[W-MBUS] could you see a problem in module sensitivity without power on VCC_PA Pin? You can leave the VCC_PA unconnected if you only run the module in RX mode without any sensitivity degradation. Last Update: September 22, 2017 September 22, 2017 964 Wireless M-Bus Q&A Related Knowledge Base Posts -[W-MBUS] “Regarding the modulation, I have a question about setting the modulation method. In my measurements , I changed the RF frequency with the volatile ‘C’ command. There is no volatile command to change the modulation method, so I left it at default. Then I find that the message transmission time at RF is the same for all channels, suggesting that the modulation scheme is the same. Is this the case, and is the default modulation valid for all channels? I need not be compatible with strict EN 13757. “[W-MBUS] “We are following observations on the MBUS3 repeater 1. Repeater repeats the message after Random delay we have observed it as up to 20 seconds. 2. Repeater does not repeat the message in the sequence it is received . 3. Sometimes message does not get repeated. We have tested this when with the Transmitter transmits every 3 seconds and at the receiver it is replied within 500 mSec of received message. Can you please give your comments on these observations. “[W-MBUS] I have a question about version protocol. Wet uses the old version of the protocol, is this compatible to the new version?