Dfidalgo:
Today I received the Zitron PCB's, look much better in my hands than here in the pictures !
Now just need to buy the RFM22.
Cool! Let me know how it goes!
Mauzer:
What differences are between RFM22-S1 and RFM22-S2? Only the crystal size?
I heard someone mention that the bigger crystals have better frequency tolerances, but that could be just a rumour.