The 4G LTE modules we use are brand new and have only been available for a few weeks. I just stocked the LTE bee adapter board in our Amazon storefront last week too, so the materials you need for bu
The 4G LTE modules we use are brand new and have only been available for a few weeks. I just stocked the LTE bee adapter board in our Amazon storefront last week too, so the materials you need for building the signal tester are so new that I haven’t had a chance to document the building and programming process. I’ll be building a few more once I get back in the office in early August after all my workshop and conference travels currently happening, so hopefully I can post some instructions and code so you can build your own. In the meantime, you can use any AT&T cell phone to see if you’ve got LTE coverage. When we were using the older 2G GPRSbee modules, they utilize T-mobile networks that are starting to be phased out all over the country, so having a dedicated 2G T-mobile signal tester was the only way to test for the specific coverage that those modules needed. It also helps that my new LTEbee adapter has a signal strength indicator LED on it so just powering the board with a module attached will give you an instant indicator of signal availability and strength, even without programming the Mayfly and having a dedicated LCD display.