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post #1 of 7 Old 05-23-2012, 01:37 AM - Thread Starter
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this is anachronistic i know, but i'm functioning on nostalgia here. i want to watch older tv shows or play emulators on an old tv i have. the only input this tv has is coaxial. i have my super nintendo run in through the rf out to the original nes splitter where you can run the regular cable in, and i want to run tv shows from my computer into the same tv. i just want something to run video and audio from my computer to this old tv. i know vga doesn't carry audio, but my laptop has hdmi, which does carry audio. is there any sort of converter that exists to bind them together to the coax format or is there any diy way to strip and bind an hdmi cable to a coax cable or anything? or perhaps usb? is there any way to take a usb cable and bind certain pins to the inside and other pins to the outside of a coax and have it carry audio and video? i'm willing to write up a driver or and arduino protocol or whatever is necessary for it, but i'd really like to watch twin peaks on the tv i would have watched it on when it was airing on local tv.

thank any of you who have anything to offer, but no, i'm not willing to upgrade the tv.
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post #2 of 7 Old 05-23-2012, 08:16 AM
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You just need a "Channel 3/4 Modulator" to take composite video and analog audio to get it onto the coax in a form the TV will be able to consume. Forget VGA/USB/HDMI. Get your source device to either composite or S-Video, and the modulator will be the answer...

http://www.radioshack.com/product/in...95#tabsetBasic

Connect it up and turn to channel 3!

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post #3 of 7 Old 05-23-2012, 10:15 AM
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Quote:
Originally Posted by jautor View Post

Get your source device to either composite or S-Video, and the modulator will be the answer...

Jeff

I think what he's asking is exactly how to do this. Assuming his source device (computer with HDMI output) doesn't have a composite/S-Video or analog audio output to feed to the RF modulator he'll need to convert the VGA video signal and stereo (headphone) audio output first.....this all in one converter http://www.amazon.com/Sewell-Direct-...7791787&sr=1-1 should get the job done.

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post #4 of 7 Old 05-23-2012, 11:21 AM
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Yep, that looks like a good answer for the other half of the equation!

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post #5 of 7 Old 05-28-2012, 08:33 AM
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Quote:
Originally Posted by depersonalised View Post

this is anachronistic i know, but i'm functioning on nostalgia here. i want to watch older tv shows or play emulators on an old tv i have. the only input this tv has is coaxial. i have my super nintendo run in through the rf out to the original nes splitter where you can run the regular cable in, and i want to run tv shows from my computer into the same tv. i just want something to run video and audio from my computer to this old tv. i know vga doesn't carry audio, but my laptop has hdmi, which does carry audio. is there any sort of converter that exists to bind them together to the coax format or is there any diy way to strip and bind an hdmi cable to a coax cable or anything? or perhaps usb? is there any way to take a usb cable and bind certain pins to the inside and other pins to the outside of a coax and have it carry audio and video? i'm willing to write up a driver or and arduino protocol or whatever is necessary for it, but i'd really like to watch twin peaks on the tv i would have watched it on when it was airing on local tv.

thank any of you who have anything to offer, but no, i'm not willing to upgrade the tv.

It's not about the wires themselves, it's about what's carried on them; specifically the formats involved. And they're radically different between USB, VGA, HDMI and the like. You can't just strip and splice wires.

You have to get devices that either output the right format to start with, or involve adapters and/or converters to do it.

When you use converters you're looking at signal loss at each point. So you're better served getting the source out of your computer in as close to the right form as possible. There are USB display devices, widgets that plug into USB and put out a video signal. The question is whether anyone makes one that outputs composite (NOT component) video. If you could find one of those you'd then only have to use an RF modulator. Otherwise you'd have to start daisy-chaining multiple adapters/converters together to downgrade the signals.

Another option would be to find a network streaming device that has composite output. Then you'd use that to stream the video over the network from your computer via file sharing. This would probably be a lot easier that trying to maintain a bunch of converters/adapters connected to your laptop. Don't forget, those connectors on your laptop aren't designed to be terribly durable. Especially not the HDMI socket.

All this just so you can wax nostalgic looking at programs at a crappy resolution? I wouldn't bother.
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post #6 of 7 Old 05-29-2012, 08:15 AM
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VGA is simple RGBHV (what was commonly called component before someone decided to also call YPbPr component). RGBHV modulators use to be extremely common. I'd think you could find a used one somewhere pretty cheap, then just make or buy a VGA > RGBHV breakout cable and a Mini > RCA cable for audio and you're in business.
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post #7 of 7 Old 05-29-2012, 09:38 AM
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Might I suggest a totally different way of attacking this problem?

Retro TV mod...
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