Two-Way Radio Functions, Features, and Specifications
This document outlines the various functions, operational modes, and technical specifications of a two-way radio device.
Key Functions
- Frequency bands: FM (88.1-108MHz Receive), VHF (108-136MHz AM Receive, 136-174MHz RX & 144-148MHz TX), UHF (400-520MHz RX & 420-450MHz TX)
- GPS (optional)
- Boot interface customization
- PC Programming
- Wireless programming via Bluetooth (optional)
- Working modes: Frequency mode / Channel mode
- FM Radio
- Dual standby
- 50 CTCSS / 105 DCS codes
- Individual RX/TX CTCSS/DCS settings
- TOT (Time-out Timer)
- Voice encryption (Frequency Hopping)
- Frequency Step: 2.5K, 5K, 6.25K, 10K, 12.5K, 20K, 25K, 50K
- Battery saving
- Reverse Frequency / Talk around
- VOX (Voice Activated Transmission)
- Busy channel lockout
- Low battery alert / Voltage display
- Automatic backlight
- Channel display options: Frequency / Channel / Channel name
- Scan modes: Time / Carrier / Search
- Frequency mode operations: Frequency difference +/-, Frequency difference range (0-99.9995MHz), Edit/Save channel specs
- 256 memory channels
- Emergency function
- Frequency scan
- DTMF (Dual-Tone Multi-Frequency)
Keypad Description
| Key | Short Press | Long Press |
|---|---|---|
| PTT | Begin transmission. | N/A |
| P1 | Switch A/B band. | In channel mode, switch channel display mode. |
| P2 | Switch frequency mode and channel mode. | Turn on/off ANI name display function. |
| [Select/Confirm] | Select/confirm. | N/A |
| [Up/Down Arrows] | Navigate menu options. | Quickly change menu options; in Scan mode, change scan direction. |
| [Left Arrow] | N/A | In input state, clear input information. |
| [Right Arrow] | N/A | N/A |
| Numeric Keypad (0-9, *, #) | Input information, non-standard CTCSS/DCS. | N/A |
| [Key] | Switch Reverse Frequency/Talk around. | Lock/unlock keypad. |
| [FM Key] | Scan FM frequency automatically in FM mode. | N/A |
| [SOS] Key | Exit SOS mode. | Enter SOS function. |
| Power/Volume Knob | N/A | Clockwise: Power on/Volume+; Anticlockwise: Power off/Volume-. |
Operational Modes & Features
Scan Modes
TO (Time Scanning): Pauses scanning upon signal detection, continues after ~5 seconds even if signal persists.
CO (Carrier Scanning): Pauses scanning on channel detection, stays on frequency until signal disappears, with a 2-second delay before resuming.
SE (Search Scanning): Exits scanning when a signal is detected and stays at that frequency.
FM Radio Function
To use FM radio:
- Turn on FM function; the screen displays the current FM frequency.
- Press [Up]/[Down] keys or input frequency (88.1-108MHz) to change. Press [#] key to scan FM frequencies automatically.
- Adjust volume using the Power/volume knob.
- Press the FM key again to exit FM mode.
Frequency Scan
Scan other radios' CTCSS/DCS and frequency to establish contact. This function can scan U/V/200M/350M bands. The [P1] key switches the band to be scanned. After scanning frequency, it proceeds to scan CTCSS/DCS. If none is found, 'NONE' is displayed. Scanned data can be saved to a channel using the [Save] key, or another scan can be initiated with [Up]/[Down] keys.
DTMF (Dual-Tone Multi-Frequency)
DTMF Encode:
- Quick Transmitting Encode: While transmitting, press digit keys (0-9, A, B, C, D, *, #) to transmit DTMF codes. Pressing and holding transmits continuously.
- Transmitting Encode after Editing: In standby mode, press [#] to enter DTMF edit menu. Input 0-9, A, B, C, D, *, # (up to 6 digits). Press [#] to end. Press PTT to transmit. Press [Left Arrow] to delete. Press [Up Arrow] to exit edit mode.
