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Author Topic: Funny experience running TV cables under the house.  (Read 488 times)
John Schmidt
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a/k/a Stuffy. '99 I/S Valk Roadsmith Trike

De Pere, WI (Green Bay)


« on: August 12, 2016, 08:35:12 AM »

Our house is unusual for this area in that it has a crawl space under it. Some years back I wanted to move the computer and associated phone line(fax) to the other side of the house. The local cable folks obliged and the contractor ran the new cable all the way around the house and pool, creating nearly an extra 200' of cable length....and signal attenuation. I decided that straight across under the house was better, making the cable about 30' long. We have vents in the floor sealed off and no longer used for a/c and heat so when pulled out you have access to the crawl space. I borrowed a remote control truck from a neighbor's kid up the street, tied a light weight string to it which later was attached to the cable to pull it through and using a mirror and flashlight, sent it on its way. One problem....using a mirror I suddenly realized I'm sending it the wrong way; it's all backwards.  Grin  I pulled the truck back and started over, this time all went well and in less that 15 minutes I had my much reduced cable length and computer back in operation.

Fast forward to yesterday and the day before. Seems there was an interference problem generated somewhere in the original TV cable lines which had been installed over 30 yrs. ago, and was affecting a large section of the grid from which we operated. Two cable service maintenance guys stopped to do some testing and found some problems which they were able to correct, but finally decided to replace all the under-house cables. These two guys were a riot, had been working together for most of ten years, the smaller one was of normal size....~5'10", the other guy(named Hector) was a huge Puerto Rican that stood 6'6" and humor as dry as the Gobi desert. They couldn't finish the job because my wife had a dr. appt., but in our conversation re. the replacement of the longest run, I told them about my experience of using a remote control truck. So, yesterday morning they show up and what do they have.....a remote control ATV with big knobby tires, a light on the front with a camera. At first all went well until they hit some plastic(visqueen) left over from original construction and the wheels just spun on it. I told them to pull it back and add some weight which they questioned, but finally tried it and away it went. What did they use for weight?  Unknown to the smaller dude, Hector grabbed his lunch box and taped it on top. The little dude was at the other end watching for the ATV to reach his exit point and when it did he couldn't believe what he saw....his lunch box, and lunch, taped to the ATV. Hector just dryly told him "I've seen what you eat so I know it had to weigh a lot."  Needless to say, they finished the job midst various jokes and additional shenanigans. The result...no more pixilating of the TV screen and the computer doesn't freeze up as before. Plus, we had some good laughs in the process.
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Willow
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Excessive comfort breeds weakness. PttP

Olathe, KS


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« Reply #1 on: August 12, 2016, 08:41:12 AM »

 Smiley   cooldude
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Patrick
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VRCC 4474

Largo Florida


« Reply #2 on: August 12, 2016, 08:58:49 AM »

A bit off subject.
The cable companies refuses to run a cable line to the opposite side of the new [ to us] house.  The house has a crawl space but because of the carport the cable can't be run where I need it [patio]. Total about 40 ft.
So about the only way is to go around the house and bury it. [ about 150 ft]

Good quality burial cable today will have quality signal issues with that length ?  I'm hoping not.
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Gryphon Rider
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2000 Tourer

Calgary, Alberta


« Reply #3 on: August 12, 2016, 09:38:42 AM »

Great story!
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Psychotic Bovine
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New Haven, Indianner


« Reply #4 on: August 12, 2016, 02:50:16 PM »

A bit off subject.
The cable companies refuses to run a cable line to the opposite side of the new [ to us] house.  The house has a crawl space but because of the carport the cable can't be run where I need it [patio]. Total about 40 ft.
So about the only way is to go around the house and bury it. [ about 150 ft]

Good quality burial cable today will have quality signal issues with that length ?  I'm hoping not.

150 feet shouldn't be a problem. However, if you do experience an issue, you can run a cable tv amp.
But, from my quick google search, 150 feet should be fine.
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"I aim to misbehave."
Robert
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S Florida


« Reply #5 on: August 12, 2016, 02:59:55 PM »

The truck idea was a really cool idea you get extra points for inventiveness.  cooldude and great story about the guys.

150 of rg 6 is the max length and I would put it in a plastic pipe and get the amp anyway. If you want you can go to rg11 its thicker and for longer cable runs like up to 350.  The amps work great and keep the signal strength up and you dont have to use splitters in the house since most come with many connections on them. Each time you split a signal with a standard splitter you loose 3.5 db for each connection which is not all that much but it may be to much when you have many things to connect. Or if the signal from the cable company is not that great which most are not. You can check your signal strength yourself if you log into your modem. Since you are running cable anyway try to make sure you have the cable runs to each item seperate and run them to a common point and put the amp there. That way you can check each connection and loose the least signal and can service easily if there is a problem. Not to mention the amp will require another line be run for power its a standard rg 6 cable with a transformer that has the connections on it and on the amp for rg6.
« Last Edit: August 12, 2016, 03:15:21 PM by Robert » Logged

“Some people see things that are and ask, Why? Some people dream of things that never were and ask, Why not? Some people have to go to work and don’t have time for all that.”
Patrick
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VRCC 4474

Largo Florida


« Reply #6 on: August 12, 2016, 04:00:03 PM »

OK, thanks for the responses.

I don't have a problem with getting heavier cable. I'm kinda of the opinion that bigger is better. Wasn't sure whether amps really work or not.
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Robert
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S Florida


« Reply #7 on: August 12, 2016, 04:39:33 PM »

OK, thanks for the responses.

I don't have a problem with getting heavier cable. I'm kinda of the opinion that bigger is better. Wasn't sure whether amps really work or not.


Amp on my system works well but get a bi directional amp also the rg11 cable is a bit more of a pain to work with and the ends are a bit different. On line you can find the specs for cable drops and lengths of the 2 cables. But with the bidirectional amp you can still use the thinner cable if you want because the amp will help the signal. It will help you with the signal but will not compensate for a poor cable provider. If you have a cable modem you should be able to type in 192.168.100.1 and see the signal strength if your modem will allow it. 3.60 dBmV   38.98 dB is about where you want to be the dbmv as close to zero is where a good number of companies like to see it but plus or minus of zero by 4 is ok. Every split takes signal strength away as does every item connected to the cable. Thats why its a balancing act to come up with 0dbmv and better than 35 on the db for most cable providers. You may not need an amp if the signals fall in this range with everything connected but most providers lately dont service their lines and dont provide enough power.

http://www.parts-express.com/electroline-eda2500mma-4-port-rf-catv-distribution-amplifier--182-566


Run the cable yourself its not a big deal.
« Last Edit: August 12, 2016, 04:53:10 PM by Robert » Logged

“Some people see things that are and ask, Why? Some people dream of things that never were and ask, Why not? Some people have to go to work and don’t have time for all that.”
Patrick
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Posts: 15433


VRCC 4474

Largo Florida


« Reply #8 on: August 13, 2016, 07:59:02 AM »

This is a great place isn't it.  There are folks here with a lot of knowledge.

I looked up the coax specs. The 11 wire is quite a bit 'fatter' than the 6.  I was planning on burying it, but, I'm thinking about using conduit now and running along the eaves. That'll shorten up the wire length considerably.


But, anyway, thanks for the info.  
« Last Edit: August 13, 2016, 08:32:25 AM by Patrick » Logged
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