The 45mhz crystal filter is likely rather narrow as well.
Perhaps have an option to replace the 45mhz crystal filter with something like this: ?
Mouser summary says it's 25khz wide, but datasheet says the 3db passband is typically +/- 25khz from center, so 50khz wide.
Don't have to stuff this sort of thing on all uBitx boards, not everybody will want a spectrum analyzer.
But would be nice if it was easy to hack in, with pads on the board for the PX1002 and AD8310.
Jerry
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On Wed, Jul 26, 2017 at 10:36 am, Jerry Gaffke wrote:
Maybe switch between the 45khz crystal filter, the 12mhz crystal filter, and analyzing the audio with an ADC.
Jerry, KE7ER
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