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electricalperson
06-01-2008, 03:21 PM
does anyone here know how to detect where a cable signal could be leaking from? my buddies cable was shut off and not repaired due to a "open loop" and the customer service person i spoke too said it could be due to the signal being leaked somewhere. the house has a mix of old RG6 and RG59. im not sure if the cable service is grounded or not
chris kennedy
06-01-2008, 03:27 PM
Deja vu???
electricalperson
06-01-2008, 03:29 PM
?? :cool:
chris kennedy
06-01-2008, 03:35 PM
?? :cool:

My bad, I could swear you posted that same question yesterday. Just checked and it appears I'm nuts.

Sorry
don_resqcapt19
06-01-2008, 03:37 PM
Open (nonterminated) outlet point or unused ports on a splitter will do this. You can install a 75 ohm terminator (http://www.smarthome.com/7808.html) to solve the problem if this is the case
electricalperson
06-01-2008, 03:37 PM
My bad, I could swear you posted that same question yesterday. Just checked and it appears I'm nuts.

Sorry
i posted it on electriciantalk.com, i want to see if the holtaholics could help :grin:
electricalperson
06-01-2008, 03:38 PM
Open (nonterminated) outlet point or unused ports on a splitter will do this. You can install a 75 ohm terminator (http://www.smarthome.com/7808.html) to solve the problem if this is the case
thanks ill look into that
K2500
06-01-2008, 03:42 PM
Here's some FCC info.

http://www.fcc.gov/cgb/consumerfacts/cableleak.html
electricguy
06-01-2008, 04:35 PM
Here is some recent useful information

http://www.electrical-contractor.net/forums/ubbthreads.php/ubb/showflat/Number/177693/page/1/fpart/2#Post177924
electricalperson
06-01-2008, 04:43 PM
what kind of equipment do they use to detect leakages?
K8MHZ
06-01-2008, 07:06 PM
what kind of equipment do they use to detect leakages?

Get a hand held police scanner and tune to 145.25 which is ch 18 on CATV. Use it to try to find a strong signal. It's down and dirty but it will work. I have used a hand held ham radio on that frequency along with a home made directional antenna to locate a leak the CATV techs couldn't find a block from my home. Their fancy equipment got close, but couldn't zero in on it.
c2500
06-01-2008, 07:08 PM
I had an issue with that many years ago before I became a contractor. The cable inspector was not pleased that I had a splitter concealed in the wall. He was telling me how it interferred with air traffic controllers talking to planes (I have never investigated whether that is true or not) On the bright side, they did not turn me off....except for the time they mistook my cable access with the neigbor who was stealing cable. Unfortunately when they turned me back on, the free HBO was gone.

c2500
K8MHZ
06-01-2008, 07:13 PM
I had an issue with that many years ago before I became a contractor. The cable inspector was not pleased that I had a splitter concealed in the wall. He was telling me how it interferred with air traffic controllers talking to planes (I have never investigated whether that is true or not) On the bright side, they did not turn me off....except for the time they mistook my cable access with the neigbor who was stealing cable. Unfortunately when they turned me back on, the free HBO was gone.

c2500

Possible, but not likely. Air is in the 118-125 mHz range or so and is AM. They also have very strong signals. I live a few hundred feet from an airport. I also know the retired air traffic controller manager from that airport (a neighbor) and we have chatted about radio communications in the past.