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List:       elecraft
Subject:    [Elecraft] Roofing filters
From:       William Levy <wglevy () gmail ! com>
Date:       2015-09-29 1:55:50
Message-ID: CAGAru0_Zr5O9ufzTffxMepvqkFWkmH7KqHMLqqcmJsjFuZ-eVg () mail ! gmail ! com
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As mentioned here a few days/weeks ago Collins is no longer making their
crystal filters.

So it seems to me there will be a time that the roofing filter idea will be
another digital filter on top of the lower digital filter.

I have played with a K3 with no roofing filters, I live in a bullet proof
area with few hams, so my preferernce on CW is to go as narrow as I can if
the other guy is stable, and SSB as narrow as need be but the K3 is so
bullet proof that unless a station is on top of the other I can certainly
remove the interference by bandwidth adjustments or passband adjustments.
If the guy is on the same frequency and lower in power then the RF gain
does away with him. If he is more powerful then I simply tell him he is
interfering and he goes away or I have to go away.

I must say that the K3 is an exceptional receiver and transmit exceptional
audio that other people report to me so I can say after 54 years a ham that
I have NEVER
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