. Ensure that an antenna with a low standing wave ratio (SWR) is attached to the antenna connector before attempting to transmit. Failure to provide proper termination may result in damage to the final amplifier section.
2. Always check to ensure the frequency is clear before transmitting.

The use of LOW power is recommended, whenever possible, to avoid interfering with other stations.

4-3.1. Transmit Basics

1. Select the desired operating frequency using any of the methods previously discussed.
2. Check the frequency to see if it is occupied before you transmit.
3. Press the PTT switch. The ON AIR indicator will light, and the RF meter will deflect to the right.

If you have selected the LOW power position, the low indicator will appear in the display and the RF meter will only deflect slightly. When HI power has been selected the RF meter will swing full scale.

[Illustration showing the RF meter deflecting to indicate transmit power, with indicators for HIGH and LOW power settings.]

4. Speak into the microphone. The recommended distance to the microphone is 5 cm (2 inches).

Talking closer may result in overdeviation of your transmit signal, which might be reported as a loss of clarity or of an excessively wide transmit signal. Talking too far away may result in reports of weak audio.

5. Release the PTT switch to return to the receive mode. The ON AIR indicator should go out, and the RF meter will return to zero.

4-3.2. Duplex Operation

Pressing the PTT switch on the microphone allows simultaneous receive on a UHF (or VHF) and transmit on the other band.

Some combinations of receive and transmit frequencies might cause a reduction in receiver sensitivity.

VFO mode

1. Select the desired VHF transmitter frequency.
2. Press the BAND key and select the desired UHF receive frequency.
3. Press the F key momentarily, and then press the BAND/DUP key. The D indicator will turn on in the display to remind you that duplex operation has been activated.
4. Press the PTT switch. The ON AIR indicator, and the VHF transmitter frequency will appear in the display.

MR mode

1. Select the desired VHF transmitter Memory channel.
2. Press the BAND key and select the UHF receive Memory channel.
3. Press the F key momentarily, and then press the BAND/DUP key. The D indicator will turn on in the display.
4. Press the PTT switch. The ON AIR indicator, and the VHF transmitter frequency will appear in the display.

CALL channel mode

1. Press the CALL key.
2. Press the BAND key to alternate between the two CALL channel display.
3. Press the F key momentarily, then press the BAND/DUP key. The D indicator will turn on in the display.
4. Press the PTT switch. The ON AIR indicator, and the VHF transmitting frequency will appear in the display.

4-4. MEMORY

4-4-1. Microprocessor Memory back-up

A lithium battery is contained in this transceiver to retain memory. Turning OFF the POWER switch, disconnecting the power cable or an intermittent power failure will not erase the memories. The battery life is estimated at 5 years. When the battery has been exhausted erroneous information might appear in the display.

Lithium battery replacement should be performed by an authorized KENWOOD service facility, or your authorized KENWOOD dealer. This equipment contains CMOS circuitry and can be damaged by improper replacement procedures.

4-4-2. Microprocessor Initialization

The initial state of the microprocessor, as delivered from the factory is shown in the chart below.

4-4-3. Special Memory Channels

This transceiver provides 20 Memory Channels. In addition to serving as normal memory channels some of the channels serve a dual purpose and specify other parameters. The functions of these memory channels is described below.

• Memory Channel 1 is used to store the frequency of the Priority Alert function.
• Memory Channel 13 is used to store the lower limit for the VHF Programmable band scan function.
• Memory Channel 14 is used to store the upper limit for the VHF Programmable band scan function.
• Memory Channel 15 is used to store the lower limit for the UHF Programmable band scan function.
• Memory Channel 16 is used to store the upper limit for the UHF Programmable band scan function.
• Memory Channels 17-20 are used to store odd split repeater data.

4-4-4. Memory Contents

Each Memory channel is capable of storing the following information.

