[hpsdr] AGC, Digital Modes, and Wide Bandwidths.

[Berndt Wulf]

G'day Mike,

I'm running WSJT-X 1.6.0 and PowerSDR and this works fine. In presence 
of very strong signals weaker signals are still decoded fine. I'm using 
the AGC FAST and AGC Gain=120 settings to work WSPR on 630m, which 
inherently is a very noisy band.

73, Berndt
VK5ABN

On 21/08/2016 3:32 AM, Mike F wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> I often do digital modes with my HPSDR system, PowerSDR and either 
> FLDIGI or WSJT-X.
>
> When using a 3-4KHz bandwidth and WSJT-X, I have noted that if there 
> is one very large signal in the bandwidth, the rest of the bandwidth 
> flatlines.  This is obviously an effect of the AGC on the rest of the 
> signals in the band.  I have played with AGC settings to try to 
> control this effect, but am not really satisfied with any of the 
> results.  I thought "FIXED" might be the best way, but am not sure.
>
> I assume that FLDIGI does the same thing. Haven't used it much lately.
>
> Any Thoughts?
>
> Mike, K7SR
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at openhpsdr.org
> Subscription help: 
> http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
> HPSDR web page: http://openhpsdr.org
> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/