I guess it depends on whether these are wooden poles or the metal towers that I find around here for long haul power.
-Kevin On Tue, Sep 21, 2010 at 12:18 PM, Mark Keymer <m...@viviotech.net> wrote: > Hi Kevin, > > That is easy. "Tree Climbing Spurs / Tree Climbing Spikes" A quick > Google search found these for sale. http://wesspur.com/spurs/spurs.html > > :) > > Sincerely, > > Mark > > > Kevin Neal wrote: > > How are the guys sent out on cross-country skis going to get up to the > fiber > > to repair it? I'm sure that the cable isn't low enough for them to reach > it > > without a ladder, bucket truck, helicopter.... all of which you don't > pack > > in on skis... > > > > > > -Kevin > > > > On Tue, Sep 21, 2010 at 12:02 PM, Seth Mattinen <se...@rollernet.us> > wrote: > > > > > >> On 9/21/2010 10:52, Holmes,David A wrote: > >> > >>> Modern telephone pole aerial fiber uses all dialectric self-supporting > >>> (ADSS) technology, where the self-supporting component consists > >>> primarily of aramid yarn, the same material used for bullet-proof > vests. > >>> This makes for an extremely light weight, almost indestructible fiber > >>> bundle. My guess is that ADSS fiber would deflect any bullets, or it > >>> would take a very good marksman using a very high caliber weapon to > >>> actually sever an aerial fiber. > >>> > >>> Now in the case described below where optical ground wire (OPGW) fiber > >>> is used as a component in the ground wire running at the top of high > >>> voltage transmission towers, it may be possible to hit the insulators > at > >>> the top of the towers, but the ground wire itself is usually armored, > >>> with ADSS inside. Seems far-fetched to me. > >>> > >>> > >> Back in my ISP days it was more common for people to take pot shots at > >> remote equipment cabinets than the cable/fiber itself. Any field > >> enclosure is as easy a target as your average bullet-ridden road sign. > >> Although this was extremely rare; I can only recall one instance where > >> it was the direct cause of an outage. > >> > >> ~Seth > >> > >> > >> > > >
