How to build an HRPT receiver with USRPB100

Hello,

I’ve searched some information about HRPT format. I know the modulation
that is used and the frame format, but I have no idea how to built it
using
GNU radio. Furthermore, I checked the gr-noaa repository but it hardly
appears information about the different block used for HRPT demodulation
and decoding (HRPT PLL, deframer…) There are a lot of parameters whose
function or purpose is unknown for me. Please I need some help.

Thank you in advance

Pablo F.