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11 

Getting Acquainted 

Front panel 

 

 

 

1.Power switch/volume adjust key 

Turn clockwise to switch the transceiver power on, turn counterclockwise fully to switch the 

transceiver off. 

When the transceiver is turned on, rotate clockwise to increased  volume, counter-  clockwise to 

decrease

 

the volume.

 

2.Receiving/Transmitting Indicator 

When transmitting glows red, when receiving glows green 

3.Microphone Jack 

4.Return Key 

5.Left key 

6.MENU Key 

7.Hang Up Key 

8.Right Key 

9.Call Key 

10.F1 Programmable Key F1 

Press to activate the programmable function. (The detailed consult to basic operation) 

11.F2 Programmable Key F2 

Press to activate the programmable function. (The detailed consult to basic operation) 

12.F3 Programmable Key F3 

Press to activate the programmable function. (The detailed consult to basic operation) 

13.F4 Programmable Key F4 

Summary of Contents for BF-TM8250

Page 1: ...and exploration of radio communications technologies In order to lead intelligent technologies in the industry We still make every effort to research and design products according to modern complicated communications environment and we offer complete and customized communication solutions to clients Our products will satisfy you because of its excellent performance and outstanding communications s...

Page 2: ... not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the inter...

Page 3: ... a long time Don t place the transceiver on extremely heat damp dusty area and don t put it on unstable surfaces When restriction or warnings are posted regarding the use of radio devices please obey the regulation turn the transceiver power off Use of the transceiver while you are driving may be against traffic laws please prohibit using it If you notice any problems on the transceiver please tur...

Page 4: ...ions 18 Contacts 18 Scanning 20 Zone 20 Text Message 20 Call Log 21 Recording 22 Setting 22 Roam 23 Emergency 24 Analog Signaling 26 Voice Encryption 27 Reject Stranger Call 27 Direct Mode 28 Compander 28 Scrambler 28 Time Out Timer TOT 28 TX Permission 28 CTCSS CDCSS 29 CTCSS Frequency Table 30 CDCSS Standard Code Table 30 Specifications 32 Statement 34 ...

Page 5: ...he table below If any items are missing or have been damaged during shipmen please contact with dealer immediately Accessory Items Num Qty Microphone 1 Mounting bracket 1 Microphone hanger 1 DC power cable 1 Screws 4 Fuse 1 Instruction Manual 1 Warranty Card 1 Certificate 1 Microphone Mounting bracket Microphone hanger DC power cable Screws Fuse Notes Do not use accessories not specified by BelFon...

Page 6: ...ightened please use specified Mounting bracket and screws to install Antenna Installation Before operating you must first install an efficient well tuned antenna The success of your installation will depend largely on the type of antenna and its correct installation The transceiver can give excellent results if the antenna system and its installation are given careful attention The antenna for a b...

Page 7: ...tting All fixed stations should be equipped with a lightning arrester to reduce the risk of fire electric shock or transceiver damage Power Cable Connection Be sure to use a 12 V vehicle battery that has sufficient current capacity If the current capacity to the transceiver is insufficient the transmit output power may drop excessively and generate warning tone Never connect the transceiver to a 2...

Page 8: ...connections then turn on the power to operation Do not remove the fuse holders from the cable otherwise the incorrect connection may lead to the device get smoke Microphone Installation Open the accessory jack cover then align the arrows with the left of panel and plug press firmly on the plug until the locking tab clicks To pull microphone away from transceiver pull the head of microphone latch o...

Page 9: ...sitive Black negative Press the connectors firmly together until the locking tab clicks Note For your transceiver to fully exhibit its performance capabilities we recommend using the BF specified power supply Replacing Fuses If the fuse blows determine the cause then correct the problem After the problem is resolved replace the fuse If newly installed fuses continue to blow disconnect the power ca...

Page 10: ...g Indicator When transmitting glows red when receiving glows green 3 Microphone Jack 4 Return Key 5 Left key 6 MENU Key 7 Hang Up Key 8 Right Key 9 Call Key 10 F1 Programmable Key F1 Press to activate the programmable function The detailed consult to basic operation 11 F2 Programmable Key F2 Press to activate the programmable function The detailed consult to basic operation 12 F3 Programmable Key ...

