Re: AM demodulation

[Albin Stigö]

Hi Barry,

Some thoughts:

You have a large DC spike at the center, try using the frequency xlating fir filter to tune an offset frequency.

Why don't you decimate at the channel filter?

Try observing the signal at various points using the frequency sink.

Good luck,

Albin SM6WJM

On Sat, Oct 26, 2019, 21:02 Barry Duggan <address@hidden> wrote:

Hi,

I've been working on a gnuradio AM broadcast receiver, and have found
that the tuning is very critical to obtaining clear audio. My flowgraph
can be seen at https://wiki.gnuradio.org/index.php/File:FunCube_AM.png.
Are there any alternate demodulation methods which are not so sensitive
to exact tuning?

Thanks,
--
Barry Duggan KV4FV