[Elecraft] The Mysterious K3 Roofing Filter Scheme

Bill W4ZV btippett at alum.mit.edu
Fri Aug 14 22:17:52 EDT 2009




Al Lorona wrote:
> 
> Here's something else that I haven't determined: why do I keep seeing
> references to 'variable-bandwidth' filters, but absolutely no information
> about what they are or where they come from?
> 

The variable BW roofing filters were a *future* described at the original K3
introduction.  They have not yet been introduced.  Read about them and more
below:

http://www.zerobeat.net/mediawiki/index.php/K3_Roofing_Filters

Your assumptions on the other issues are all correct.

73,  Bill
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