Re: Digibox choice / UHF distribution

[Williams Christopher C <CCWILLIAMS@xxxxxxx>]

Have you seen the in-line UHF modulators that Maplin do?
I know you have UHF feeds, but perhaps you could use composite video
from some sources?
They do 3 modulators, one normal and one wide band.  The latter allows
you to select a channel from 21 to 69 (from memory).

Cheers

Chris Williams

> -----Original Message-----
> From:	paul gordon [SMTP:paul_gordon@xxxxxxx]
> Sent:	Thursday, January 20, 2000 10:27 PM
> To:	ukha_d@xxxxxxx
> Subject:	[ukha_d] Re: Digibox choice / UHF distribution
>
> Whilst on the subject of UHF distribution, does anybody know af any
> decent
> low-loss combiners? - I really don't want to use those "Y"
splitters
> in
> reverse...
>
> Basically, I have a 6 output distribution amplifier to feed the UHF
> network
> to each room, but typically for these devices, it only has 1 input.
> Now, I
> have several UHF devices that feed back directly to the amplifier in
> Node 0
> (door camera, PC with TV tuner card,) in addition to all the AV kit in
> the
> living room which is daisy-chained to each other in the usual way.
>
> This means that at the amplifier, I basically have 3 or 4 inputs, all
> of
> which I want to feed into the amplifier for distribution. In the past
> when I
> have used "Y" splitters/combiners I have usually seen an
immediate
> noticeable degredation in picture quality, so I want to avoid them if
> possible.
>
> Further to this (it gets a little bit more complicated!) I want the
> combiner
> to provide me with TWO outputs, as I want to put the PC with TV card
> between
> the combiner and distribution amplifier. The reason for this being
> that the
> PC TV card has a preview mode which allows simultaneous display of up
> to 16
> UHF channels, which I also want to be able to distribute:
>
> Something like the follwing: (sorry for the crude graphics)
>
> Door Cam ----> \            /----     ------------\                
 /
> TV Aerial ---> --> Combiner   2 outputs           
->combiner--> Amp -
> Satellite ---> /            \----     ---> PC TV--/             
    \
> A.N. other -->/
>
> I don't think it would be sufficient to just take a single combined
> feed
> into the PC TV card and out again, as the PC TV only outputs on one
> UHF
> channel, so all I would get then would be the preview channel.
>
> This will (I think) give me the ability to view on every TV in the
> house:
> TV Channel 1 through 5: BBC1.... CH5 etc off air via the main aerial
> TV Channel 6: Satellite TV, now via the shiny new digibox
> TV Channel 7: the front door camera
> TV Channel 8: a preview screen with a screen split into 8 showing ALL
> of the
> above in a separate window (which uses 7, leaving one spare...)
>
> The only hard part to all this, is combining all those different UHF
> feeds
> together without totally ballsing up the picture quality...
> Oh, and being able to find full range tuners to ensure sufficient
> channel
> seperation to avoid co-channel inteference of course! (Nice to see the
>
> Digibox uses UHF channel 68...)
>
> (If I had a pound for every hotel I've stayed in that had crap TV
> distribution....)
>
> Regards.
>
> Paul G.
>
>
>

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