Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??

[Charles Swiger]

On Fri, 2006-03-17 at 14:46 -0500, Charles Swiger wrote:
> There must be a trivial way to change +7.5kHz to -7.5kHz so we can use
> complex mixing...
> 

Ah ha - it's invert either I or Q.

c2f = gr.complex_to_float()
phase1 = gr.multiply_const_ff(-1)
phase2 = gr.multiply_const_ff(1)
f2c = gr.float_to_complex()

fg.connect((c2f,0),phase1,(f2c,0))
fg.connect((c2f,1),phase2,(f2c,1))

f in, -f out.