Re: [Discuss-gnuradio] Weaver SSB (was: gr.firdes_hilbert () usage)

[cswiger]

On Fri, 26 Nov 2004, Matt Ettus wrote:

>
> That should work.  But you don't need to have 2 filters on each side.  You 
> could
> combine lpf1i with lpf2i.  Same for the q side.
>
>

Well I tried that at first, but at the rf sampling rate (8e6),
1.8Khz cutoff, and 300hz width the system would  lock up
after taking just under 65536 bytes. No errors, just stops.
So I decided to break the filters into two easy chunks, one
at rf sampling decimates down to audio level with easy taps
and the other does the sharp 1.8Khz slicing at af sampling rate.

I've verified you just change gr.add_ff() to gr.sub_ff() and
get LSB. Looks good so far - will have to try it out in real
life this weekend ;)

--Chuck