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#5020 - 10/27/01 07:19 PM TV, Alarms, Telephone  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Being of an electronics background (I think the proper term is "Mad scientist"), I've somuetimes been asked to install TV distribution systems, alarm systems, telephone etc.

Just wondering if any of you also get involved with this sort of work as well.


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#5021 - 10/27/01 07:36 PM Re: TV, Alarms, Telephone  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,308
Sure we do Paul,
why should the cable guy have all the fun?
check out the goods; http://www.leviton.com/lin/pdf/productcat/cablingdistribution.pdf
these days the old 'daisychain' methods have given way to exclusive home runs ending in these distrubution centers.
I even have a phone set & tracer that can hang off my toolbelt [Linked Image] , look just like a ph-co wannabe!


#5022 - 10/28/01 07:34 AM Re: TV, Alarms, Telephone  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Yep, central TV distribution amps. are becoming more common here as more people want their satellite/VCR/DVD outputs available all round the house. We've yet to see many of the big "home theatre" setups that are becoming more popular in the States though. For most folk the cost of these monsters at U.K. prices is just way too much, plus the fact that basements for conversion are rare here.

Telephones are one aspect of electronics & communications I find fascinating, especially the older developments & equipment. My first job on leaving school was actually with British Telecom at a satellite station handling overseas TV/telephone/telex.

Anyone interested in this sort of thing might like to have a look here:
http://www.light-straw.co.uk/ate

(Includes one section on power for exchanges.)


#5023 - 11/02/01 12:54 PM Re: TV, Alarms, Telephone  
JBfdvt80  Offline
Junior Member
Joined: Nov 2001
Posts: 5
Scranton Pa. U.S.A.
If you are installing a CATV distribution forget the AMP. Try a 1x8 13db splitter and equip all unused legs with 75 ohm terminators. The signal from every cable company I have ever dealt with is to HOT. Amps generly last 18 to 36 months.


#5024 - 11/02/01 03:27 PM Re: TV, Alarms, Telephone  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Hello JB,

Do you have any specific levels for typical cable signals? Are cable levels regulated by the FCC in any way? Just curious.

Cable TV has been much slower to catch on in Britain than in America. It's only just started to become available in large towns in the last few years, so few people have it yet. Out here in the sticks it's not an option.

For distribution of regular broadcast TV we can get away with passive splitters in strong signal areas, but all our transmissions are now UHF, so a 5 or 6-way split at 40 miles plus really starts to show the noise without an amp.



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