4-4-5. Memory Entry

Simple/Normal transmitter offsets

1. Press the VFO key to select the VFO mode.
2. Select the desired operating frequency, offset direction, tone frequency, CTCSS status etc. (For example 146.790 MHz)

[Illustration of the frequency display showing a programmed frequency and a memory channel number.]

3. Press the F key momentarily. The F indicator will turn on in the display, and a memory channel number will appear. (Channel 8 for example)
4. Select the desired memory channel number by rotating the tuning control or by pressing the UP/DWN switches on the microphone. (Channel 5 for example)
5. Press the MR key within 10 seconds of selecting the memory channel number. A long beep will sound and the F indicator and memory channel number will turn off. This signals that the data has been properly stored in memory.

Odd Split Memory Channels

1. Press the VFO key to select the VFO mode.
2. Select the desired receiver frequency, tone information etc. (For example 145.600 MHz)

[Illustrations showing frequency displays during memory entry and odd split memory channel programming, with associated indicators.]

3. Press the F key momentarily. The F indicator and a memory channel number will appear in the display. (Channel 5 for example)
4. Select any memory channel from 17 thru 20 using the tuning controls.
5. Press the MR key within 10 seconds of selecting the memory channel number. A beep will sound and the F and Memory channel indicators will turn off in the display.

4-4.6. Memory Channel Recall

When recalling a memory channel using this procedure you will not be able to adjust the frequency or tone data. The memory channel acts very much like the old crystal controlled radios, i.e. the data is fixed and cannot be changed by mistake.

1. Press the MR key to select the MR mode. The memory channel indicator will turn on in the display.
2. Rotate the tuning control or press the microphone UP/DWN switches to select the desired memory channel.

4-4.7. Memory Shift

Using this function you can copy the contents of a memory channel or call channel to the VFO without changing the data in memory. This will allow you to change the tone data, or tune normally if you wish.

1. Press the MR key or CALL key to select the appropriate mode.
2. Press the F key momentarily. The F indicator will light.
3. Press the VFO key within 10 seconds of pressing the F key. The F indicators will turn off to signal the data has been successfully transferred to the VFO.

If an Odd Split Memory channel is selected you will only transfer the Receive data. Transmit data will not be copied.

4-5. SCAN

4-5.1. Scan Options

The following scan options are available:

• Band Scan: Scan proceeds over the entire band. This function operates in the VFO mode only.
• Programmable Band Scan: The VHF scan range in this mode is specified in memory channels 13 and 14. The UHF scan range in this mode is specified in memory channels 15 and 16. This function operates in the VFO mode only.
• Memory Channel Scan: Scan proceed thru those memory channels that have data stored and have not been locked out. This function operates the in MR mode only.
• Dual Scan: Scan proceeds alternately between the last VHF and UHF channels that appeared in the display. This function operates in the VFO mode, the MR mode, and the CALL channel mode.

Scan can not use in conjunction with the Tone Alert System.

4-5.2. Hold/Resume Programming

Two type of scan hold/resume have been provided in this transceiver.

• Time Operated Scan: You may prefer that the radio stops on a busy channel and remains there approximately 5 seconds, and then continues to scan even if the signal is still present.
• Carrier Operated Scan: In this mode the radio will stop scanning on a busy channel and remain there until the signal drops out. The radio allows a 2 second delay before it resumes scanning so that you don't loose the station when operators change.

The radio is delivered from the factory in the Time Operated Scan mode. To switch between the two modes use the following procedure.

1. Press the F key for longer than 1 second. The F indicator will flash.
2. While the indicator is flashing press the VFO key. This will toggle the Hold/Resume mode to the Carrier Operated mode.
3. To return to Time Operated mode repeat steps 1 and 2.

4-5.3. Band Scan

To initiate Band Scan

1. Press the VFO key to select the VFO mode.
2. Adjust the Squelch control to the Threshold point.
3. Press and hold the VFO key for longer than 1 second. The MHz indicator will begin flashing to signal the radio is scanning.

[Illustration of the frequency display with a flashing MHz indicator, signaling the start of a band scan.]

