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Old 11th September 2005, 08:42 PM   (permalink)
Default “AV to RF” converter Circuit?

I have old old colour television without AV (Audio/video) connection facility
and I want to see VCD on that but the problem is that VCD have only AV out
so any one can help me to find or construct “AV to RF” converter Circuit
TPS
http://geocities.com/tpsbpl/download.htm
:?:
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Old 11th September 2005, 09:06 PM   (permalink)
Default Re: “AV to RF” converter Circuit?

Quote:
Originally Posted by TPS
I have old old colour television without AV (Audio/video) connection facility
and I want to see VCD on that but the problem is that VCD have only AV out
so any one can help me to find or construct “AV to RF” converter Circuit
TPS
http://geocities.com/tpsbpl/download.htm
:?:
Just use an old VCR, or at least the RF modulator section out of an old VCR.
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Old 11th September 2005, 11:31 PM   (permalink)
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If your AV source is half-decent quality like a DVD player, then a direct S-video connection is much, much clearer than RF. :lol:
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Old 11th September 2005, 11:52 PM   (permalink)
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Quote:
Originally Posted by audioguru
If your AV source is half-decent quality like a DVD player, then a direct S-video connection is much, much clearer than RF. :lol:
How do you use an S-video connection on an old TV? Like Nigel said?, using a VCR?
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Old 12th September 2005, 02:11 AM   (permalink)
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Hi Joel,
A few years ago I compared the clarity of my VCR using RF, RCA video and S-video connections to my fairly new pretty good Sony TV. S-video was a little clearer than the others.
Then I got a digital video recorder from my cable TV company and it came with all-digital stations. Connected to my TV with an S-video cord it looks like all channels are high resolution. Very crisp and clear.

I know what it is like to have an old TV. I had my last one for 40 years. I fixed it, tweaked it and souped it up. And watched video tapes with a fuzzy RF connection. If it didn't have its chassis connected directly to the mains, I would have added an AV input. :lol:
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Old 12th September 2005, 06:01 AM   (permalink)
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For the audio, add an input to the TV's audio preamp, for the video you shouldn't have much problem finding an RF converter with a web search, I seen one at www.web-ee.com
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Old 13th September 2008, 10:31 PM   (permalink)
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hi guyz
i am at same problem. connecting audio to the amps is a good idea but just i cant find any schema for rf video modulator. all devices are for sale and boxed. i wanna make one for my own. seems like i need a schema for that. anyone has one?

lol that is a very old post:S anyway maybe someone can help me.

Last edited by cmeliheag; 13th September 2008 at 10:32 PM.
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Old 14th September 2008, 03:54 AM   (permalink)
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Yes it is an old thread. You would be wasting a lot of time and money, and most likely disappointed in the results. RF modulators are cheap and easy to find. Have seen them surplus for $2.00. Walmart had some under $10. And usually not to difficult to rip out of an old cable box, VCR, or video game...

Unless you have good parts, decent skills, and the right tools, you will likely pick up a lot of noise, and get a crappy picture. I haven't built a modulator, but did a video transmitter years ago, which after a lot of troubleshooting and tweaking, turned out to be barely functional, not really useful.
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Old 14th September 2008, 04:58 AM   (permalink)
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RF modulators today are for blind people who don't care about picture clarity.
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Old 16th September 2008, 10:17 AM   (permalink)
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i am looking for a modulator for days but its hard to find in my little city. btw only a trick or something else to make my own modulator will come in handy here.
and "audioguru" you dont have to be blind if u have an old *** television and dont have money to spare for a new one.
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Old 16th September 2008, 11:11 AM   (permalink)
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Quote:
Originally Posted by cmeliheag View Post
i am looking for a modulator for days but its hard to find in my little city. btw only a trick or something else to make my own modulator will come in handy here.
and "audioguru" you dont have to be blind if u have an old *** television and dont have money to spare for a new one.
hi,
I just Googled TV modulator circuit.

Look at these

http://www.zen22142.zen.co.uk/Circuits/rf/tv_tx.htm

http://members.tripod.com/petlibrary/rfmod.htm

http://www.technotoad.com/how-to-bui...or-your-tv.php
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Old 16th September 2008, 11:32 AM   (permalink)
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Find an RF modulator.
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Old 16th September 2008, 05:24 PM   (permalink)
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Quote:
Originally Posted by cmeliheag View Post
and "audioguru" you dont have to be blind if u have an old *** television and dont have money to spare for a new one.
You don't need a new TV unless you want a high definition, widescreen huge one with a flat thin LCD display.

Some people buy a replacement TV every 2 years. They throw away the "old" one.
I am using my daughter's "old" TV.

My son found a perfect 27" CRT colour TV on the curb on garbage day. He took it home and uses it as a second TV. It has modern inputs and outputs.
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Old 17th September 2008, 08:42 AM   (permalink)
Default

Quote:
Originally Posted by audioguru View Post
You don't need a new TV unless you want a high definition, widescreen huge one with a flat thin LCD display.

Some people buy a replacement TV every 2 years. They throw away the "old" one.
I am using my daughter's "old" TV.

My son found a perfect 27" CRT colour TV on the curb on garbage day. He took it home and uses it as a second TV. It has modern inputs and outputs.
Things here dont work as there. if i say i cant find a tv, then i cant find a tv.
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Old 17th September 2008, 08:43 AM   (permalink)
Wink

exactly these are what i was looking for ty mate
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