TX Flow Graph Clarification | GPredict Doppler

[VinayakM123]

Hi,

I am using the GPredict Doppler OOT module in GNU Radio for doppler correction. As per an article by @daniestevez I got an idea on how to setup the receive flowgraph. I am attaching a screenshot below hope.

I am still confused on how to use the GPredict Doppler block in my transmit flow graph before the UHD Sink.

I kindly request a hep to solve this issue.