A radio wave is like light. Behind a wall you will have a shadow and no sunshine. A big part of the radio wave will be eliminated behind a metal plate. Just put your mobile phone inside the container and try to catch a GSM or GPS signal.
If you plan to design a GSM / GPS tracking device, then the IoT M2M Cookbook will be helpful. It explains in detail how to develop a tracking device on wireless modules.
What type of information were you planning on communicating? Was it vehicle/ product tracking or voice/ camera communication? There are devices that you can use that don’t require cumbersome antenna configurations. For instance, the GT-540-3GWA, from ICP DAS, can do location tracking and has I/O ports for monitoring specific data in your mobile vehicles.
The GPS antenna is actually a small magnetic nub that can be snapped easily onto any metallic surface in the vehicle and does not need hard-wired antennas.
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Hi to all
1º Is there a easy way to gain comunication inside truck or container in such a way that no antenna outside is needed for GPS /GSM?
2º Is possible and is there an easy way to convert the metal box of truck or container (reefer) in a big antenna so no cables or devices
outside expose to damage or vandalism.
I know is complex but who know maybe some body already has solution to comunicate when in cargo boat full of containers.
Best regards to every one