Why do you see welding tanks (compressed O) hooked up to phone poles sometimes?One i saw today had regular airhose and connector headed up to top but couldnt see its termination.Drying out lines?
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life support systems..piped O2 right through the phone line, so people like my mom can catch their breath without stopping and missing a word..or let me get a word in sideways.
it's like playing the sax...circular breathing..
Spheramid Enterprises Architectural Woodworks
Repairs, Remodeling, Restorations.
I know, it's no fun to be serious, but it's probably nitrogen, and it's used to dry out the lines when they discover a problem with a bad jacket on a cable.
Your sure now that it is used to blow the static out of the lines when they get plugged up...
Back in the early days of the telephone it was reportedly a practical joke to call people and tell them to cover their telephone with a pillow case so their house wouldn't get dirty when they blew out the lines. Reportedly, a number of people complied...
I've hear a lot of those; my father was a telco eng for 35 yrs.....But really, the tank is a storage tank for the internet. In order to have redundancy, the internet is stored in tanks all over the country; they move them around to circumvent terrorism....
It's a wildlife conservationist thing, it's oxygen for high flying birds that need a break.
SamT
Tenpenny got it. They use tanks of liquid nitrogen to "gas up" the (usually) local lines with nitrogen gas to prevent oxidation. This is why the above ground phone line looks to be in a thick jacket (also why it it typically lowest on the pole, too). They use liquid nitrogen as the volume of the liquid is smaller than that of the gas, so the tank holds more (since it's under pressure, it also will fill the lines without needing pumps or the like, too).