[Elecraft] k3 - dual receiver & filters

[Wayne Burdick]

Ralph,

You're right: even if the filters don't have matched offsets, you can use diversity mode. 

But the main and sub synthesizer frequencies will usually be separated by a fraction of a Hz if the offsets are different, leading to a rolling sound in the receivers (phase precessing, a type of beat note). It can be distracting. 

This is why most users prefer to use matched filters. 

73,
Wayne
N6KR 

----
http://www.elecraft.com

On Feb 8, 2011, at 10:14 PM, Ralph Parker <ve7xf at dccnet.com> wrote:

>> If you plan to use diversity reception, then the matched filters are 
> necessary...
> 
> C'mon, guys, this is not true!
> I use diversity reception with one .400 8 pole and one .500 5 pole,
> sometimes with one .250 8 pole and one .500 5 pole. 
> Better performance with matched filters = quite likely.
> Necessary = not.
> 
> Ralph, VE7XF
> 
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