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A Latvian and english Linux tiny operating system. used by golf & dvd lovers

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#1 2012-02-20 17:37:19

atang1
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Registered: 2006-03-30
Posts: 2705

Buying old TV vcr and Radio shack DTV with passthru ? save on DVD ?

We all know how to hookup analog TV with only RF input and vcr. Expecially for 2 vcr to copy VHS tapes.

But now the TV is digital and you have to have passthru of analog signals from vcr to DTV converter. to your TV.

So, the antenna has to be hook to the first vcr, then run to the second vcr to be able to do copies. then run antenna wires to DTV converter then to TV. VCRs can only be used with power on; DTV use passthru and analog signals only.. DTV when used, have to turn off power on the vcrs.

Each vcr if using remote, has to be manually turn on to work with remote(to set the clock or play, stop etc.).

Footnote:
Sharp vcr RF antenna input has passthru if power is off. Can not even insert tape into vcr if power is off.  Other vcr may have RF amplifier to boost antenna input voltage if power is on. Then if you use tape for viewing movie; the antenna and tuner is switched off to the output.

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2012-02-20 17:37:19

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#2 2012-02-20 17:52:54

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Buying old TV vcr and Radio shack DTV with passthru ? save on DVD ?

DTV without passthru, if connected to vcr, needs to switch off power totally. Vcrs used by themselves to TV or record DTV on vcr; and view it at the same time as recording.

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#3 2012-02-20 18:11:23

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Buying old TV vcr and Radio shack DTV with passthru ? save on DVD ?

Some vcr has very good analog quality of recording, and can be saved on DVD is you own a combo, dub from VHS to DVD, or DVD to VHS? Sometimes, the tape maybe too short for DVD and dubbibg can not even start.

So you have to do it manually on analog system and feed the AV signals to computer DVD/RW for recording.

But consumer electronics DVD recorder also can do DVD recording($100)?

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#4 2012-02-21 10:42:59

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Buying old TV vcr and Radio shack DTV with passthru ? save on DVD ?

The built in RF amplifier in VHS vcr is very gentle, gains are about 1.5-2 db. If your signals are less than 10 microvolts, it may help you to get some far away stations with multi elements antenna coupled with RF splitter in reverse. TV RF tuners are generally sensitive to 10-30 microvolts. So, 3 microvolt signal may need three vcr RF amplifiers in series to get the far away station with usable signal level.

Have fun design you super signal gain TV system? Antenna RF amplifiers tend to blow out your TV tuner when there is a storm or thunder on your power line.

VHS VCR(s) hooked up in RF cables in series also can do multi copies at the same time.

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#5 2012-02-21 11:56:08

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Buying old TV vcr and Radio shack DTV with passthru ? save on DVD ?

Using VHS vcr RF output on channel 3 or 4 as wireless transmitter?

If you use a piece of wire 4-5 feet long, you have a range of 1 meter or about 3 feet in distance. You can send media of digital TV using a converter, or Movies from tape output, or DVD connected to AV input of vcr.

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#6 2012-02-22 08:58:35

atang1
Administrator
Registered: 2006-03-30
Posts: 2705

Re: Buying old TV vcr and Radio shack DTV with passthru ? save on DVD ?

TV adjustment for best picture of contrast and brightness, hue and sharpness?

Nikon had always recommend brightness be half a stop less. this means you adjust brightness slightly lower to make contrast ratio slightly higher. Leave tint and sharpness at the factory settings.

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