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Extended Operations

When operating in fringe areas at some distance from

the system, the other party may not receive your transmis-

sion clearly. Also you may notice that the background noise

will increase on received signals. Moving to higher ground

or moving closer to the system will help alleviate these

problems. If moving closer to the system is not practical,

communication may be improved by moving away from

shielding structures. At 800 MHz the wave length is very

short; sometimes moving a few inches to a few feet can make

significant signal strength changes. Finding the best location

can also be done while listening to the background noise

while moving about; attempt to find a spot where the

background noise is reduced to a minimum or eliminated

entirely. This may make the difference from not being heard,

to being heard loud and clear when operating in the fringe

areas of your system coverage.

The fringe distance will vary greatly in plains areas, hilly

terrain, and mountaintop sites.

Consult your Maxon Dealer regarding the specific opera-

tional range and coverage of the system(s) programmed

into your TM-4800 radio.

22

Summary of Contents for TM-4800

Page 1: ...Operating Instructions TM 4800 Mobile 800 MHz Transceiver...

Page 2: ...he functions described in this manual are dependent on the system in use Your Maxon Dealer has programmed the TM 4800 radio to optimize your requirements Should you have any questions regarding the op...

Page 3: ...10 TrunkingandConventionalMode 10 ChannelMonitoring 10 System Handshaking 10 Transmitting 11 Receiving 12 T A Talk Around 12 TranspondMode 13 Scan Modes 14 General 14 System Scan 14 SystemLockout 14 G...

Page 4: ...ileScanning 34 First Available System Scan 34 TelephoneCalls 35 Placing a Telephone Call 35 ReceivingaTelephoneCall 37 AdditionalTelephoneCallingInformation 38 EnteringTelephoneNumbers 38 ClearingTele...

Page 5: ...within two feet 0 6 meter of the antenna DO NOT operate the radio near unshielded electrical blasting caps or in an explosive atmosphere unless it is a type specifically designed and qualified for suc...

Page 6: ...lly inspect the contents of your package for thefollowingitems Radio Microphone DC power supply cord Mounting bracket hardware Microphone hanger and hardware Operatinginstructions If any items are mis...

Page 7: ...ith the properoperationofautomaticcollisionprotection devices air bags DO NOT install the unit where it would likely cause injury in case of accident After selecting a location for the radio hold the...

Page 8: ...Repeater talk around conventional and trunking modes Automatic system ringback if system is busy Transmitinhibitwithbusytone Clear to talk tone First available system scan FASS Optionalmicrophone for...

Page 9: ...ush To Talk bar on microphone places transceiver in transmit mode Turns transceiver On Off and adjusts VOLume Changes SYStem number LoCKs displayed System out of scan sequence Talk Around bypasses sys...

Page 10: ...ise supplies power to the radio and increases volume level A counter clockwise rotation decreases volume level To turn transceiver power off rotate knob counter clockwise to detent Microphone Connecto...

Page 11: ...ctor N type connector Must be connected to a properly installed 50 ohm antenna Power Connector Polarized plug for 13 8 VDC NEGATIVE GROUND SYSTEMS ONLY Auxiliary Speaker Connector A 3 5mm diameter jac...

Page 12: ...und Key Places the TM 4800 into the talk aroundmodeontrunkingandconventionalsystems Dealerprogrammableoption Allowsdirectradio to radio communication when out of range of the system SCN Scan Key Press...

Page 13: ...First Available System Scan has been enabled PHONE Indicates that the telephone mode has been selected Indicates that the displayed group is programmed for telephone interconnect GRP Group Displays a...

Page 14: ...remove the microphone from the hanger bracket to monitor Inbothtrunkingandconventionalsystems operationmay vary from system to system Your Maxon Dealer will be able to assist with particular operation...

Page 15: ...ld the P T T bar on the side of the microphone Listen for the clear to talk tone or wait for the TX RX indicator to glow steady red Hold the microphone 1 or 2 inches from your mouth speakingclearlyand...

Page 16: ...or intercept tone is heard refer to Trunking SupervisoryTones descriptionsformore information NOTE If scanning be sure to respond before scanning resumes If you do not another call may be received and...

Page 17: ...conventional operation press the T A key again TranspondMode If transpond has been enabled by your Dealer your radio willautomaticallysend transpond anacknowledgmentto the system indicating that your...

Page 18: ...dconventionalsystems unlessthey are locked out of scan as described under System Lockout When an incoming call is detected scanning stops and the call is received The display will indicate the system...

Page 19: ...pScan There are two different ways the TM 4800 does group scanning Your Maxon Dealer programs these functions into the radio during initial setup Only those groups your Dealer has enabled for group sc...

Page 20: ...pause scanning resumes To exit group scan mode press SCN and hold for 2 seconds See Scan Resume Delay for additional informationregardingthepause TransmittingWhileScanning When a message is transmitt...

Page 21: ...ot Scan Resume Delay After a message is received or transmitted in the scan mode there is a delay period of 1 7 seconds before scanning resumes The exact length of this delay is programmed by your Dea...

Page 22: ...rst available system scan FASS rotate the on off volume controlcounter clockwisetodetent shutting off power to radio Press and hold the SCN key on either the radio or the DTMF microphone while turning...

