Request for a 32 (and if possible a 30) line standards converter. - Page 3 - UK Vintage Radio Repair and Restoration Discussion Forum

ppppenguin · 15th May 2007, 10:08 pm

I wonder if the Aurora works better because the output is DC coupled. Unlike normal audio the 30/32 line video signal has a substantial DC component which will be lost on the average AC coupled output.

DoctorWho · 15th May 2007, 10:11 pm

I have no idea, but the picture obtained from it far exceeds my expectations, it really is amazing. I just wish I could get a successful off-screen photograph which, so far, I have been unable to do.

tubesrule · 16th May 2007, 3:12 am

Hi Peter,
Glad it's working out well for you. Of course this is only representative of what would have been possible in the early days. With the converter we are feeding a digitally generated signal directly to the Televisor. Originally we would have had to contend with such things as signal fade, bandwidth limitations, and so on.
I agree with Jeff that the DC coupled output from the converter is most likely what's making the output more stable than that from an audio source. Most audio sources are AC coupled, so the black level, and even the sync pulses will change depending on the scene. This is why you may have lost sync on scene changes before.
All this means the image with the converter is as good as you could have obtained under ideal conditions back in the 20's and 30's, and it certainly makes for an enjoyable watching experience today!

Darryl

DoctorWho · 16th May 2007, 9:52 pm

It certainly does make for a very enjoyable watching experience Darryl, the Televisor has exceeded all my expectations, I'm just amazed at how much information is present using 32 lines!

Patchy1986 · 31st Aug 2007, 1:41 am

I don't think I could justify that kind of amount plus import duty for 40 quid MUTR kit but could someone provide me a photo of live tv from this converter on whatever NBTV set they have, just for fun?

Cheers

15th May 2007, 10:08 pm	#41
ppppenguin Retired Dormant Member Join Date: Dec 2003 Location: North London, UK. Posts: 6,168	Re: Request for a 32 (and if possible a 30) line standards converter. I wonder if the Aurora works better because the output is DC coupled. Unlike normal audio the 30/32 line video signal has a substantial DC component which will be lost on the average AC coupled output.

15th May 2007, 10:11 pm	#42
DoctorWho Rest in Peace Join Date: Apr 2005 Location: Devon Posts: 850	Re: Request for a 32 (and if possible a 30) line standards converter. I have no idea, but the picture obtained from it far exceeds my expectations, it really is amazing. I just wish I could get a successful off-screen photograph which, so far, I have been unable to do.

16th May 2007, 3:12 am	#43
tubesrule Hexode Join Date: Jul 2004 Location: Michigan USA Posts: 325	Re: Request for a 32 (and if possible a 30) line standards converter. Hi Peter, Glad it's working out well for you. Of course this is only representative of what would have been possible in the early days. With the converter we are feeding a digitally generated signal directly to the Televisor. Originally we would have had to contend with such things as signal fade, bandwidth limitations, and so on. I agree with Jeff that the DC coupled output from the converter is most likely what's making the output more stable than that from an audio source. Most audio sources are AC coupled, so the black level, and even the sync pulses will change depending on the scene. This is why you may have lost sync on scene changes before. All this means the image with the converter is as good as you could have obtained under ideal conditions back in the 20's and 30's, and it certainly makes for an enjoyable watching experience today! Darryl

16th May 2007, 9:52 pm	#44
DoctorWho Rest in Peace Join Date: Apr 2005 Location: Devon Posts: 850	Re: Request for a 32 (and if possible a 30) line standards converter. It certainly does make for a very enjoyable watching experience Darryl, the Televisor has exceeded all my expectations, I'm just amazed at how much information is present using 32 lines!

31st Aug 2007, 1:41 am	#45
Patchy1986 Triode Join Date: Apr 2007 Location: Wales Posts: 10	Re: Request for a 32 (and if possible a 30) line standards converter. I don't think I could justify that kind of amount plus import duty for 40 quid MUTR kit but could someone provide me a photo of live tv from this converter on whatever NBTV set they have, just for fun? Cheers