I have a Dish 500 satellite hooked up to a generic Panasonic PV-8450 VCR.

If I connect audio/video cables from the Dish reciever to the VCR the
reception is picture perfect, once I switch to using coaxial cable from
the Dish Reciever to VCR there are moving Horizontal lines of
interferrence..Any explanation what would cause this?

Bad cable, poor connections at the ends of the cable, defective connections
at the RF modulator in the Dish Receiver or in the VCR. Any of which will
cause interference. Best quality is always realized using direct video and
direct audio, Super Video if avaible.
"Lehrbach" wrote in message
lkaboutelectronicequipment.com...
I have a Dish 500 satellite hooked up to a generic Panasonic PV-8450 VCR.

If I connect audio/video cables from the Dish reciever to the VCR the
reception is picture perfect, once I switch to using coaxial cable from
the Dish Reciever to VCR there are moving Horizontal lines of
interferrence..Any explanation what would cause this?

Well it's not the coaxial cable since I replaced it and the interference is
still there, I've had this VCR hooked up to a Cable box reciever with the
same coaxial cable and the picture was fine.

So either the Dish reciever has a cable connection problem, or the Dish is
sending a type of "protection" signal that the VCR picks up..can't tell
which.

Well it's not the coaxial cable since I replaced it and the interference is
still there, I've had this VCR hooked up to a Cable box reciever with the
same coaxial cable and the picture was fine.

So either the Dish reciever has a cable connection problem, or the Dish is
sending a type of "protection" signal that the VCR picks up..can't tell
which.

On Sat, 21 Aug 2004 14:12:39 -0400, "Lehrbach"
put finger to keyboard and composed:

I have a Dish 500 satellite hooked up to a generic Panasonic PV-8450 VCR.

If I connect audio/video cables from the Dish reciever to the VCR the
reception is picture perfect, once I switch to using coaxial cable from
the Dish Reciever to VCR there are moving Horizontal lines of
interferrence..Any explanation what would cause this?

Are the two devices using different RF channels? In my area many
people have interference problems due to the new local digital TV
stations broadcasting on UHF channels 36, 37, and 38. These same RF
channels are preprogrammed into many VCRs. The fix is to reprogram the
RF channel in either unit.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

"Lehrbach" wrote:

}I have a Dish 500 satellite hooked up to a generic Panasonic PV-8450 VCR.
}
}If I connect audio/video cables from the Dish reciever to the VCR the
}reception is picture perfect, once I switch to using coaxial cable from
}the Dish Reciever to VCR there are moving Horizontal lines of
}interferrence..Any explanation what would cause this?

Do the horizontal lines occur on every channel? Are they recorded?
(i.e record a tape & play back on another vcr/tv setup...what happens?)

Sometimes, the local oscillators in VCRs and other home equipment
generate a signal that radiates and causes a "beat" pattern.

Try physically moving the vcr several feet away using longer coax and
let us know what happens.

BTW, is this a new install? Or did this just start happening to an
existing setup?

Stan.

Yes the lines occur on every channel (multiple lighter colored horzontal
lines moving downward slowly at times then faster after a period of
time..eventually no lines, then the pattern repeats, the lines are also
recorded.

The interferrence has occured day one since it was connected to the
Satellite reciever, I do get subtle variations in strength when moving the
cable around, but still present..I don't have the convience of moving the
VCR feet away however since it's a componet in an entertainment center.

When you refer to different RF channels, are you meaning switching the VCR
Cable or Ant settings, I've tried switching those with no effect.

On Sun, 22 Aug 2004 02:59:48 -0400, "Lehrbach"
put finger to keyboard and composed:

When you refer to different RF channels, are you meaning switching the VCR
Cable or Ant settings, I've tried switching those with no effect.

The RF modulators in your VCR and satellite receiver should not be set
to the same RF channel, nor should either device be set to an RF
channel that is in use by a local TV station. In fact, choose channel
numbers which are as far apart as is convenient. Avoid adjacent
channels if at all possible. For example, UHF 36 and 40 would be a
better choice than UHF 36 and 37.

This easy-to-read document talks about interference problems (and
remedies) in my locale:
http://www.dba.org.au/uploads/docume...rochure_03.pdf

This page mentions Co-Channel, Adjacent Channel, and Ancillary Device
Interference:
http://www.dba.org.au/interference


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

In article
outelectronicequipment.c
om, says...
Yes the lines occur on every channel (multiple lighter colored horzontal
lines moving downward slowly at times then faster after a period of
time..eventually no lines, then the pattern repeats, the lines are also
recorded.

The interferrence has occured day one since it was connected to the
Satellite reciever, I do get subtle variations in strength when moving the
cable around, but still present..I don't have the convience of moving the
VCR feet away however since it's a componet in an entertainment center.

Moving the cable makes a difference? Then that is a big clue that it is
picking up interference. Are you using push-on F connectors, or screw-on.
Get rid of any push-on F connector cables. They often have very poor
ground connections.

By the RF input, do you mean the satellite box converting to channel 3
or 4, or is there some bypass for an antenna input? If it's the 3 or 4
output, try using the other channel, if the satellite box offers the
option to change it. For the VCR, the change is either a switch on back or
a menu setting.

--
If there is a no_junk in my address, please REMOVE it before replying!
All junk mail senders will be prosecuted to the fullest extent of the
law!!
http://home.att.net/~andyross

On Sat, 21 Aug 2004 13:46:15 -0700,
(Stan) wrote:

"Lehrbach" wrote:

}I have a Dish 500 satellite hooked up to a generic Panasonic PV-8450 VCR.
}
}If I connect audio/video cables from the Dish reciever to the VCR the
}reception is picture perfect, once I switch to using coaxial cable from
}the Dish Reciever to VCR there are moving Horizontal lines of
}interferrence..Any explanation what would cause this?

Do the horizontal lines occur on every channel? Are they recorded?
(i.e record a tape & play back on another vcr/tv setup...what happens?)

Sometimes, the local oscillators in VCRs and other home equipment
generate a signal that radiates and causes a "beat" pattern.

Try physically moving the vcr several feet away using longer coax and
let us know what happens.

BTW, is this a new install? Or did this just start happening to an
existing setup?

Stan.

We had the same problem when setting up our Dish system.
Our noise pattern was more of a herringbone sweep though.
We just switched to the rca and s-video outs and the problem
disappeared.
You get the best image quality that way anyhow.