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Playing DVDs with copy protection on old TVs without lines or buzz
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Return to top of page · Post #: 31 · Written at 11:07:04 AM on 21 January 2018.
	Ian Robertson Location: Belrose, NSW Member since 31 December 2015 Member #: 1844 Postcount: 2371
Yes Stroppy I don't pretend to have invented such devices, a US vintage TV forum has shown up something similar. Mine's probably the only one with a built-in modulator optimised for vintage TVs.... I'm glad they nabbed your miscreants!

Return to top of page · Post #: 32 · Written at 1:07:02 PM on 28 January 2018.
	MonochromeTV Location: Melbourne, VIC Member since 20 September 2011 Member #: 1009 Postcount: 1182
I received my RF modulator yesterday. Thanks Ian!! It is hooked up to a 1980's B/W 10" Sharp 3-in-1 TV/radio/cassette, model 10P-35. I had to turn the gain right up to get rid of the caption noise. Can't wait to hook it up to my 1956 AWA 202C! Presently watching a old Homicide episode on DVD. The closing scene is the police Studebaker driving down Twickenham Cres, Burnley, curving into Barkly Ave & then turning on to the then newly built South Eastern Freeway.

Return to top of page · Post #: 33 · Written at 1:20:21 PM on 28 January 2018.
	Vintage Pete Location: Albury, NSW Member since 1 May 2016 Member #: 1919 Postcount: 2048
Mono, Ran mine on the pye w201 I have as it has always had white line problems that drive me nuts! All gone now nice clear image Pete

Return to top of page · Post #: 34 · Written at 3:09:31 PM on 28 January 2018.
	Ian Robertson Location: Belrose, NSW Member since 31 December 2015 Member #: 1844 Postcount: 2371
I've found with the DVD player I'm using I'll run at max audio gain. Just back it off a little if the audio clips when playing from your content/source. Your Sharp might need a tweak of the ratio detector balance (or quadrature coil if it's a later model) to get rid of the caption buzz entirely. Check it on a few other sets, if it's the same, you should tweak the subcarrier coil (L2) in the modulator instead. Let me know if that happens, my reference TV might be out..... I've assembled another 6 but I'm short a couple of parts. BTW, Silicon Chip magazine will be running it as a project, probably in the April issue.

Return to top of page · Post #: 35 · Written at 7:17:36 PM on 16 February 2018.
	GTC Location: Sydney, NSW Member since 28 January 2011 Member #: 823 Postcount: 6687
BTW, Silicon Chip magazine will be running it as a project, probably in the April issue. It's in the March issue, out now.

Return to top of page · Post #: 36 · Written at 8:59:56 PM on 16 February 2018.
	Ian Robertson Location: Belrose, NSW Member since 31 December 2015 Member #: 1844 Postcount: 2371
That's funny, they were supposed to send me a proof before publishing! Maybe I should look in the letterbox..... There's a copy of March SC! They've done a good job on the article. I needn't have worried!

Return to top of page · Post #: 37 · Written at 10:30:24 PM on 16 February 2018.
	GTC Location: Sydney, NSW Member since 28 January 2011 Member #: 823 Postcount: 6687
they were supposed to send me a proof before publishing! Given some of the clangers that end up on the errata page, they really should pay more attention to that aspect.

Return to top of page · Post #: 38 · Written at 3:31:25 PM on 17 February 2018.
	Ian Robertson Location: Belrose, NSW Member since 31 December 2015 Member #: 1844 Postcount: 2371
Yes I picked up a couple of minor issues, nothing serious though. What they are calling a moire pattern on the screen shot of the PM5544 test card is the actual chroma signal being reproduced by the TV, not a camera artifact!

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