Page 23: ...nds after the transmit indicator flashes several times and RANGE appears in the display an out of range condition is indicated To complete a call you may need to get closer to your radio system Once t...

Page 24: ...radio is out of range or too far from system site to provide communications BUSY Indicates that the channel is busy when transmitting This message is accompanied by the intercept tone TX Time This me...

Page 25: ...an function has been enabled Transceiver Service There are no user serviceable components inside the Maxon TM 4800 radio Altering the internal components oradjustmentsmayresultinillegalemissions inclu...

Page 26: ...h is very short sometimes moving a few inches to a few feet can make significantsignalstrengthchanges Findingthebestlocation can also be done while listening to the background noise while moving about...

Page 27: ...nking operationsnowareexemptfromindividuallicensing requirements but must be operated in a licensed system Consult your Maxon Dealer or contact the Federal CommunicationsCommissionregardingspecificlic...

Page 28: ...t in a manner for which it was not designed or by causes external to the Product This warranty is void if the serial number is altered defaced or removed Maxon s sole obligation hereunder shall be to...

Page 29: ...LUDING ANY SPECIAL INCIDENTAL INDIRECT OR CONSEQUENTIAL DAMAGES OR FOR THE LOSS OF PROFIT REVENUE OR DATA ARISING OUT OF THE USE OF OR THE INABILITY TO USE THE PRODUCT This Warranty is void for sales...

Page 30: ...SECTIONII Model TMA 4474 Optional Microphone with DTMF Keypad 26...

Page 31: ...keypad allows telephone interconnect when used with the TM 4800 radio This microphone also gives the user easier access to TM 4800 functions When using the TMA 4474 the TM 4800 mobile has the followi...

Page 32: ...k bar on microphone places transceiver in transmit mode Changes SYStem number Changes GRouP number InitiatesSCaNningmode Talk Around bypasses system when out of range of system Enable or disable Phone...

Page 33: ...d on the radio LCD Phone STR Store Stores telephone number displayed on the radio memory location 1 through 8 Phone RCL Recall Recalls stored telephone number from the radio memory location 1 through...

Page 34: ...fier is shown in main body of the radio display SCN Scan Key Pressing this key initiates the scan feature When the SCN key is pressed followed by pressing either the SYS system or GRP group key system...

Page 35: ...1 second and the remaining 7 digits willbeshownandremaindisplayeduntilthefunctionis changed or the RCL Recall key is again pressed PHONE Phone Key Places TM 4800 in or out of phone mode The phone key...

Page 36: ...through 8 Phone CLR Clear Deletes the last digit shown in the radio display To erase the entire number press and hold CLR until all the digits are deleted NOTE The telephone number entered in the rad...

Page 37: ...rtion of the display When the incoming call is complete scanning resumes after a pre determined pause To exit scan mode press and hold SCN for 2 seconds See Scan Resume Delay for additional informatio...

Page 38: ...efirstsystemthat is in range of the radio To enter first available system scan FASS rotate the on off volumecontrolcounter clockwisetodetent shutting off power to radio Press and hold the SCN key on t...

Page 39: ...nect Operation A Turn radio power on and set the volume as desired B Select a system that contains an interconnect group The telephone icon will appear on the radio s LCD You may enter the phone mode...

Page 40: ...press and hold the P T T bar and press the pound sign key for 1 to 2 seconds Then release the P T T bar NOTE This step is important as well as good operating practice Pressing the pound sign key inst...

Page 41: ...To release the call to hang up press and hold the P T T bar and press the pound sign key for 1 to 2 seconds Release the P T T bar Receiving a Telephone Call A Turn radio power on and set the volume a...

Page 42: ...A Press the PHONE key to enter the phone mode The word PHONE will appear in the upper right portion of the radio display The numeric DTMF telephone keypad is now enabled B Enter the desired telephone...

Page 43: ...8 9 1 6 3 2 0 C Press STR D Press memory location 1 through 8 for example 2 The number 1 816 891 6320 is now stored in memorylocation2 E Clear the existing digits by pressing CLR until no information...

Page 44: ...s after the transmit indicator flashes several times and RANGE appears in the display an out of range condition is indicated To complete a call you may need to get closer to your radio system Once thi...

Page 45: ...only when making telephone calls Type of tones varies depending on the repeater system in use ReorderTone Three beeps indicate that the call has been terminated by the system ReturnTimeWarningTone Two...

Page 46: ...rn AroundTone This is a single beep which may be used to indicate to the landside party when to respond to your transmission It sounds when you release the P T T bar and you may partially hear this to...

Page 47: ...the Product in a manner for which it was not designed or by causes external to the Product This warranty is void if the serial number is altered defaced or removed Maxon s sole obligation hereunder sh...

Page 48: ...LUDING ANY SPECIAL INCIDENTAL INDIRECT OR CONSEQUENTIAL DAMAGES OR FOR THE LOSS OF PROFIT REVENUE OR DATA ARISING OUT OF THE USE OF OR THE INABILITY TO USE THE PRODUCT This Warranty is void for sales...

Page 49: ...Maxon America Inc 10828 NW Air World Drive Kansas City Missouri 64153 816 891 6320 Fax 816 891 8815...

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