The 150 filter is a little wider, a little better high frequency audio. It just sounds a little better.
Walt Cates, WD0GOF
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A majority of acceptance is not proof of correctness.
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My SR400 schematic appears to indicate 1650 and 1652.8 kHz crystals.? FL1 is a 1650 6-pole filter.
What is the advantage of changing? to the filter and frequencies from the SR150?
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73/Rick
W4XA
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