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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? Brian Johnson Kutta
Consulting Inc. Work:
602-896-1976 Cell
: 623-451-9417 |
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