FPV 175MHz COFDM数字VTX VRX无线视频发射器和接收器

FPV 175MHz COFDM数字VTX VRX无线视频发射器和接收器

特征

• 可以定制工作频率.
• 频率越低, 干扰概率越低.
• 带宽可以设置为2MB.
• 更强的衍射传输能力.

Default VTX VRX Setting

体重和大小

可自定义的选项

1. 频率 & 带宽

• 工作频率: 例如, 1.2–1.3 GHz, 2.4 兆赫, 5.8 兆赫, or custom frequency bands

• 信道带宽: 例如, 2 MHz, 4 MHz, 6 MHz

2. 传输功率 & 范围

• 输出功率: 可调整的 (例如, 100 mW, 500 mW, 1 w, 10 w)

• 传输范围: short-range (1–2 km) to long-range (50+ km)

• 电源电压: 5–36 V DC or custom range

3. 视频 & 音频接口

• 视频输入: HDMI, SDI, CVBS, or Ethernet/IP camera input

• 视频输出: HDMI, SDI, CVBS, or IP streaming (实时服务提供商, UDP)

• Audio input/output: analog or digital audio support

4. 编码 & 压缩

• 视频分辨率支持: 480p, 720p, 1080p, 或更高

• Compression options: H.264, H.265, or uncompressed for low-latency

• 帧率: 25 fps, 30 fps, 60 fps, or custom

5. 调制 & 解调

• COFDM modulation parameters can be customized for robustness vs. 潜伏

• Support for diversity reception with single or dual receiver setup

6. 控制 & 组态

• Onboard buttons or remote control for video/audio switching

• Remote management via web GUI or serial commands

• OSD (屏幕显示) overlay configuration

7. 物理设计

• Size and weight customization for drone payload requirements

• 连接器类型: SMA, MCX, N型, or custom

• Casing materials: 铝, 塑料, or custom colors

8. 特殊功能

• Anti-interference or frequency hopping features

• Low-latency mode for FPV racing

• Recording function or onboard storage option

• Support for mesh networking or multi-transmitter scenarios

常问问题

Q: For better video transmission, could you set the frequency to 170 MHz and increase the sensitivity?
一个: 是, we can customize it at 170Mhz, but 175Mhz is much better at sensitivity. 170Mhz is the lowest frequency range that the receiver can allow, and it would be better to set the center frequency at 175Mhz.

Q: Can I directly connect my drone’s 4S battery to the video transmitter?
一个: 是, our COFDM wireless video transmitter can operate directly from a 4S battery. It supports voltages down to 11 V.

Q: How does a 4S battery voltage work?
一个: Nominal voltage: 4 × 3.7 V = 14.8 V; Fully charged voltage: 4 × 4.2 V = 16.8 V; Safe discharge lower limit: 4 × 3.0 V = 12.0 V. Even when your battery voltage drops near 11 V, the transmitter will continue to operate safely.

Q: I purchased the 3W PA version. If I don’t need long-distance transmission, can I reduce the output power to 1W to save battery?
一个: 是, you can reduce the transmit power by adjusting the transmitter parameters on the configuration board.

Q: How do I adjust the transmit power via the transmitter parameter configuration board?
Please modify the 安泰信 (衰减) parameter in the transmitter settings. (see above picture). Power levels correspond to the following attenuation values:

• 0 分贝 ≈ 3-watt PA (最大功率)

• –2 dB ≈ 2-watt PA

• –4 dB ≈ 1-watt PA

By increasing the attenuation value (more negative dB), the output power will be reduced accordingly.

注意: After adjusting the parameter, please save the settings and reboot the transmitter to ensure the new power level takes effect.

If you need assistance accessing the configuration interface, please contact our support team.

Q: My ground station antenna is only 9 米高. How can I maintain video signal from a UAV 30 km away without losing connection?
一个: Maintaining a stable video link at such a distance depends primarily on 视线 between the UAV and the ground station. To optimize reception:

1. Do not extend the antenna feed line.
   • Longer cables introduce signal loss and reduce antenna sensitivity, which can worsen reception.
2. Elevate the receiver antenna as high as possible.
   • Place the antenna on a mast, tower, or any elevated structure to improve line-of-sight.
3. Use high-gain antennas if allowed.
   • Directional antennas such as Yagi or parabolic can help focus signal reception over long distances.
4. Minimize obstacles and interference.
   • Ensure there are no buildings, 树木, or other obstructions between the UAV and the antenna.

提示: The higher the antenna, the farther the radio horizon extends, greatly improving long-distance signal reliability. Even a modest increase from 9 m to 15–20 m can make a significant difference for a 30 公里范围.

更多

1. 核心技术规格

• 频率范围:

  • 在内部运行 170–860 MHz 默认, 同 175 兆赫 可以通过定制的中心频率调整实现 (目标频率周围的±15 MHz带宽) .

  • 例子: 订购 175 MHz系统配置功率放大器 (PA) 和天线 160–190 MHz, 最好在175MHz时性能.

• 调制 & 协议:

  • COFDM图传 (编码正交频分复用) 对于非视线的鲁棒信号弹性 (NLOS) 环境.

  • 支持 AES-128加密 用于安全视频传输.

• 功率输出:

  • 可配置 1W至50W (默认3W). 更高的功率扩展范围，但增加了热量/功耗.

  • 能源管理: 通过配置工具进行衰减调整 (例如, -4dB ≈ 1W).

• 潜伏:

  • <150 女士 用于模拟CVB的输入 (适用于FPV无人机).

  • 500–600毫秒 对于HDMI/SDI输入 (在广播系统中常见).

• 范围性能:

  • THE (视线): 取决于 50 千米 (3你不), 110 千米 (10你不).

  • NLOS (非损失): 1–3公里在城市地区.

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2. 自定义选项

• 频率调整:

  • 指定中心频率 (例如, 175 兆赫) 在订单期间. 然后将PA/天线定制为 ±15 MHz 周围.

• 带宽灵活性:

  • 可调节的 2–8 MHz带宽 (较低=更好的衍射; 更高=更好的图像质量).

• 天线 & PA匹配:

  • 定向天线 (八木, 螺旋) 远程需要. 全向天线将范围降​​低 50%.

• 功率缩放:

  • PA输出可自定义从1W到50W.

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3. 兼容性 & 接口

• 视频输入/输出:

  • VTX输入: 模拟CVB (PAL / NTSC), HDMI, 或SDI Vcan1726.

  • VRX输出: HDMI, CVBS.

• 数据 & 控制:

  • UART/串行端口用于参数配置 (频率, 加密).

  • 局限性: 没有基于信号强度的自动功率调节.

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4. 真实部署注释

• 热管理:

  • 3W+ PA 需要散热器 + 主动冷却 (粉丝). 过热触发自动射击.

• 合规:

  • >1W传输 大多数国家的HAM许可.

• 范围与. 环境:

  • UBBAN NLOS: ≤3km | 郊区: 10–15公里 | 海洋/空中Los: 50–110公里.

• 接收器多样性:

  • 双 - 安特纳纳VRX系统减轻信号损失 (例如, 灵敏度: -100 dBm的).