UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Sony KV-A2942U very soft focus in middle of screen

simpsons · 6th Oct 2022, 1:03 pm

Hi Marcel

You make a good point.

I can't remember if CTI was switchable in UK sets. I believe it was introduced to compensate for the characteristics of the 5.5Mhz video bandwidth found in Europe whilst the BBC used 6 Mhz to improve the chrominance slope.

VM was switchable and I did switch it off, or maybe unplugged the lead. Apart from watching cartoons it wasn't really my cup of tea.

I know that my Sony KV2000 gives an outstanding picture with colour bar edge definition as sharp as my monitor and a video frequency response as equal to a Philips G11 but whose luminance edge definition is nowhere near as good.

My KV2204 however, with ceramic filters to shape it all, is not in the same league.

Chris

6th Oct 2022, 1:03 pm	#39
simpsons Octode Join Date: Feb 2007 Location: Harrow, London, UK. Posts: 1,493	Re: Sony KV-A2942U very soft focus in middle of screen Hi Marcel You make a good point. I can't remember if CTI was switchable in UK sets. I believe it was introduced to compensate for the characteristics of the 5.5Mhz video bandwidth found in Europe whilst the BBC used 6 Mhz to improve the chrominance slope. VM was switchable and I did switch it off, or maybe unplugged the lead. Apart from watching cartoons it wasn't really my cup of tea. I know that my Sony KV2000 gives an outstanding picture with colour bar edge definition as sharp as my monitor and a video frequency response as equal to a Philips G11 but whose luminance edge definition is nowhere near as good. My KV2204 however, with ceramic filters to shape it all, is not in the same league. Chris