4. Scan will begin in an upwards direction. You can reverse the direction of scan by turning the tuning control counterclockwise or by pressing the DWN switch on the microphone. Clockwise rotation of the tuning control or pressing the UP switch will cause the radio to begin scanning upwards again. The tuning step size depends upon the current STEP selection.
5. Scan will stop on a busy channel, i.e. a station that is strong enough to open squelch and turn on the BUSY indicator.
6. You can cancel scan with any front panel key or the microphone PTT switch.

4-5.4. Programmable Band Scan

1. For example UHF band the lower scan limit should be stored into memory channel 15, and the upper scan limit should be stored into channel 16.

CAUTION:

If the frequency in memory channel 15 is equal to or higher than the frequency stored in channel 16 scan will proceed over the entire tuning range of the set, i.e. it will function like the Band Scan previously described.

2. Adjust the SQL control to the squelch threshold point.
3. Press the VFO key to select the VFO mode.
4. Select a frequency between the two programmed scan limits.
5. Press the VFO key for longer than one second. The MHz indicator will begin flashing as a visual reminder the transceiver is scanning.
6. Scan will begin in an upwards direction. You can change the direction of scan by turning the tuning control or by pressing the microphone UP/DWN switches.
7. Scan will stop whenever a signal is received that will open the squelch of the radio.
8. Press the PTT switch or any front panel key to stop scan.

4-5.5. Memory Channel Scan

Memory channel scan can be used to scan the memory channels that contain VHF frequencies only, UHF frequencies only, or all channels (VHF and UHF). Use the following procedures to select the desired scanning method:

1. Adjust the SQUELCH control to the threshold point.
2. Press the BAND key to select either the VHF or UHF band. The band that is selected will determine which memory channels will be scanned. As an example, if the VHF band is selected, only the memory channels that contain a VHF frequency will be scanned.
3. Press the MR key for longer than 1 second. The MHz indicator will begin flashing and the memory channel indicator will indicate the memory channels that are being scanned.
4. If you want to scan the contents of all VHF and UHF memory channels, press the BAND key while scanning is in progress. If you only want to scan the memory channels of the band selected in step 2, do not press the BAND key.
5. Scan will begin at the current memory channel and proceed upwards thru the memory channels. You can change the direction of scan by turning the tuning control or by pressing the microphone UP/DWN switches.

Only those memory channels that have data entered, and that have not been locked out will be scanned.

6. Scan will stop whenever a signal is received that is capable of opening squelch.
7. To cancel scan press the PTT key or any other front panel key.

4-5.6. Dual Scan

• Dual VFO Scan: Press and hold the BAND key for longer than 1 second in the VFO mode. Scan will proceed between the last UHF and VHF VFO frequencies.
• Dual MR Scan: Press and hold the BAND key for longer than 1 second in the MR mode. Scan will proceed between the last UHF and VHF Memory channels.
• Dual Call channel Scan: Press and hold the BAND key for longer than 1 second in the Call channel mode. Scan will proceed between the two Call channels.

To cancel Dual Scan press the PTT switch or any front panel key except the BAND key.

4-5.7. Memory Channel Lockout

This function allows you to specify Which memory channels you wish to scan during the memory channel scan function.

1. Press the MR key to select the Memory Channel Mode.
2. Select the Memory Channel that you wish to skip by turning the tuning control or by pressing the microphone UP/DWN switches.
3. Press the F key for longer than 1 second. The F indicator will begin to flash. Within 10 seconds of pressing the F key press the MR key. A star (*) will appear to the left of the memory channel number. This indicates the Memory channel will be skipped during the Memory Channel scan mode.

[Illustrations showing frequency displays and indicators for memory channel lockout.]

4. Repeat steps 2 and 3 to lock out any other channels you wish to skip.
5. To cancel the lockout, select the desired Memory Channel as described in steps 1, 2 and 3 above. A star should appear to the left of the memory channel number. To cancel the lock out press the F key for longer than 1 second and then press the MR key. The star indicator should turn off.

