Long Range Video Transmission System
In battlefield FPV application scenarios, the farther the pilot is from the enemy, the lower the risk of being targeted. For this reason, we have developed a long-range video transmission system with an operating range of 40-60 kilometers. It adapts to complex and dynamic battlefield environments, breaks through traditional distance limitations, and ensures stable signal transmission in various battlefield scenarios. This allows pilots to precisely control drones for reconnaissance, observation and other missions, effectively safeguarding pilot safety while improving the flexibility and practicality of drone operation on the battlefield.
10W/20W模拟无线图像发射模块（VTX）
10W/20W Analog Video Transmitter （VTX）
目录/ Table of Contents
1. 免责声明/ Disclaimer
2. 产品概述/ Product Overview
3. 核心特性/ Key Features
4. 物理尺寸/ Dimensions
5. 电气规格参数/ Electrical Specifications
6. 按键与LED 指示灯操作说明 / Button & LED Indication Operation
7. 三频段信道频点对照表/ Frequency Channel Table of Three Bands
8. 硬件接口说明/ Hardware Interface Description
9. 功率档位使用建议/ Power Level Application Guide
10. 安全使用注意事项/ Safety & Usage Precautions
11. 无线电合规声明/ Radio Regulatory Compliance Statement
1 免责声明 / Disclaimer
· 本手册仅用于产品操作指引，产品参数、外观若有升级优化，恕不另行通知；This manual is for operation guidance only. Product specifications and appearance are subject to upgrade without prior notice.
· 因违规操作、私自拆机、无天线发射、超压供电造成的设备损坏，不在保修范围内；Damage caused by improper operation, unauthorized disassembly, transmission without antenna or overvoltage power supply shall not be covered by warranty.
· 用户使用本设备需严格遵守当地无线电管理法律法规，非法频段使用后果由使用者自行承担。Users must comply with local radio management regulations. The user shall bear all liabilities arising from illegal frequency operation.
2 产品概述 / Product Overview
本产品为大功率FM 模拟无线图像发射模块（VTX），支持 PAL/NTSC 标准模拟 CVBS 视频输入，适配无人机、车载监控、应急巡检等专业无线图传场景。 This product is a high-power FM analog wireless video transmitter (VTX), compatible with PAL/NTSC analog CVBS video input, widely applied to UAV, vehicle monitoring, emergency inspection and other professional wireless video transmission scenarios.
模块支持DC 10–33V 宽电压供电，覆盖 1300–1500MHz、3200–3600MHz、4500-4700MHz、4990-5200MHz、5700–5900MHz 多个工作频段可选择定制；每个频段内置8 组可选工作频点 CH1–CH8，可通过机身按键手动切换频段与信道。设备采用标准 SMA 可拆卸射频天线接口，搭载 10W/20W 两档可调射频发射功率，远距离传输稳定性强。 The module supports wide DC 10–33V power input and operates in five frequency bands: 1300–1500 MHz, 3200–3600 MHz 4500-4700MHz、4990-5200MHz and 5700–5900 MHz customizable. Each band contains 8 selectable channels (CH1–CH8), which can be manually switched via onboard buttons. Equipped with detachable SMA RF antenna connector and dual adjustable RF output power (10W / 20W), it delivers stable long-range video transmission.
3 核心特性 / Key Features
l 供电：DC 10–33V 宽电压输入，适配各类机载锂电池、车载直流电源
Wide voltage input: DC 10–33 V, compatible with UAV lithium batteries and vehicle DC power supply
l 五频段工作：1300–1500MHz / 3200–3600MHz /4500-4700MHz、4990-5200MHz、 5700–5900MHz，每频段 8 信道 CH1~CH8
Five operating bands: 1300–1500MHz / 3200–3600MHz /4500-4700MHz/4990-5200MHz/ 5700–5900MHz, 8 channels (CH1~CH8) per band
l 双按键控制：CH 信道切换键、PW 功率切换键，搭配 LED 数码管状态显示
Dual control buttons: CH channel button, PW power button with digital LED status display
l 射频接口：标准SMA-K 可拆卸天线接口，50Ω 阻抗匹配
RF port: Detachable SMA-K antenna connector, 50Ω impedance matching
l 发射功率两档可调：10W（中远距调试）、20W（远距离视距传输）
Dual adjustable transmit power: 10W (Mid-range debugging), 20W (long-range line-of-sight transmission)
l 视频制式：自动兼容PAL / NTSC 复合模拟 CVBS 信号
Auto compatible with PAL / NTSC analog CVBS video signal
l 金属铝合金壳体，散热结构优化，长时间高功率工作不易过热
Aluminum alloy housing with optimized heat dissipation for continuous high-power operation
