Sorry. I accidentally removed this topic and had to re-create it. DOH
BTW. The radios are much much better than I thought w/ respect to drift. The absolute accuracy is the error at room temp + the drift can add up to more than 10KHz. Worse case one radio goes high the other low, you get 20K. I'm hoping to get that to about 1KHz.
Anyway, the 'pairing'. I don't like that term, the 'Freq Cal' would work something like this.
1. Two Motes, One mote(slave) listens to the other(ref) in a one time cal mode and stores the val of the FEI
register to eeprom. From then on it is always added to the desired freq.
2. Lots of Motes. Same as above using the same reference(best). Cal new motes with other cal'd motes(errors accumalate with the generations).
3. Expensive way. Use a freq counter at 915, or on the clock out pin 32MHz/n. Store to coef to eeprom.
4. Check with Felix. Maybe he could provide cal'd radios as an add-on service.