Page 11: ...t to basic operation 15 Speaker Rear Panel 1 ANT Connect an external antenna to this terminal When making test transmissions connect a dummy load inplace of the antenna The antenna system or load should have an impedance of 50 Ω 2 DC 13 8V Connect to13 8 V DC power 3 PC Jack To connect to PC you must first connect the transceiver to your PC using an optional programming cable ...

Page 12: ...phone to transmit 3 Call Key Press to transmit default call 4 Microphone 5 Numeric key 6 Key When text editing to delete 7 Left Key 8 Up Key To switch channel number up 9 Right Key 10 Down Key To switch channel number down 11 Return Key 12 Hang Up Key 13 Manual Dial Key 14 Key When text editing to switch input method ...

Page 13: ...Around Direct Mode Duplex Mode Monitor Permanent Monitor Roaming Recording normally Recording abnormally Analog Receiving ID Single ID ID Group ID ID All ID Root Menu Contact Menu Scanning Menu Text Message Menu Zone Menu Call Log Menu Setting Menu Read Message Unread Message Outbox message send successfully Outbox message send Failed The First Priority Scanning Channel The Second Priority Scannin...

Page 14: ... the transceiver is power on you can rotate the power switch volume adjust keys to adjust the volume level rotate the knob clockwise to increase the volume or rotate the knob anti clockwise to decrease the volume Selecting a Zone The radio supports up to 50 zones each with a maximum of 16 channels 50 zones all support up to 160 channels You may select a desire zone through enter zone menu then han...

Page 15: ... Alert Tones On Off To enable or disable all tones quickly 12 Record On Off To enable or disable record quickly 13 Message Menu Quick access to short message 14 Zone Selection Menu Quick access to Zone Selection 15 Address List Menu Quick access to Contact Menu 16 Recording Menu Quick access to Recording Menu 17 Remote Enable Quick access to Remote Enable Menu 18 Remote Disable Quick access to Rem...

Page 16: ...nter Contacts menu to select the private call number you want to call then press PTT key to transmit a private call 3 Enter Contacts menu and go to manual dial menu or press programmed Manual Dial key input a private call number you want to call then press PTT key to transmit 4 Enter Call Log menu to select the private call number you want to call then press PTT key to transmit a private call 5 Yo...

Page 17: ...cessfully the radio displays Receiving Signal Call and the icon of RSSI and speaker appears user can receive audio Calls on Compatible Channel On digital compatible analog channel press PTT key if is not within hang time to transmit digital call within the preset time period to call back On analog compatible digital channel press PTT key if is not within hang time to transmit analog call within th...

Page 18: ...get killed device to allow it to be used normally Device Disable Allow a user to send Device Disable command to the target device via menu If the device is lost or stolen a user can use this function to disable the device However this device will continue monitoring air interface to receive its Device Enable command Edit Name Modify the name of a private call contact Press key to delete press to s...

Page 19: ...nables the feature Auto Scan via the programming software switch to the channel will enter scanning automatically While programmable button programmed as Scan on off press it to enable scan feature 2 View Edit List Allow a user to view edit the scan list via menu user can view members of the scan list or edit priority of members Also allow a user to add a new member to the scan list the list conta...

Page 20: ... user can save 10 entries text messages and each of a message contains 140 characters at most on preset SMS You can choose to edit and send any entry 4 Outbox Enter outbox menu you can view the message is sent successfully or failed outbox can save up 20 sent messages If sent message is successful displays you can choose to forward delete it or view date and time if sent message is failed displays...

Page 21: ... Note On digital channel if the work mode is duplex and transmitting private call while enable recording feature the record mode is enforcement of uncompress mode Setting 1 Settings Allow a user to perform basic settings for the transceiver Talk Around When your repeater malfunctions or when radio is out of repeater s range you can continue to communicate in talk around mode While enable talk arou...

Page 22: ...nt date week time Language The radio supports two languages Chinese and English Power on Password If enable power on password feature via programming software you can modify the password by this menu First you need input old password correctly then input a new password twice the same that will modify the password successfully Note This menu is effective if power on password is set via programming ...

Page 23: ...d emergency information then you can speak into the microphone allowing your voice and background noise be transmitted automatically as you do not to press PTT key 1 Send Emergency Alarm If the current channel adds emergency system and the current channel as the emergency revert channel press the programmed emergency on off key to send alarm information LED indicator glows red the radio displays i...

