[Boatanchors] oscillator waveform

[Richard Knoppow]

----- Original Message ----- 
From: "Paul Kraemer" <elespe at lisco.com>
To: <boatanchors at qth.net>
Sent: Sunday, December 12, 2010 2:05 PM
Subject: [Boatanchors] oscillator waveform


>A tecnical question for the group:
> Should the waveform from a hetrodyne oscillator in a 
> receiver front-end be a
> clean sine wave? Does it matter if it is a skewed or not 
> symmetrical
> waveform?
> I'm working on a receiver which seems (to me) to have a 
> lot of birdies or
> tweets and I'm wondering if that waveform could be 
> significant contributing
> factor.
> Alignment of the xtal oscillator "by the book" looking for 
> maximum voltage
> produces somewhat distorted waveform.
> A slight mis-tuning while observing the scope to make the 
> waveform more pure
> is possible on some bands but not all.
> Paul K0UYA
>
    What model of receiver? Most LO's are designed to put 
out a reasonably clean waveform.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com