4-5.8. Priority Alert Function

The priority alert function allows you to monitor memory channel 1 for activity even when you are tuned to a different channel number. When the Priority Alert function has been activated the microprocessor will switch the transceiver to the frequency stored in memory channel 1 once every 5 seconds. The transceiver will determine if a signal is present. If no signal is present the transceiver will return to the original frequency. If a signal is present beep will sound from the speaker to signal the channel is busy. This whole process takes just a fraction of a second, so you will not see the display frequency change. The only thing you will notice is a momentary loss of the signal on the currently displayed frequency. To activate the priority alert function:

1. Ensure the frequency you wish to monitor has been entered into memory channel 1.
2. Adjust the SQL control to the threshold point.
3. Press the F key momentarily, and then press the SHIFT/AL key. The AL indicator will turn on in the display to remind you that this function has been activated.

[Illustrations showing frequency displays and indicators for priority alert function activation.]

4. If a signal is present a beep will be heard from the speaker.

During the period memory channel 1 is being scanned you will not hear voice communications, only the beep will be heard if a signal is present.

5. To turn this function off repeat step 3. The AL indicator should turn off.

4-6. REPEATER OPERATIONS

4-6-1.Transmitter Offsets

All amateur radio repeaters utilize a separate receive and transmit frequency. The receiver frequency may be either above or below that of the transmit frequency. The configuration of most repeater will fall into one of the categories listed below:

Offset Direction

To select the desired transmitter offset direction press the SHIFT key. Each time you press the key the transceiver will advance from one direction to the other, i.e. "+" to "-" (with European versions) to no offset (simplex).

Automatic Offset Selection (U.S.A. version)

The TM-701A U.S.A. version has been programmed according to the standard ARRL (Amateur Radio Relay League) Band Plan with regard to transmitter offset direction. Please see the accompanying chart for addition information on this programming. You can, of course, override this by using the SHIFT key if desired.

145.1 | 145.5 | 146.0 | 146.4 | 146.6 | 147.0 | 147.4 | 147.6 | 148.0

S | - | S + | S - | S | S

S: simplex

4-6-2. Reverse Function

Some repeaters utilize a "Reverse Pair", i.e. the transmit/receive frequencies are exactly the reverse of another repeater. For example repeater A uses 146.000 for a transmit frequency (INPUT) and 146.600 for a receiver frequency (OUTPUT). Repeater B might use 146.600 for a transmit frequency and 146.000 for a receive frequency. It would be inconvenient to have to reprogram the transceiver each time you wanted to use these repeaters.

The REV key allows you to easily reverse the transmit and receive frequencies. To use the REV function press the REV key. The REV indicator will turn on in the display to remind you that you are working a reverse pair.

To return to normal press the REV key again. The REV indicator will turn off.

This function is also useful to check the input frequency of the repeater so that you can determine if you are within range for simplex communications.

4-6-3. Tone and CTCSS operation

Some repeaters require the use of a control signal to activate the repeater. Several different methods are currently in use.

In the United States sub-audible tones are sometimes used. 38 different Sub-audible frequencies are possible. With the use of the optional Sub-Audible tone decoder unit (TSU-6) you will be able to operate in a Tone Operated Squelch Mode. When this option is installed and the CTCSS function has been activated the radio will not open squelch until the proper PL tone is received.

In Europe and the United Kingdom a 1750 Hz tone is used in transmit. Press and hold the microphone 1750 key to transmit with the access tone, you need not press the PTT key.

Since this tone is required in Europe and the United Kingdom a 1750 Hz tone encoder is included with models delivered to these countries.

Tone Frequency Selection

1. Press the F key for longer than 1 second. The F indicator will begin to flash.
2. Press the TONE/T.ALT key within 10 seconds of pressing the F key. The current tone frequency will show in the display.
3. Rotate the tuning control or press the microphone UP/DWN switches to select the desired tone frequency.
4. Press any front panel key to return to the normal frequency display.

