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Radio Wrangler · 6th Mar 2021, 10:49 am

All radios
All signal generators
Everything with an oscillator inside it.

Why?

Well, the answer is text-book sized. Look up 'phase noise' and 'reciprocal mixing'

I put my short version take on it in the ARRL handbook. It's in the Oscillators and synthesisers chapter in any year after 1995. Much too painful to retype here.

David

6th Mar 2021, 10:49 am	#2
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,868	Re: Noise in receivers All radios All signal generators Everything with an oscillator inside it. Why? Well, the answer is text-book sized. Look up 'phase noise' and 'reciprocal mixing' I put my short version take on it in the ARRL handbook. It's in the Oscillators and synthesisers chapter in any year after 1995. Much too painful to retype here. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done