Forum: GNU Radio Difference between a new and old Costas loop

Hello for all

I Have my program with old gr.costas_loop_cc and I would like to adapt
it to the new version of GNURADIO 3.6.1 of Yesterday :)

My old costas loop present like that :

gr.costas_loop_cc(0.05,  # PLL first order gain
#                 0.00025,   # PLL second order gain
#                 0.05,    # Max frequency  offset rad/sample
#                 -0.05,   # Min frequency offset rad/sample
#                 2)             # BPSK

My old code contain 5 parameters and in the new bloc we have just 2
parameters, can you give me some explanations about the difference
between a old and a new one and  what is the value of the parameters to
use to replace the old one?

Thank you for all.

Hello,

This Article may help out, about loop bandwidth and all.

http://gnuradio.squarespace.com/blog/2011/8/13/con...







Regards,
Sreenath Kambala
srinathkv.royal@gmail.com

Thank you for the link.