UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Origin of terms "Roofing filter" and "Reciprocal mixing"

Radio Wrangler · 21st Mar 2017, 2:47 pm

I used a GK203 with an RA117 as my HF station for about 10 years. I never noticed any issues with TX phase noise, but then you don't - it's a problem for other people. But it looked quite decent on the spectrum analyser.

This thread is stirring memories. George, G3RJV used to have the later model Redifon SD1 sitting in the vicarage study

David

21st Mar 2017, 2:47 pm	#7
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,876	Re: Origin of terms "Roofing filter" and "Reciprocal mixing" I used a GK203 with an RA117 as my HF station for about 10 years. I never noticed any issues with TX phase noise, but then you don't - it's a problem for other people. But it looked quite decent on the spectrum analyser. This thread is stirring memories. George, G3RJV used to have the later model Redifon SD1 sitting in the vicarage study David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done