In theory yes. But there can be a lot of signals in the IF and if you
struggling to get a weak one out then the RX is better with a narrow filter.
I don’t know the math behind this or the electronic design details but I can
tell its better by my decodes after I added the filter.
It is the same reason that last year at Dayton after a discussion with Wayne
I also purchased a 200hz filter.
~73
Don
KD8NNU
-.- -.. ---.. -. -. ..-
-----Original Message-----
From: Brian Alsop
Sent: Sunday, January 27, 2013 9:30 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] RE: Custom 700 Hz 8-Pole K3 Filters (by INRAD)
Hmm, wouldn't the DSP filter be good enough for this purpose?
Except for obnoxious PACTOR, there are generally not the 40db over S9
signals to reject.
73 de Brian/K3KO
On 1/27/2013 14:17, KD8NNU wrote:
I use mine for digital modes. There are times where a 500 hz could be
too narrow. That is the reason I purchased mine.
~73
Don
KD8NNU
-.- -.. ---.. -. -. ..-
-----Original Message----- From: John_N1JM
Sent: Sunday, January 27, 2013 9:08 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] RE: Custom 700 Hz 8-Pole K3 Filters (by
INRAD)
Out of curiosity, what would one use or need a 700hz filter for?
73, John N1JM
Gary W. Hvizdak wrote
P.S. The filters retail for $145 each + S&H, with S&H being as follows
...
o Domestic = $6
o Canada & Mexico = $14
o All other international destinations (one or two filters) = $18
o All other international destinations (more than two filters) = $34
73,
Gary KI4GGX
(webmaster)
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