On Tue, Aug 13, 2019 at 05:50 AM, Jack Purdum wrote:
Inexpensive DSP is incorporated into the JackAl board.
The JackAl board looks like it is a good all in one upgrade to the uBitx.?
So it looks like, in all but the more extreme cases, people are happy with DSP audio bandpass filters. Crystal CW filters can provide some additional protection from overloading from a strong close by frequency signal.
It would seem the reason for this is, the crystal filter may filter out the strong unwanted signal while the signals are still in the first stages of the IF chain. The signals are still relatively weak at this point and the undesired signal is removed before it can get amplified to the point that overloading starts to occur.?
Tom, wb6b
