[Elecraft] [SPAM] Re: K3 Audio Low Pass Filter

Geoffrey Mackenzie-Kennedy gm4esd at btinternet.com
Sun Jul 5 11:53:08 EDT 2009


On Sunday, July 05, 2009 at 3:54 PM, Wes Stewart<n7ws at yahoo.com>   wrote:

> It seems to me that since audio is the desired output, the design process 
> should be to design an excellent audio system first and then work back 
> toward the antenna. Regrettably, it seems this is the            > 
> converse of how it works and the audio system becomes an afterthought, 
> with some designers believing that <10% THD is "good enough" for 
> "communications" audio.

Another good reason for running odd order dynamic range tests with both 
applied signals inside the overall passband when reviewing a receiver, may I 
suggest.

73,
Geoff
GM4ESD 



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