|Subject:||[Discuss-gnuradio] Using the gr_agc_ff block|
|Date:||Tue, 16 May 2006 08:07:13 -0700|
I am trying to use the gr_agc_ff block in my SSB code but I am not sure if I am doing it right. The only example I found of this function’s usage is in gnuradio-examples/python/apps/hf_radio/radio.py … and it is commented out. Like the author of that example, I connected the AGC block right before the audio_sink (actually … AGC -> Volume Multiplier -> audit_sink). It seems to work, but the effects aren’t as dramatic as I had hoped. I can definitely pull in signals that are not in range without AGC.
I played around with the functions parameters and got even better results when I kicked up the reference and gain parameters to 2 and 3.
Can anyone confirm that I am using this block as intended? It seems like it should be used earlier in the demodulation. Also, what units are we talking about for the reference and gain parameters – is it volts for the reference value and db for the gain?
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