Tone/CTCSS Operation

Press the TONE/T. ALT key and select the desired Tone mode. When the T indicator appears in the display the transmitter will transmit the desired tone. When the CTCSS indicator appears in the display the transceiver will transmit the desired tone and will also operate in the Tone Squelch mode, i.e. squelch will not open until the same tone is received as a portion of the incoming receive signal. When no indicator is on the radio will not make use of either tone feature.

The tone frequency of 97.4 Hz is available for tone encode only. No Tone Squelch is possible with this frequency.

4-6-4. Autopatch Operations (U.S.A. versions only)

Some repeaters offer a service known as autopatch. This feature allows you to dial a telephone number from your transceiver and carry out a telephone conversion, much like a care telephone, or cellular telephone. This function requires the use of a DTMF (Dual Tone Multi Frequency) pad. The MC-44DM microphone provides the normal keys you would have on your telephone at home, as well as 4 additional keys, the A, B, C, and D keys. These keys are used for control purposes on some repeater systems. You should check with the control operator of the repeater to see if they offer autopatch services. A chart is provided that lists the various tone frequencies that are generated by the Keypad.

To activate the keypad:

1. Press and hold the PTT key.
2. Press the keys just like you would dial you telephone at home.
3. The transceiver will remain keyed for approximately 2 seconds after you press each number, so you can release the PTT switch without unkeying the transceiver.

Some repeaters will require the use of a special key sequence to activate the Autopatch function. You should check with your control operator for this sequence.

4-7. Tone Alert System

The Tone Alert function will provide an audible "Alarm" to signal when someone is transmitting on the frequency you are monitoring. When used in conjunction with the CTCSS function this would allow the transceiver to act similar to a private pager system!

1. Adjust the SQL control to the threshold point.
2. If you will be using the CTCSS function you should select the proper tone frequency and ensure the CTCSS indicator is on in the display.
3. Press the F key and then the TONE/T.ALT key. The T.ALT indicator will light.
4. When a signal is received that will open squelch the following actions take place:
• The T.ALT indicator will begin to flash.
• The busy indicator will turn on.
• The audio alarm will sound.

[Illustration showing a flashing T.ALT indicator and a bell symbol, indicating the activation of the Tone Alert function.]

When using the CTCSS function the incoming signal must be present for approximately 2 seconds in order for the T.ALT to function properly.

Tone Alert System can not use in conjunction with Scan.

5. The T.ALT function can be released by pressing the F key and then the TONE/T.ALT key again or by pressing the PTT switch while the T.ALT indicator is flashing.

6. MAINTENANCE

6-1. GENERAL INFORMATION

Your transceiver has been factory aligned and tested to specification before shipment. Under normal circumstances the transceiver will operate in accordance with these instruction manuals. All adjustable trimmers and coils in your transceiver has been adjusted at the factory and should only be readjusted by a qualified technician with proper test equipment. Attempting service or alignment without factory authorization can void the transceiver's warranty.

When operated properly, the transceiver will provide many years of service without requiring realignment. The information in this section gives some general service procedures which can be accomplished without sophisticated test equipment.

6-2. SERVICE

Should it ever become necessary to return the equipment to your dealer or service center for repair, pack it in its original box and packing, and include a full description of the problems involved. Also include your telephone number. You need not return accessory items unless directly related to the service problem.

Service note: Dear OM, if you desire to correspond on a technical or operational problem, please make your note short, complete, and to the point, and PLEASE make it readable.

Please list: Model and serial number. The problem you are having.

Please give sufficient detail to diagnose. Information such as other equipment in the station, meter readings and anything else you feel might be useful in attempting diagnosis.

Caution:

Do not pack the equipment in crushed newspapers for shipment. Extensive damage may result during shipment.

Notes:

1. Record the date of purchase, serial number and dealer from whom purchased.
2. For your own information, retain a written record of any maintenance performed on the unit.
3. When claiming warranty service, please include a photocopy of the bill of sale, or other proof of purchase showing the date of sale must accompany the transceiver.

