I have been trying and trying to succeed with the openlrs for months now, and have random on and off successes and failures. I have bought 2 modules and 2 receivers, and at the moment I cannot get any combo to work, and I have run out of ideas or resources to move on. I get about as much range as a module with no antenna would get, although i have never operated without an antenna, used 5v to program, or done anything to disrupt the system's performance. This is a peculiar thing to ask I guess, but I will send both sets of orangerx openlrs tx and rx to anyone who thinks they can diagnose/fix them (preferably in the united states). (with a reward of course). Sorry if this is an unacceptable post, but I have run out of options.