[Elecraft] Elecraft receiver experience

N2EY at aol.com N2EY at aol.com
Mon Sep 3 22:23:15 EDT 2007


In a message dated 9/3/07 9:34:19 PM Eastern Daylight Time, 
brett.gazdzinski at verizonbusiness.com writes:


> Would I be right in assuming the more conversions, the
> higher the phase noise, even if crystal oscillators are used?

It's not that simple.

A multiconversion rx with quiet oscillators can have less phase noise than a 
single-conversion rx with a noisy oscillator.

> 
> In the homebrew receivers, I used B+W coil stock, which
> I think has very high Q...
> 

That's only one component. Good but not perfect. The key is for the entire 
oscillator *circuit* to be high Q, not just one or two components.

73 de Jim, N2EY


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