l 上电自动记忆关机前频段、信道、功率档位参数
Auto save last band, channel and power settings after power cycle
4 物理尺寸 / Dimensions
· 整机外形尺寸： 87 × 39 × 19 mm Overall dimension: 87 × 39 × 19 mm
· 安装固定孔距： 30.5 × 30.5 mm Mounting hole spacing: 30.5 × 30.5 mm
· 重量：80克 Weight: 80g
5 电气规格参数 / Electrical Specifications
参数项目Item | 参数规格Specification |
直流供电范围DC Input | DC 10 ~ 33 V |
射频接口RF Connector | SMA-K 50Ω |
调制方式Modulation | FM 模拟调频 FM Analog |
视频输入Video Input | CVBS，PAL / NTSC 自动识别 CVBS, PAL/NTSC auto detection |
工作频段Frequency Bands | 1300–1500MHz / 3200–3600MHz /4500-4700MHz/4990-5200MHz/ 5700–5900MHz |
单频段信道数量Channels per Band | 8 路（CH1~CH8） |
射频输出功率RF Output Power | 10W / 20W 两档可调 Dual levels |
工作温度Operating Temp | -20℃ ~ +65℃ |
存储温度Storage Temp | -30℃ ~ +75℃ |
相对湿度Humidity | 10% ~ 90%，无凝露 10%~90% non-condensing |
6 按键与 LED 指示灯操作说明 / Button & LED Indication Operation
设备配备两颗独立功能按键：CH 键（信道 / 频段切换）、PW 键（功率档位切换），LED 数码管实时显示当前状态，3 秒无操作自动锁定参数。
The device is equipped with two independent buttons: CH Button (Channel/Band Switch) and PW Button (Power Level Switch). Digital LED displays real-time status, and settings auto-lock after 3 seconds of inactivity.
6.1 CH 信道 / 频段切换键 CH Button
长按按键1 秒：进入频段切换模式，短按循环切换
Hold for 1s: Enter band switching mode; short press to cycle bands
· 短按按键单次：当前频段内循环切换CH1~CH8 频点
Single short press: Cycle CH1~CH8 within current band
· LED 显示：数码管直接展示当前信道编号CH1~CH8
LED Display: Digital tube shows active channel number CH1~CH8
· 静置3 秒无按键操作，系统自动保存并锁定当前频段与信道
Auto save & lock settings after 3s idle time
6.2 PW 功率档位切换键 PW Button
· 长按按键1 秒： 进入功率设置模式Hold for 1s: Enter power adjustment mode
· 短按按键单次： 循环切换10W 低档 / 20W 高档 Single short press: Toggle between 10W low power / 20W high power
· LED 功率状态指示表
功率档位Power Level | 输出功率Output Power | LED 闪烁提示 LED Indication | 适用场景Application |
低档Standard Mode | 10 W | 字符L 每 0.5 秒闪烁一次 "L" flashes every 0.5s | 室内调试、近距离短距离传输Indoor debugging, short-range transmission |
高档High Power Mode | 20 W | 字符H 每 0.5 秒闪烁一次 "H" flashes every 0.5s | 开阔视距远距离传输，最远15~30km Open line-of-sight long-range transmission (15–30km max) |
· 自动锁定： 静置3 秒自动锁定功率档位，断电记忆保存 Power setting auto-locked after 3s idle, saved after power off.
7 三频段信道频点对照表 / Frequency Channel Table
说明： 下表为设备出厂标准频点值，设备LED 显示数值与下表一一对应；用户通过 CH 键切换信道选择对应频率。
Note: The table shows factory default frequency values, consistent with LED display; switch channels via CH button to select target frequency.
7.1 1300–1500MHz 频段（1.3G 频段）
信道编号Channel | CH1 | CH2 | CH3 | CH4 | CH5 | CH6 | CH7 | CH8 |
中心频率(MHz) Center Frequency | 1320 | 1340 | 1360 | 1380 | 1400 | 1420 | 1440 | 1460 |
7.2 3200–3600MHz 频段（3.3G 频段）
信道编号Channel | CH1 | CH2 | CH3 | CH4 | CH5 | CH6 | CH7 | CH8 |
中心频率(MHz) Center Frequency | 3300 | 3320 | 3340 | 3360 | 3380 | 3400 | 3420 | 3440 |
7.3 4500–4675MHz 频段（4.5G 频段）
信道编号Channel | CH1 | CH2 | CH3 | CH4 | CH5 | CH6 | CH7 | CH8 |
中心频率(MHz) Center Frequency | 4500 | 4525 | 4550 | 4575 | 4600 | 4625 | 4650 | 4675 |
7.4 4990–5200MHz 频段（4.9G 频段）
信道编号Channel | CH1 | CH2 | CH3 | CH4 | CH5 | CH6 | CH7 | CH8 |
中心频率(MHz) Center Frequency | 4990 | 5020 | 5050 | 5080 | 5110 | 5140 | 5170 | 5200 |
7.5 5700–5900MHz 频段（5.8G频段）
信道编号Channel | CH1 | CH2 | CH3 | CH4 | CH5 | CH6 | CH7 | CH8 |
中心频率(MHz) Center Frequency | 5705 | 5725 | 5745 | 5765 | 5785 | 5805 | 5825 | 5845 |
8 硬件接口说明 / Hardware Interface Description
电源输入接口/ Power Input Port
直流DC 10–33V 输入，严格区分正负极；建议搭配纹波小、电流余量充足的稳压电源，避免电压波动导致画面卡顿、功率不稳。 DC 10–33V input with positive/negative polarity distinction. Stable power supply with sufficient current margin is recommended to avoid picture lag or unstable RF power caused by voltage fluctuation.
