User's Manual
Table Of Contents
- What's_in_the_box
- Antenna
- Belt_clip
- Battery
- Installation
- Removal
- Charging_and_battery_maintenance
- Charging
- Battery_Maintenance
- Prolonging_the_life_of_your_battery
- Storage
- Chapter_2._Getting_to_know_your_radio
- The_main_display
- Battery_Level_Indicator
- Status_LED
- Side_key_1_-_CALL_(Broadcast_FM_and_Alar
- Side_key_2_-_MONI_(Monitor_and_Flashligh
- VFO_/_MR_-mode_key
- A_/_B_select_key
- Pound_key
- Keypad_Lock
- Star_key
- Menu_and_function_keys
- Numeric_keypad
- Band_key
- Accessory_jack
- Chapter_3._Basic_Use
- Power_and_volume
- Turning_the_unit_on
- Turning_the_unit_off
- Adjusting_the_volume
- Making_a_call
- Channel_selection
- Frequency_(VFO)_mode
- Channel_(MR)_mode
- Chapter_4._Working_the_menu_system
- Basic_use
- Using_short-cuts
- Chapter_5._Scanning
- Scanning_modes
- Time_operation
- Carrier_operation
- Search_operation
- Tone_Scanning
- Chapter_6._Dual_Watch
- Chapter_7._DTMF
- Chapter_8._Selective_calling
- CTCSS
- DCS
- 1750Hz_Tone-burst
- Chapter_9._Customization
- Display
- Power-on_message
- Chapter_10._Programming
- Manual_programming
- Simplex_channels
- Duplex_channels
- Computer_programming
- Attaching_the_programming_cable
- Radio_to_radio_cloning
- Part_III._How-to_and_setup_guides.
- Appendix_B._Menu_definitions
- 8_BEEP_-_Keypad_Beep
- 6_ABR_-_Display_Illumination_Time
- 25_SFT-D_-_Frequency_Shift_Direction
- 10_R-DCS_-_Receiver_DCS
- 0_SQL_-_Squelch_Level
- RANGE!B8
- General
- Transmitter
- Receiver
- DCS_table
- CTCSS_table
VISIT!BAOFENGTECH.COM!AND!MIKLOR.COM!FOR!DOWNLOADS!AND!HELP!
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Chapter!8.!-!DTMF!
DTMF!is !an!in-band!signaling!method!using!dual!sinusoidal!signals!for!any!given!cod e.!Originally!
developed!for!telephony!systems,!it!has!proved!a!very!versatile!tool!in!many!other!areas.!
!
In!two-way!rad io!systems,!DTMF!is!most!com m only!used!fo r!autom ation!system s!and!remote!
control.!A!com m on!example!would!be!in!amateur!radio!repeaters!where!some!repeaters!are!
activated!by!sending!out!a!DTMF!sequ ence !(usu ally!a!simple!single-digit!sequence).!
!
Table!8.1.!DTMF!fre q u en c ies !an d !co rr e sp o nd in g !co d es!
!
!
1209!Hz!
1336!Hz!
1477!Hz!
1633!Hz!
697!Hz!
1!
2!
3!
A!-! !
770!Hz!
4!
5!
6!
B!-! !
852!Hz!
7!
8!
9!
C!-! !
941!Hz!
*!
0!
#!
D!-! !
!
The!BTECH!GMRS-V1!has!a!full!im p le mentatio n !of!DTMF,!including !the!A,!B,!C !an d!D!codes.!
!
The!numerical!keys,!as!well!as!the! ,!and! ,!keys!correspond!to!th e!matching!DTMF!codes! as!