On Sep 13, 2007, at 10:04 AM, David Woolley wrote:
Charles Harpole wrote:
So, the exact measurements of anything in the radio are beside the
point... I know I want the radio and I want filters for narrow SSB
and general CW, so I add extra 1.8 and 500.
In that case you may have wasted your money as you haven't given one
of the valid reasons for buying the optional filters. They are
roofing filters, not primary selectivity filters.
They are both.
You can make the DSP bandwidth narrower the selected crystal filter,
but the crystal filter establishes the 1st IF bandwidth, which is
critical to achieving high close-in dynamic range.
We're working on the final numbers (which involves testing several
radios with each filter to make sure they're consistent). Preview: they
will be outstanding :)
73,
Wayne
N6KR
---
http://www.elecraft.com
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
