Using wireless video transmitters inside pipes is a common and crucial application for inspection, maintenance and engineering operations. The main challenge lies in the fact that radio waves （especially at common frequencies such as 2.4GHz or 5.8GHz） cannot propagate well in metal pipes, and they will experience significant attenuation due to soil and water ，these are common environmental factors for pipes.

The following is the challenges, how it works and the best equipment for our customer.

The Core Challenge: Wireless video data signal transmission in metal pipes and particularly in high temperature environment

· Metal oil pipes: Choosing the right frequency is the most critical decision when designing a wireless transmission system for challenging environments like pipes, tunnels, or dense urban areas. So, we choose our 300-860 MHz frequency band 1W mini COFDM video transmitter, because the lower the frequency, the stronger the penetration ability. This effectively meets the customer's requirement for transmitting over 1 km NLOS range.

· high temperature environment

We designed the bottom of the transmitter to be fins and built-in efficient mini fan for cooling, in order to maximize the heat dissipation of the video transmitter, make it function properly.

Key Features to Look for in a Pipe Inspection Video Data Transmission System:

1. Camera Type: A waterproof, ruggedized camera on a crawler, rover, or push rod.

2. Transmitter Type: COFDM video transmitter.

3. Frequency: look for transmission systems using lower frequencies.

4. Antenna Design: The antenna on the transmitter should be as small as possible to navigate the pipe but optimized for the environment. The relay antenna at the pipe opening should be a directional high-gain antenna pointed down the pipe.

5. Recording & OSD: On-Screen Display (OSD) of data like distance pushed, time, and GPS location is invaluable. The ability to record video is essential for reporting.