6-3. IN CASE OF DIFFICULTY

The problems described in this table are failures caused, in general, by improper operation or connection of the transceiver, not by defective components. Examine and check according to the following table.

7. OPTIONAL ACCESSORIES

7-1-1. CTCSS unit TSU-6

The use of the optional sub-audible tone decoder TSU-6 allows for CTCSS Tone Squelch operation. When this option is active squelch will only open when the proper tone is received.

Installation

Caution:

Before installation be sure to disconnect the DC power supply, or battery or damage may occur to the equipment.

1. Remove the 6 screws securing the Top cover.
2. Gently remove the top cover. (Fig. 1)

Fig. 1: Diagram showing the removal of the top cover of the transceiver to install the CTCSS unit.

3. Remove the backing from the small cushion provided with the TSU 6 and attach it to the back of the TSU-6 as shown in Fig. 2.
4. Attach the cable to the TSU-6 as shown in Fig. 2.
5. Remove the backing from the other side of the small cushion and attach the TSU-6 to the transceiver as shown.
6. Replace the cover and tighten the screws to complete the installation.

Fig. 2: Diagram illustrating the attachment of the TSU-6 unit and its cable to the transceiver.

7-1-2. Remote Controller RC-10

• To operate the transceiver with the RC-10 press and hold the CALL key on the transceiver and then turn on the POWER switch.
• To select the CALL channel when using the RC-10 press the F key on the RC-10 and then the VFO key.
• Please refer to the instructions provided with the RC-10 for a description of the other RC-10 functions.

7-2. ACCESSORIES

Microphones

• MC-44/MC-44E (E: European Version) MULTI FUNCTION MICROPHONE
• MC-44DM/MC-44DME (E: European Version) MULTI FUNCTION MICROPHONE WITH AUTOPATCH
• MC-55 MOBILE MICROPHONE (8-pin): The MC-55 provides UP/DOWN switches, LED display for switching transmit or receive, adjustable microphone gain, automatic timeout circuit (approx. 5 minutes) and many other functions.
• MC-60A MICROPHONE (8-pin): The zinc die cast base provides high stability. The MC 60A is complete with PTT and LOCK switches, UP/DOWN switches, impedance selector switch and a built-in pre amplifier.
• MC-80 MICROPHONE (8-pin): The MC-80 is an omnidirectional electret condenser microphone that is provided with UP/DOWN switches, volume adjustment for output level, PTT and LOCK switches, and a built-in pre-amplifier.
• MC-85 MICROPHONE (8-pin): The MC-85 is a unidirectional high-class electret condenser microphone provided with an output selector switch, audio level compensation circuit, low cut filter, level meter, PTT and LOCK switches.

Speakers

• SP-41 MOBILE SPEAKER (4 ohms)
• SP-50B MOBILE SPEAKER (8 ohms): Compact and smart, high quality external speaker provides flexibility of installation for maximum convenience.
• SP-430 EXTERNAL SPEAKER: The SP-430 is an attractive, compact external speaker. This low-distortion speaker provides clear reproduction of the high-quality audio obtained from the transceiver.

Other Accessories

• CTCSS UNIT TSU-6
• PG-3B DC LINE NOISE FILTER
• DC POWER CABLE
• RC-10 REMOTE CONTROLLER
• MA-4000 DUAL BAND ANTENNA
• RC-20 REMOTE CONTROLLER
• IF-20 INTERFACE
• PG-4J EXTENSION CABLE KIT
• PG-4H INTERFACE CONNECTING CABLE
• MB-201 MOBILE MOUNTING BRACKET
• PS-31 DC POWER SUPPLY
• PS-430 DC POWER SUPPLY
• PS-50 HEAVY DUTY DC POWER SUPPLY

[Diagram illustrating an example connection setup for the transceiver, including a remote controller (RC-20), power supply, and external speaker, showing interface connections.]