Page 24: ...press the programmed Emergency On key to send emergency signaling the radio display icon and text information Alarm Signaling Sending if send emergency information the radio display text information alarm sending Long press the programmed Emergency Off key to exit emergency mode 2 Send Emergency Alarm and Call Allow user to send emergency information to others and then you can transmit emergency c...

Page 25: ...tone will sound 5 Tone Signaling 5 Tone Contact While users set 5 Tone signaling type for the current channel the 5 tone contact supports a maximum of 200 5 Tone call list on the menu of 5 Tone contact you can select one of the contacts to replace the address code of decoding sequence and encoding sequence Send 5 Tone Signaling On analog channel press the programmed one touch call key to send 5 to...

Page 26: ...ransmission is deemed successful after signaling is transmitted no matter whether the other party receives it or not Receive DTMF Allow the user define the call type of the 5 tone system as Common Call Emergency Call Swoon Disable Enable Check Call Alert ACK The decoding is successful while received signaling and match with decode type Voice Encryption The voice encryption can encrypt your audio s...

Page 27: ...ed signals are expanded when they receive This background feature allows higher clarity of signals avoiding excessive noise Scrambler The scrambler can be enabled only for analog channel scrambler is used for encrypted audio via programming software checked frequency interference enable and set the value of scrambler User must set the same value of scrambler for both the transmit side and the rece...

Page 28: ...transmit on the channel if it is already in use and the CTCSS CDCSS code in use If the channel is busy press PTT key a warning tone will sound CTCSS CDCSS On analog channel and compatible channel digital and analog channel you can set unique CTCSS CDCSS to guarantee the privacy of your communication on digital compatible analog channel or analog compatible digital channel is must attach to CTCSS C...

Page 29: ...503I 6 D043N D043I 34 D244N D244I 62 D506N D506I 7 D047N D047I 35 D245N D245I 63 D516N D516I 8 D051N D051I 36 D251N D251I 64 D532N D532I 9 D054N D054I 37 D261N D261I 65 D546N D546I CTCSS No Freq Hz CTCSS No Freq Hz CTCSS No Freq Hz CTCSS No Freq Hz 1 67 0 11 94 8 21 131 8 31 186 2 2 69 3 12 97 4 22 136 5 32 192 8 3 71 9 13 100 0 23 141 3 33 203 5 4 74 4 14 103 5 24 146 2 34 210 7 5 77 0 15 107 2 2...

Page 30: ... D116N D116I 45 D343N D343I 73 D654N D654I 18 D125N D125I 46 D346N D346I 74 D662N D662I 19 D131N D131I 47 D351N D351I 75 D664N D664I 20 D132N D132I 48 D364N D364I 76 D703N D703I 21 D134N D134I 49 D365N D365I 77 D712N D712I 22 D143N D143I 50 D371N D371I 78 D723N D723I 23 D152N D152I 51 D411N D411I 79 D731N D731N 24 D155N D155I 52 D412N D412I 80 D732N D732N 25 D156N D156I 53 D413N D413I 81 D734N D73...

Page 31: ...175 W 63 H mm Weight 1435g Transmitter RF Output Power UHF High Power 25W UHF Low Power 10W 4FSK Modulation Only Data 7K60FXD Data and Audio 7K60FXE FM Modulation 12 5 kHz 8K50F3E Modulation Limiting 2 5kHz 12 5kHz FM Noise 40dB Conducted Emission 36 dBm 1GHz 30 dBm 1GHz Adjacent Channel Power 60dB Audio Response 1 3 dB Audio Distortion 3 Digital Voice coder Type AMBE 2 Receiver Digital Sensitivit...

Page 32: ... 1 3 dB Audio output power 3W Speaker Audio Distortion 3 Typical Conducted Spurious Emission 57dBm TTFF Time To First Fix Cold Start 1minuter with well signal TTFF Time To First Fix Hot Start 10 Second with well signal Environmental Specifications Operating Temperature 30 50 Storage Temperature 30 50 Humidity MIL STD 810C D E F Vibration Shock MIL STD 810C D E F ...

Page 33: ...e accuracy and completeness of this manual if you have any question you can contact with us we will make a detailed answer to you in time All the above specifications and design are subject to change without prior notice due to continuous development ...

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