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The awful CCT811 modulator.

Pre War 240/405, Post War 405 Line, B&W Dual Standard, Colour Dual Standard, B&W S/S 625, Colour S/S 625 line, Hybrids. Standards converters & modulators, video recorders.
 
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The awful CCT811 modulator.

Post by Doz » Fri Jul 29, 2016 6:50 pm

These things have been written about in these hallowed pages before. Well, the inevitable happened, and mine went bang.

Mine now sports a new, and safe power supply.

http://andydoz.blogspot.co.uk/2016/07/c ... ilure.html

How many of these are lurking in unsuspecting members of the public's houses waiting to burn them down?

 
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Re: The awful CCT811 modulator.

Post by Terrykc » Fri Jul 29, 2016 7:09 pm

Doz, these modulators are still available on fleabay but the model quoted on two that I've looked at is RF9000.

I would suggest that you post some pictures of your's so that everybody can recognise it.

Unless a product has the manufacturer's name clearly visible it is not unusual to find the same object on sale from several sellers in different guises. The only clues are the picture and, where there is one, the specification, which will be identical, word for word.

 
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Re: The awful CCT811 modulator.

Post by Doz » Fri Jul 29, 2016 7:19 pm

Will do. There's a link on the page to the original article which does have pictures.

 
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Re: The awful CCT811 modulator.

Post by Doz » Fri Jul 29, 2016 7:24 pm

Duly updated with pictures.

Please feel free to share by whatever means you have...

 
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Re: The awful CCT811 modulator.

Post by Terrykc » Fri Jul 29, 2016 8:39 pm

Here's the one currently available.

I can't see any difference, can you?

Image

 
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Re: The awful CCT811 modulator.

Post by Doz » Fri Jul 29, 2016 9:29 pm

None whatsoever, at least cosmetically.

 
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Re: The awful CCT811 modulator.

Post by sideband » Fri Jul 29, 2016 9:47 pm

Hi Andy. Putting on my Safety Test Engineer cap prompted by the pictures in your blog, I can say with all certainty that it definitely DOESN'T deserve the CE mark (which is probably fake anyway) for at least three reasons (four if you count the unfused plug you cut off). First is the fact that there was no internal fuse, second is that fact there is no mains filtering, third (and I'll use engineering judgement here based on that fact that I haven't checked it personally), that minuscule transformer cannot possibly be triple insulated or meet creepage and clearance measurements. The fact that it lasted at all is quite amazing.

When these things are manufactured in China, the less-than-scrupulous suppliers will simply ask what safety approvals are required and just stamp it accordingly.

As you say, a great pity as an otherwise useful piece of kit is spoilt by a poor power supply.

Good job resurrecting it though :aad

 
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Re: The awful CCT811 modulator.

Post by Doz » Sat Jul 30, 2016 10:04 am

sideband wrote:Hi Andy. Putting on my Safety Test Engineer cap prompted by the pictures in your blog, I can say with all certainty that it definitely DOESN'T deserve the CE mark (which is probably fake anyway) for at least three reasons (four if you count the unfused plug you cut off). First is the fact that there was no internal fuse, second is that fact there is no mains filtering, third (and I'll use engineering judgement here based on that fact that I haven't checked it personally), that minuscule transformer cannot possibly be triple insulated or meet creepage and clearance measurements. The fact that it lasted at all is quite amazing.

When these things are manufactured in China, the less-than-scrupulous suppliers will simply ask what safety approvals are required and just stamp it accordingly.

As you say, a great pity as an otherwise useful piece of kit is spoilt by a poor power supply.

Good job resurrecting it though :aad


I said similar in my first article...


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