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@Snyfir if they can't work anyway, why do you want to filter them?

@Snyfir thanks for explaining. How come you want the B sensors to be disabled when the power is off? Why can’t they be allowed to continue working?

@Snyfir could you share more details on why you don’t want to go through that repeater?

@APL2017 a very simple node, yes. But a node using a sensor library can often need more flash and ram than a gateway. I have tried to fit things into the atmega168 (I also bought wrong devices) but gave up. Unless you think it is a fun and interesting challenge, it will not be worth the time.

@cabat no. The define specifies which bit (bit number 0) to change when changing the register. The value of the register is not set by the define.

@evb done

@APL2017 how much is left?

Welcome to the forum @mitchdes

Yes, you are correct.

@skywatch that's incorrect. The reason sdr is discussed in this thread is because yveaux said

if you have a cheap sdr lying around you could use that to verify transmission frequencies and signal levels to some extent

@skywatch why would the rtlsdr be insufficient for this task?