Long range radio indoor

[Sweebee]

I'm making remotes with 3 buttons that have to transmit the signal to the central receiver. These remotes are in different locations in a building with a lot of walls.

Which radio should i use?

I had some nrfs but they aren't strong enough (tested with the LNA PA)

How about the RFM69HW 433mhz? And is there a way to lower the bandwidth with mysensors, so the range will be increased?

[carlierd]

Hello,

I think that the best candidat is the RFM68HW. In 868 or 915 MHz will be better. I used the 868 ones and for the moment there is no problem. I have two walls between my garage and my gateway and it's working perfectly !

David.

[TD22057]

The regular RFM69 has much better range than the NRF so you might not need the high power version at all. It does require you buy/build your own antenna though. I'm using the 915 MHz version and can cover my whole house, yard, and garage with a small helical antenna I bought on ebay (the NRF couldn't do that even with an external antenna). Just search for "XXX hz helical antenna) on ebay to see a lot of options.