[1000mp] cw fiters

[Earl W Cunningham]

John, N3DRK wrote:

"I dont understand something. Why do you have the 500hz filters back to
back. Is it not sufficient to just have one 500 in the 2nd if? What
effect does having another 500 in the 3rd if have?"
==========
1) The 455kHz filter has better skirt selectivity than the 8.215MHz
filter.

2) Perhaps more importantly, having both filters with equal bandwidths
make your WIDTH control much more effective.

73, de Earl, K6SE