Hi Everyone,
I recently purchased and installed the 700 Hz
Custom INRAD filter from Gary-KI4GGX of
www.unpcbs.com. In the nearly two weeks that I
have had this filter installed in my K3, it has
become my primary CW filter for this rig.
I am not a contester but rather a search and
pounce DXer for many years now (35+). My first
rig as a novice was a Heath HW-8 in 1977. It was a
QRP CW rig running 2-3w CW with an audio filter at
750Kz. I worked 38 countries with a dipole with
that rig. It taught me to learn to listen for CW
DX using a broad filter bandwidth compared to most
of the standard bandwidths used these days.
I have been using an INRAD 8 pole 500 Hz CW filter
in my K3 since I got it in 2008. But I had been
thinking about Gary's 700 Hz filter for a while
now and I finally decided to take the plunge two
weeks ago.
For me this had turned out to be the perfect CW
filter. I find myself using it exclusively now in
all but the very most difficult situations.
(Remember I do not contest.) It allows me to
cruise the CW bands from a wider perspective
helping me to gain a more macro-orientation to
what's on the CW bands and making me use my brain
more to differentiate between the CW signals I
hear. It's a very comfortable filter to listen to.
For me this filter is a keeper here for sure.
As for Gary and unpcbs, both remind me of an
extension of Elecraft. Excellent quality product
with superior service on top of that.
If you are thinking of pre-ordering with Gary for
an upcoming INRAD Customer 700 Hz filter batch, I
can highly recommend that you do so.
I really like this filter.
My $.02
73 de N1LQ-Dave
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