[aprssig] Building a new digi (RX performance?)

Scott Miller scott at opentrac.org
Thu Apr 2 12:46:12 EDT 2009

> I use the TH-D7 as a bench mark, since so many of them are out
> there, and they are an all-in one factory integrated receiver
> and decoding system.  I have found that they can decode signals
> down to one bar on the LCD display.  We measured that minimum
> signal as -117 dBm 
> I wonder if you have done any testing of your combination as to
> on-air receive and packet decode performance?

I just checked on the bench again, and it's decoding at -116 dBm, minus 
1 N connector and 2 BNCs worth of insertion loss.


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