[Premium-Rx] *** SPAM *** Re: Wellbrook excellence !

[GandalfG8 at aol.com]

In a message dated 22/11/2006 20:10:41 GMT Standard Time,  
peter at rovardi.wanadoo.co.uk writes:

.(Currently playing with a Krohn -Hite Variable Dual Filter  LP  
/HP.150Hz - 1.5MHz . Model 3200R )
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Hi Peter
 
I'm also a Wellbrook enthusiast, although have only used the smaller loops  
so far, but would suggest some caution when it comes to the Krohn-Hite  filters.
 
I first came across these a few years ago and thought they were worth a try  
at LF but forgot that what passes for "low" noise in a reasonably high  level 
audio filter might not be quite the same at low level RF.
 
My practical results were not encouraging and, as I understand it, the spec  
allows up to 100uV of internally generated noise which is quite a lot  to push 
into a receiver.
 
regards
 
Nigel
GM8PZR
 
 
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