视频输入接口/ Video Input Port
标准模拟CVBS 视频信号输入，自动兼容 PAL、NTSC 摄像头 / 航拍相机视频输出，支持同轴 AV 线连接。 Standard analog CVBS input, auto compatible with PAL/NTSC aerial camera, connected via coaxial AV cable.
SMA 射频天线接口 / SMA RF Antenna Port
50Ω 标准 SMA 母座，必须安装匹配天线后再接通电源；严禁空载上电发射射频信号。 50Ω standard SMA female connector. Always mount matched antenna before power on; RF transmission without antenna is strictly prohibited.
9 功率档位使用建议 / Power Level Application Guide
功率档位Power Level | 推荐使用场景Recommended Application |
10W 低档 | 室内调试、近距离试飞、多设备同场作业（减少干扰）、合规短距离场景Indoor debugging, short-distance test flight, multi-device co-working (reduce interference), legal short-range scenarios |
20W 高档 | 野外开阔无遮挡视距传输、长距离无人机巡检、车载远程监控（视距最大15–40km） Open unobstructed outdoor transmission, long-range UAV inspection, vehicle remote monitoring (max 15–40km line-of-sight) |
10 安全使用注意事项 / Safety & Usage Precautions
10.1 散热要求 / Cooling Requirement
设备高功率工作时发热量较大，安装位置必须保证空气流通，禁止封闭包裹、紧贴隔热材质；设备过热会自动触发热保护，降低发射功率甚至切断射频输出。The unit generates heavy heat under high-power operation. Ensure sufficient ventilation, avoid fully enclosed installation or contact with thermal insulation materials. Overheating will trigger thermal protection, reducing RF power or cutting off transmission.
10.2 电源规范 / Power Specification
供电电压必须稳定在DC10–33V 区间，接线时确认电源正负极，反接会直接烧毁内部电路；电池供电机型需预留充足放电电流。 Input voltage must stay within DC10–33V range. Confirm polarity before wiring; reverse connection will permanently damage internal circuits. Sufficient discharge current is required for battery-powered systems.
10.3 天线强制规范 / Antenna Mandatory Rule
禁止无天线通电发射！ 空载射频输出会瞬间击穿功放芯片，造成不可逆硬件损坏，此类损坏不在保修范围。Never power on without antenna connected. RF output without load will burn power amplifier instantly, irreversible hardware damage excluded from warranty.
10.4 设备防护 / Protection
避免雨水、粉尘、剧烈震动冲击；户外使用建议搭配防水外壳，长期闲置断开电源存放于干燥常温环境。Avoid rain, dust and violent vibration. Outdoor application requires waterproof housing; disconnect power and store in dry room temperature for long-term standby.
10.5 操作规范 / Operation Standard
仅使用本手册规定方式切换频段、信道、功率；禁止拆机、改装射频电路、更换非原厂功放配件。Adjust band, channel and power only per manual instructions. Unauthorized disassembly, RF circuit modification or non-original power amplifier replacement are forbidden.
11 无线电合规声明 / Radio Regulatory Compliance Statement
· 本设备射频发射功率、工作频段仅适用于符合当地无线电管理法规的授权应用场景；The RF transmit power and operating bands of this device shall only be used in authorized scenarios compliant with local radio regulatory laws.
· 商用、机载、车载作业前，用户需自行完成无线电设备备案、频段使用许可等相关手续；Before commercial, UAV or vehicle deployment, users shall complete radio equipment filing and frequency license procedures independently.
· 严禁在机场、军事管制区、涉密区域、人群密集城区违规使用大功率射频发射设备，违规使用将承担相应法律责任。High-power RF transmitters are prohibited from illegal operation near airports, military restricted zones, confidential areas and densely populated urban areas. Users shall bear all corresponding legal liabilities for violations.
