November 28, 2013
about a year ago
As you say it is very dependent. I’m currently getting a 1km'ish in town (low rise houses) out of the Modtronics modules. I’ve done a small amount of testing in open terrain and I’ve got many km’s out of them. The RFM22B modules have excellent range.
I’ve got this item, which is good, but if you want something with better performance I’d probably recommend the Modtronics RFM22B Breakout
I’ve used both the sparkfun and Modtronics version. I have them setup on breadboards and have been controlling them with Arduino’s (there’s a really good Arduino RFM22B library out there). They both work great, except I get about 150m further range out of the Modtronics version and that is just using the basic stub antenna they sell. Attach a Yagi antenna or similar and you’d get heaps further again.
Good radios the RFM22Bs!
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