Receiver not receiving from all senders about arduino-lora HOT 3 OPEN

You should use CAD (Channel Activity Detection) to make sure that the other sender isn't already transmitting: what you are seeing is most probably interferences between both senders, which are at times sending, or trying to, at the same time.

Unfortunately CAD hasn't been implemented in the original library, but I seem to remember someone has a fork with CAD added to it. This is the main weakness of this library – it has been abandoned, mostly, and various people have made an effort to improve it, but these improvements have by and far not been integrated in the original library.

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CAD has been merge via #334 but a release has not been done. I called for testing and none of the regulars responded. Additionally in that comment I pointed out, I believe, CAD does not work the way most people are assuming. I wanted to run some tests to confirm this but haven't had the free time (or pay) to get to this.

#334 (comment)

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Oh thanks I wasn't aware (OBVIOUSLY!)... How could I help with testing?

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