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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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20th Mar 2023, 11:23 am | #1 |
Octode
Join Date: Feb 2007
Location: Harrow, London, UK.
Posts: 1,493
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Sony PAL Comb filter
Having followed with interest 3CX15000A7 post, the topic of a PAL comb filter sprang to my attention.
Knowing that in the USA NTSC Sony Comb Filters were used in their top Video Recorders and could be successfully used in their KV2704 equivalent, having a KV2000 which beats the KV2204 hands down in its IF frequency response*, I wonder if a PAL comb filter could be used? If so where could I get one? Chris * The KV2000 using a LC IF reproduces Test Card D with ease whilst the KV2204 with a SW IF and notch filter struggles. From memory, Test Card D was withdrawn because so many TV sets struggled to reproduce it. Last edited by simpsons; 20th Mar 2023 at 11:30 am. |
20th Mar 2023, 6:40 pm | #2 |
Tetrode
Join Date: Dec 2019
Location: Bergen op Zoom, Netherlands
Posts: 65
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Re: Sony PAL Comb filter
I don't think a PAL comb filter will work in a NTSC system, as a comb filter works with a very precious relationship between linerate/collor subcarrier
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21st Mar 2023, 10:28 am | #3 |
Octode
Join Date: Feb 2007
Location: Harrow, London, UK.
Posts: 1,493
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Re: Sony PAL Comb filter
Hi 3CX15000A7
My request might require clarification. It is PAL comb filter I'm interested in for use in Europe. Most, if not all, modern LCD televisions, which can receive analogue transmissions, include a comb filter which is NTSC/PAL compatible. In the USA, High End Sony video recorders and televisions included a NTSC comb filter as a simple notch filter at 3.57 MHz degrades picture quality too much. I would like to know if European Sony video recorders or maybe their Profeel TV had a PAL one and if so, can I easily use it in a domestic Sony KV2000 Chris |
21st Mar 2023, 11:44 am | #4 | |
Pentode
Join Date: Apr 2021
Location: Paris, France.
Posts: 246
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Re: Sony PAL Comb filter
Quote:
This was far from being the case at the time of fully analog TV... |
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