[Discuss-gnuradio] DBPSK Modulation

[Muhammad Abrar]

i want to do DBPSK modulation on 16 KHz Carrier, but didi not fine any option to set carrier frequency in DBPSK block in GRC or in dbpsk.py. Please guide me.

second question where modulation_utilites  and psk are preent as we import them like 
from gnuradio import modulation_utilities
import psk 

Thanks