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B-L072Z-LRWAN1: improving the reach

Question asked by Mikhail Soloviev on Nov 16, 2017
Latest reply on Nov 17, 2017 by Clive One

I purchased three B-L072Z-LRWAN1 nodes yesterday and started my long awaited experimenting. The distance while maintaining stable communication between two B-L072Z-LRWAN1 nodes is a bit of a dissapointment. After having used nRF24 + PA + LNA and reaching up to 1km, I was now hoping for a miracle in a tiny pack


While the LoRa community claims >15km, I can barely get 1km with these units. I presume 15km is an extrem. However I hope things can be done better (at least up to 5km).


Some obvious concerns are the antenna supplied in the box. It is a 4cm one. Another concern is antenna imedance matching. As it says on the schematics, temporarily replaced by 0Ohm resistors. Does anyone have an idea what this means? Has anyone tried to populate those pads with macthing components? Did it help?


Please share your thoughts on improving distance with B-L072Z-LRWAN1