Commands:

'S' ... enables GFSK test sending mode
'E' ... enables GFSK test recieving mode
'B' ... enables Beacon-Mode, i.e. device enters OOK (OnOffKeying) mode and periodically enables the carrier for 1000ms and then pauses for 200ms

S and E can be actived at the same time
B deactivates S and E
S or E deactivate B

Each use of S,E or B reinitialize C1101 and thus reset all adjustments.

'R' ... dumps the value of C1101 registers


Changing GFSK frequency deviation:
'D' ... increases GFSK frequency deviation
'd' ... decreases GFSK frequency deviation
obviously not much use in Beacon-Mode


Using the Beacon Test Mode:
'B' ... reinitializes C1101 and resets frequency to 435.199677, then starts OOK transmission
'?' ... shows current frequency
'#' ... increases frequency by 10 MHz
'_' ... decreases frequency by 10 MHz
'+' ... increases frequency by 1 MHz
'-' ... decreases frequency by 1 MHz
':' ... increases frequency by 100 KHz
'.' ... decreases frequency by 100 KHz
'f' ... sets frequency to previously adjusted valued. e.g. restore frequency after disabling, then reenabling Beacon-Mode 'B'