Bộ phát và thu video không dây cho camera ẩn

Wireless Video Transmitter and Receiver for Hidden Cameras

A customer recently contacted us looking for a high-reliability wireless video transmission solution for a specialized inspection and monitoring project. The request focused heavily on non-line-of-sight (NLOS) hiệu suất, low-frequency operation, encryption security, and portable deployment.

Below is part of the customer’s original inquiry:

“I am looking to purchase a complete, high-reliability wireless video transmission kit for a specialized inspection and monitoring application. This is a private purchase to be shipped directly to my logistics forwarder in Miami, FL.

Please provide pricing and availability for a complete kit consisting of the following modules and engineering requirements:

1. Portable COFDM Transmitter (Số lượng: 1 đơn vị)

• điều chế: COFDM (Ghép kênh phân chia tần số trực giao được mã hóa) for NLOS operation.
• Operational Frequency: UHF / Sub-GHz band (Preferably adjustable or fixed within the 300 MHz đến 900 Phạm vi MHz). chú thích: Standard 1.2GHz or 2.4GHz modules are not acceptable for this project due to building penetration requirements.
• băng thông: Narrowband operation support (1.25 / 2.5 / 4 / 8 MHz).
• Công suất đầu ra RF: Low-power design suitable for body-worn usage (200mW to 500mW maximum). Must include a low-profile aluminum heat sink.
• Bảo vệ: Native hardware encryption (AES-128 hoặc AES-256) embedded in the primary transmission stream.
• Cung cấp năng lượng & Tactical Control (Critical Requirement): DC connector interface compatible with compact external 12V rechargeable Lithium battery packs. The DC power cable must feature a low-profile, inline tactical toggle/rocker switch (pocket-sized) to allow the operator to physically turn the transmitter ON and OFF instantly. This is mandatory to prevent continuous RF emission and mitigate the risk of detection by RF sweepers.

2. Hidden Pinhole Micro Camera Component (Số lượng: 1 đơn vị)

• Nghị quyết: Minimum 1080p (Full HD) đầu ra video.
• Yếu tố hình thức: Pinhole lens covertly integrated or adaptable with interchangeable shirt-button caps.
• Lens Calibration (Phê bình): Must be a Macro Lens with Manual Close-Range Focus Adjustment. The optics must be laboratory-calibrated to provide crisp, ultra-sharp focus on written text/documents located at a distance of 30cm to 50cm from the camera body.
• giao diện: Direct connection (via flat ribbon cable or micro-HDMI) to the COFDM transmitter module.

3. Portable COFDM Receiver (Số lượng: 1 đơn vị)

Giao diện đầu ra: Must include an HDMI port and an integrated UVC (Lớp video USB) output or internal capture card (USB 3.0 giao diện). This is required to stream real-time video directly into a laptop via USB as a plug-and-play webcam device.”

Tuning: Dual-channel receiver matching the transmitter’s frequency band, featuring Antenna Diversity to prevent signal fading during movement.

The customer specifically requested:

• COFDM modulation for strong NLOS transmission
• UHF/Sub-GHz frequency operation between 300MHz and 900MHz
• Narrow bandwidth support (1.25 / 2.5 / 4 / 8 MHz)
• Low-power body-worn transmitter
• AES hardware encryption
• Portable 12V battery operation
• Dual diversity receiver
• HDMI and USB-compatible video output
• Hidden pinhole macro-focus camera support

Giải pháp được đề xuất: Mô hình 1726

Based on the customer’s requirements, we recommended our Model 1726 Wireless Video Transmitter and Receiver for Hidden Cameras.

This system is designed for strong diffraction and penetration performance in non-line-of-sight environments such as buildings, urban structures, and obstructed areas.

Excellent NLOS Penetration Performance

Mô hình 1726 uses COFDM modulation technology, which offers excellent anti-interference capability and strong diffraction performance.

Even in non-line-of-sight conditions, the system maintains stable video transmission.

Field test video:
https://youtu.be/LDcn58FvDYk?si=k1wBGHsVydWMDztE

Dải tần số: 300MHz to 860MHz

The customer requested operation in the UHF/Sub-GHz band because lower frequencies provide better wall penetration than standard 1.2GHz or 2.4GHz systems.

Trả lời của chúng tôi:

“Operating frequency can be customized within 300MHz to 860MHz. The default configuration is 600MHz.”

This flexible frequency configuration makes the system suitable for many regional RF environments and customized applications.

Narrowband COFDM Bandwidth Support

The customer required selectable bandwidths including:

• 1.25MHz
• 2.5MHz
• 4MHz
• 8MHz

Our recommendation was 4MHz bandwidth because it provides a strong balance between image quality and transmission stability.

While ultra-narrow bandwidth modes such as 1.5MHz can increase transmission robustness, they may significantly reduce video quality.

Adjustable RF Output Power

The customer requested low-power body-worn operation between 200mW and 500mW.

Our standard transmitter ships with 1W output power, but software configuration allows limiting the RF output to 500mW.

This helps reduce heat generation and RF exposure while maintaining stable performance.

Aluminum Housing with Cooling Design

The transmitter enclosure uses an aluminum alloy shell with:

• Heat dissipation vents
• Integrated cooling fan
• Compact portable design

Thông số kỹ thuật:

• Kích thước: 105 × 60 × 27 mm
• Cân nặng: khoảng 140 gram

AES Encryption for Secure Video Transmission

Security was one of the customer’s critical requirements.

Mô hình 1726 supports AES-128 encrypted video transmission to protect sensitive data and prevent unauthorized reception.

Trả lời của chúng tôi:

“AES-128 encryption is supported to provide high-level transmission security and privacy protection.”

12V Battery Power Support

The transmitter operates from a 12V DC input and supports portable rechargeable battery packs.

The customer requested a tactical inline power switch for rapid power control.

While we do not provide customized tactical switch cables, the transmitter can easily integrate with third-party battery and inline switch solutions.

Khả năng tương thích của máy ảnh

The customer requested a hidden pinhole macro-focus camera with document-reading capability.

Hiện tại, we do not manufacture covert cameras.

Tuy nhiên, our transmitter supports:

• Đầu vào máy ảnh HDMI
• CVBS analog camera input

This allows customers to integrate compatible third-party cameras based on their own project requirements.

Dual Diversity COFDM Receiver

The portable receiver includes:

• Dual-antenna diversity reception
• đầu ra HDMI
• Đầu ra CVBS
• Ethernet video output

Diversity reception significantly improves signal stability during movement and helps reduce fading.

Computer Video Streaming Support

The customer requested direct laptop integration.

Our receiver supports network video streaming through the Ethernet port.

Ngoài ra:

• USB and TF card interfaces support local recording
• USB does not function as a direct UVC webcam output

For laptop monitoring, Ethernet connection is recommended.

Pricing and Shipping

Quoted pricing for the customer:

• COFDM transmitter and receiver system: đô la 1,376
• Shipping to Miami, Florida: đô la 198
• Airtel Tanzania. import duty included

Tìm hiểu thêm

More technical details about the Model 1726 Wireless Video Transmitter and Receiver for Hidden Cameras are available here:

Bộ truyền và nhận video không dây cho máy ảnh, HDMI HD H265 264 bộ mã hóa 1W/2.5W PA 1080P60 Vcan1726

If you require customized frequency options, Truyền mã hóa, or long-range wireless video solutions, feel free to contact our engineering team.