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Science Forum Index » Electronics Forum » Wired TV RF distribution question
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| Alan White |
 Posted: Tue Aug 28, 2007 10:02 am |
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On Tue, 28 Aug 2007 15:25:44 +0100, charles
<charles@charleshope.demon.co.uk> wrote:
Quote: really. SCP&ID became Studio Capital Projects. Sound Sources was one of
the units. Once SCPD was disbanded, some of those people became Radio
Capital Projects.
As I remember it, and my seventy year old brain now finds it
increasingly difficult, when I joined P&ID in August 1963 it was
Planning and Installation Department. The next title was Studio Planning
and Installation Department (StuPID) which was very quickly changed to
Studio Capital Projects Department (SCPD). I moved to BBC Scotland in
January 1982 and lost track after that.
There was a Sound Section made up of Sound Sources Unit and Sound
Distribution Unit, in which I worked. When it was decided that sound and
vision Engineers were interchangeable, Television Distribution Unit and
Sound Distribution Unit metamorphosed into Broadcast Systems Unit A, of
which I was head when I left in '82, and Broadcast Systems Unit B.
Sound Distribution Unit was called LF and General Unit when I joined in
'63. What then was the name of the section and the other unit?
--
Alan White
Mozilla Firefox and Forte Agent.
Twenty-eight miles NW of Glasgow, overlooking Lochs Long and Goil in Argyll, Scotland.
Webcam and weather:- http://windycroft.gt-britain.co.uk/weather |
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| Jasen Betts |
| Posted: Sat Sep 01, 2007 6:19 am |
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On 2007-08-27, TheMekon <No.Mail@please.com> wrote:
Quote: Not sure if this is the right forum but here goes....
I need to distribute off-air TV round a client's premises to about 20
outlets as RF
Easy, I get my friendly aerial man to do a distribution amplifier etc.
(I am in the UK and we are talking about PAL system I)
And presumably also UHF.
Quote: Client also needs 6 channels of locally sourced video mixed in with the
distribution.
If it was 1 or 2 channels I would just get cheap modulators, choose a
couple of blank channels and mix it in with the off-air feed.
But doing 6 channels worries me.
Do I need to worry about the performance of cheap modulators?
Do I need to worry about intermodulation problems?
What else do I need to worry about?
keep the local modulatiors 30Mhz or more away from any TV signals and
try to get the signal strengths into the same ballpark.
Austar was doing about that many channels with consumer grade
modulatiion equipment. Typical hotel install: 6-12 satellite
decoders mixed in with local UHF TV.
Bye.
Jasen |
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