PM3 Commands Reference (Iceman Firmware):

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Current command:
lf simfsk --help


Simulate FSK tag from DemodBuffer or input. There are about four FSK modulations to know of.
FSK1  -  where fc/8 = high  and fc/5 = low
FSK1a -  is inverted FSK1,  ie:   fc/5 = high and fc/8 = low
FSK2  -  where fc/10 = high  and fc/8 = low
FSK2a -  is inverted FSK2,  ie:   fc/10 = high and fc/8 = low

NOTE: if you set one clock manually set them all manually

usage:
    lf simfsk [-hv] [-c <dec>] [--low <dec>] [--high <dec>] [--stt] [-d <hex>]

options:
    -h, --help                     This help
    -c, --clk <dec>                manually set clock - can autodetect if using DemodBuffer (default 64)
    --low <dec>                    manually set larger Field Clock
    --high <dec>                   manually set smaller Field Clock
    --stt                          TBD! - STT to enable a gap between playback repetitions (default: no gap)
    -d, --data <hex>               data to sim - omit to use DemodBuffer
    -v, --verbose                  verbose output

examples/notes:
    lf simfsk -c 40 --high 8 --low 5 -d 010203        -> FSK1  rf/40  data 010203
    lf simfsk -c 40 --high 5 --low 8 -d 010203        -> FSK1a rf/40  data 010203
    lf simfsk -c 64 --high 10 --low 8 -d 010203       -> FSK2  rf/64  data 010203
    lf simfsk -c 64 --high 8 --low 10 -d 010203       -> FSK2a rf/64  data 010203