隠しカメラ用ワイヤレスビデオ送信機および受信機

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) パフォーマンス, 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, フロリダ州.

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

1. Portable COFDM Transmitter (量: 1 単位)

• 変調: COFDM (コード化された直交周波数分割多重方式) for NLOS operation.
• Operational Frequency: UHF / Sub-GHz band (Preferably adjustable or fixed within the 300 MHzから 900 MHz範囲). 注意: Standard 1.2GHz or 2.4GHz modules are not acceptable for this project due to building penetration requirements.
• 帯域幅: Narrowband operation support (1.25 / 2.5 / 4 / 8 メガヘルツ).
• RF出力電力: Low-power design suitable for body-worn usage (200mW to 500mW maximum). Must include a low-profile aluminum heat sink.
• セキュリティ: Native hardware encryption (AES-128 または AES-256) embedded in the primary transmission stream.
• 電源 & 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 (量: 1 単位)

• 解決: Minimum 1080p (フルHD) ビデオ出力.
• フォームファクタ: Pinhole lens covertly integrated or adaptable with interchangeable shirt-button caps.
• Lens Calibration (致命的): 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.
• インタフェース: Direct connection (via flat ribbon cable or micro-HDMI) to the COFDM transmitter module.

3. Portable COFDM Receiver (量: 1 単位)

出力インターフェース: Must include an HDMI port and an integrated UVC (USBビデオクラス) output or internal capture card (USB 3.0 インタフェース). 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 メガヘルツ)
• 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

推奨される解決策: モデル 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

モデル 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

周波数範囲: 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.

私たちの返答:

“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:

• 1.25メガヘルツ
• 2.5メガヘルツ
• 4メガヘルツ
• 8メガヘルツ

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

仕様書:

• サイズ: 105 × 60 × 27 ミリ
• 重量: 約 140 グラム

AES Encryption for Secure Video Transmission

Security was one of the customer’s critical requirements.

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

私たちの返答:

“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.

カメラの互換性

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

現在, we do not manufacture covert cameras.

しかしながら, our transmitter supports:

• HDMIカメラ入力
• 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
• HDMI出力
• CVBS出力
• 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.

さらに:

• 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: 米ドル 1,376
• Shipping to Miami, フロリダ: 米ドル 198
• 私たち. import duty included

フィリピンisdb-tewbs

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

カメラ用ワイヤレスビデオトランスミッターおよびレシーバー, HDMI HD H265 264 エンコーダー 1W/2.5W PA 1080P60 Vcan1726

If you require customized frequency options, 暗号化された送信, or long-range wireless video solutions, feel free to contact our engineering team.