EmonTx, located about 50 feet away, has been monitoring the pumps on my water system for two years. Recently it stopped being received by the EmonPi. Neither a reset nor a power cycle, after which the EmonTx indicates it is transmitting, corrects it. A reboot of the EmonPi was tried also and did not fix the problem. When the EmonTx is moved to within 6 feet of the EmonPi it works. There have been no new devices added here that operate on the 433 MHz frequency.
Hello @artic4ursa I assume the antennae are securely fitted? Might be worth checking the circuit boards around the radio modules for any signs of damage?