RFM12 with picbasic_pro

[iw2fvo]

Thanks a lot Paul: it is great !

Best regards,
Ambrogio
Iw2FVO

[lyoung298]

Thanks Paul. I was looking for something similar to this.

[prstein]

Ambrogio and lyoung298,

Glad you like it. I'm pretty happy with the RFM22 and I'm glad others are using them too.

Best Regards,
Paul

[iw2fvo]

Paul,
just a question: what is the max operative range of those RFm22 devices ?
I do have a couple of RFM12b but one is broken ( shipment problem ! ) so at the moment i can not test them.
Thanks
Ambrogio

Ambrogio and lyoung298,

Glad you like it. I'm pretty happy with the RFM22 and I'm glad others are using them too.

Best Regards,
Paul

[lyoung298]

The datasheet for the RFM22 reads sensitivity of -121dBm. So line of sight range of 3000ft should be possible. Similar modules from Linx has a typical receiver sensitivity of -112 dBm. Baud rate also can effect range. Higher baud rates normally decrease range.

[prstein]

The choice of antenna makes a huge difference as well. My RFM22s are 916MHz and I'm using a tiny little antenna (here). I've only tested to about 30 meters but under awful conditions (through trees and several walls). That was also after setting the transmit power low enough to comply with the U.S. FCC requirements.

Best Regards,
Paul