Two sets of Tx power level calibration profiles have been created so far:
rf3166-ideal and rf3166-fcdev3b.  As implied in the naming, both sets of
profiles are meant for GSM MS designs using the RF3166 PA as used by Openmoko,
following OM's triband board design for the RF section.  The only difference
between the two versions is in the target dBm number for the maximum power
level for the low band (EGSM or GSM850): it is 33 dBm as the GSM 05.05 spec
calls for in the rf3166-ideal-900 profile, but the rf3166-fcdev3b-900 profile
has it shifted down to 32.2 dBm, similarly to how TI did it on their I-Sample
(LoCosto) boards.  The rf3166-ideal profile set works for recalibrating
Openmoko-made GTA02 devices, producing even better Tx power levels than OM's
original (set to unshifted GSM 05.05 spec targets), but on our own FCDEV3B
boards we are not able to get the full 33 dBm Tx output in the low band, hence
the rf3166-fcdev3b profile set with the shifted target.