DTMF Decode: Used to identify which radio is transmitting.
ANI Name Display
Displays the name of the transmitting radio. Up to 60 names can be selected (50 pre-defined, 10 editable via programming software).
GPS Function
Access the GPS positioning interface by pressing [Up] or [Down] keys. Allows switching between coordinate and image modes. Features a backtracking function to store a starting point and view real-time direction and distance, aiding navigation.
Wireless Programming via Bluetooth
Enables programming the radio wirelessly using Bluetooth technology.
Dual PTT
Set Side Key 2 as PTT-B. Press the main PTT to transmit on Band A, and PTT-B to transmit on Band B.
AM Mode
Supports AM mode receiving for frequencies between 108-136MHz.
Menu List and Operation
The radio features a menu system for configuring various settings. Navigation is done using the directional keys.
Menu Operation Steps:
- Press [Menu] key to enter the menu.
- Use [Up]/[Down] keys to select an option.
- Press [Menu] key again to enter the selected function.
- Use [Up]/[Down] keys to select an option within the function.
- Press [Menu] key to confirm and return to the main menu.
- Press [Exit] key to exit the menu and return to normal working mode.
Note: Settings like Step, TX Power, W/N Band, CTCSS/DCS, Frequency Difference are configurable only in frequency mode.
Menu Items (with Chinese and English descriptions):
| Chinese | English Description |
|---|---|
| 静等级 | Squelch Level |
| 步进频率 | Frequency Step |
| FLONG 2候功能设 | FLONG 2 Function Setting |
| 过中继尾自证时 | Repeater Tail Elimination Time |
| 侧音开关 | Side Tone Switch |
| NI-ST | NI-ST (Noise Interference Suppression Technology) |
| 身价码功能 | ANI Function |
| 发码附加延迟 | Encode Additional Delay |
| 声控延时 | VOX Delay |
| 中尾音消除 | Intermediate/Tail Tone Elimination |
| A段显示模式 | Band A Display Mode |
| B段显示模式 | Band B Display Mode |
| 双守发射选择 | Dual Standby Transmit Selection |
| 尾音消除 | Tail Tone Elimination |
| 报警模式 | Alarm Mode |
| GPS 定位 | GPS Positioning |
| 蓝牙写频 | Bluetooth Programming |
| 接收时间显示 | Receive Time Display |
| 恢复出厂设置 | Restore Factory Settings |
Screen Display and Icons
The device features a display showing frequency and status indicators. Example displays show frequencies like '144, 12500' and '144, 12500 127'.
Icon Definition:
- 13: [Battery Level Indicator]
- 500-1: [Frequency/Channel Information]
- Automatic Backlight Icon: 自动背光灯
- Status Indicator: TX - Red light, RX - Green light
FCC Compliance Statements
This device complies with Part 15 of the FCC Rules. Operation is subject to two conditions: (1) it must not cause harmful interference, and (2) it must accept any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with 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 interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
WARNING: MODIFICATION OF THIS DEVICE TO RECEIVE CELLULAR RADIOTELEPHONE SERVICE SIGNALS IS PROHIBITED UNDER FCC RULES AND FEDERAL LAW.
Licensing Information
Use of this radio in the USA is subject to FCC rules and regulations. Changes or modifications not expressly approved by the manufacturer may void the user's FCC authority to operate this radio.
To comply with FCC requirements, transmitter adjustments should only be made by or under the supervision of a person certified as technically qualified to perform transmitter maintenance and repairs in the private land mobile and fixed services, as certified by an organization representative of the user of those services.
Replacement of any transmitter component (crystal, semiconductor, etc.) not authorized by the FCC equipment authorization for this radio could violate FCC rules.
Note: Use of this radio outside the country where it was intended to be distributed is subject to government regulations and may be prohibited.
Important: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this device. Your radio is set up to transmit a regulated signal on an assigned frequency. It is against the law to alter or adjust the settings inside the radio to exceed those limitations. Any adjustments to your radio must be made by qualified technicians.
