Unfortunately, the APF is too narrow for 160m with all the lightning noise.
As I recall, we've been promised wider selectivity choice(s) but nothing ever
happened.
73, Roger
On 6/22/2020 12:27 PM, John Gibson wrote:
Each Sunday evening, I use my K3 #820 to try to check into Kevin’s 20m Elecraft
CW net. Kevin in Oregon is almost 1900 miles from me in Michigan, and I succeed
only because I have a modest tri-band beam antenna at 60 ft.
Current propagation conditions make this especially challenging. Sometimes
Kevin is so buried in noise that I find him only because I can recognize the
rhythm of his sending.
Last evening, conditions were poor. I tuned all around the net frequency and
could hear nothing of Kevin. Then I turned on my K3's Audio Peaking Filter
(APF), searched again, and found him, and he was loud! When I turned off the
APF, he vanished. I did check into the net.
My K3's APF made all the difference between hearing Kevin and not finding him.
I am impressed that it worked so well. I thank Wayne N6KR for creating this
feature for the K3.
73,
John, no8v
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