[aprssig] Building a new digi (RX performance?)
Bill Vodall WA7NWP
wa7nwp at gmail.com
Thu Apr 2 12:47:31 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.
With or without pre-emphasis? That can make a major difference in
packet decoding depending on the sending stations setup.
Bill - WA7NWP
More information about the aprssig