analogue video disruption
 

I watch Digital TV on my computer. It works fine after a bit of
tinkering. The wallplate (which I replaced with an F-type) goes to a
set-back amplifer (I know, I know) which is connected to a screened
splitter. This splitter then sends signal direct to my DTT card (Nova)
and also to my VHS which then goes into an analogue card in my
computer. All flyleads have been made myself using CT100 and Belling
connectors. The result is: previously unwatchable DTT (due to poor
signal and also interference from electrical equipment) is now very
watchable.

I still have the analogue card so I can watch the very occasional
video (mainly OU videos.) It gets its signal from the modulator in the
VHS. The only thing is there is a heck of a lot of interference.

If I watch analogue telly on the computer it works quite well with
minimal interference, even though it goes through a passthrough in the
VHS. However if I switch the analogue card to the video's output
channel things get very snowy / fuzzy, even if I only have the video
on BBC1 or something, i.e. not playing back.

I have tried changing the video's output channel. I have tried quite a
lot of channels. I have checked the channels I try are nowhere near
channels used for analogue or DTT on my local transmitters. Bizarrely
the higher the number the clearer the result - if I have the output
set to channel 21 it is completely unwatchable; channel 69 is better
but still not right.

The only thing I can think of is that the output on the VHS is poorly
screened - but in this case why does it not affect the passthrough
also?

Has anybody any suggestions on how I can improve matters?

Thanks!

analogue video disruption
 

"King Queen" wrote in message
...
I watch Digital TV on my computer. It works fine after a bit of
tinkering. The wallplate (which I replaced with an F-type) goes to a
set-back amplifer (I know, I know) which is connected to a screened
splitter. This splitter then sends signal direct to my DTT card (Nova)
and also to my VHS which then goes into an analogue card in my
computer. All flyleads have been made myself using CT100 and Belling
connectors. The result is: previously unwatchable DTT (due to poor
signal and also interference from electrical equipment) is now very
watchable.

I still have the analogue card so I can watch the very occasional
video (mainly OU videos.) It gets its signal from the modulator in the
VHS. The only thing is there is a heck of a lot of interference.

If I watch analogue telly on the computer it works quite well with
minimal interference, even though it goes through a passthrough in the
VHS. However if I switch the analogue card to the video's output
channel things get very snowy / fuzzy, even if I only have the video
on BBC1 or something, i.e. not playing back.

I have tried changing the video's output channel. I have tried quite a
lot of channels. I have checked the channels I try are nowhere near
channels used for analogue or DTT on my local transmitters. Bizarrely
the higher the number the clearer the result - if I have the output
set to channel 21 it is completely unwatchable; channel 69 is better
but still not right.

The only thing I can think of is that the output on the VHS is poorly
screened - but in this case why does it not affect the passthrough
also?

Has anybody any suggestions on how I can improve matters?

Thanks!

Could be card be tuning itself in to the lower sideband from the VCR
modulator?

Could you take the AV from the VCR's scart directly into the computer?

By the way, putting a setback amplifier before a splitter is logical enough.
It might be better nearer to the aerial, but even immediately in front of
the splitter it will help a lot.

Bill

analogue video disruption
 

On Tue, 18 Apr 2006 16:54:48 +0100, "Bill Wright"
wrote:

Could be card be tuning itself in to the lower sideband from the VCR
modulator?

Thanks - it is a possibility! I will try fine tuning it.

Could you take the AV from the VCR's scart directly into the computer?

I could do if I can get a relevant card, my analogue card doesn't have
a scart input. Can anybody recommend a suitable (cheap!) card?

By the way, putting a setback amplifier before a splitter is logical enough.
It might be better nearer to the aerial, but even immediately in front of
the splitter it will help a lot.

Thanks so much Bill.

Doug

analogue video disruption
 

King Queen wrote:
On Tue, 18 Apr 2006 16:54:48 +0100, "Bill Wright"
wrote:

Could be card be tuning itself in to the lower sideband from the VCR
modulator?

Thanks - it is a possibility! I will try fine tuning it.

Could you take the AV from the VCR's scart directly into the
computer?

I could do if I can get a relevant card, my analogue card doesn't have
a scart input. Can anybody recommend a suitable (cheap!) card?

Are you saying it's RF only without a composite input?
--
Adrian

analogue video disruption
 

On Tue, 18 Apr 2006 18:33:20 +0100, "Adrian A"
wrote:

Are you saying it's RF only without a composite input?

Yes. It is some ancient thing I bought without really knowing what I
was doing 6+ years ago.

Cheers