these are the conduit kits[image: Inline image 1] On Fri, Dec 15, 2017 at 12:04 PM, Adam Moffett <[email protected]> wrote:
> For power we've been running a pair of 16ga conductors up. You can get > 16/2 + shield with a heavy outdoor jacket from multiple vendors. Superior > Essex sells stuff that's intended for towers. You can also find outdoor > speaker wire which is cheaper and has similar specs. If you're running new > cables anyway, what's one more? > > I've been using pre-terminated fiber up the tower. Mostly because I don't > want the tower guy to have to splice. The tower guys don't usually have > that in their skill set anyway, and if the cable or connector broke I'm > just as happy to have them pull up a new pre-terminated cable as to try and > splice up in the sky. With the pre-terminated cable I had to special > request a very short breakout.....these days I might do the breakout myself. > > So far, the radio products we've used didn't have enough length in the > cable gland to accommodate the length of the LC connectors or the > breakout. So the solution has been to remove the cable gland and thread in > a short (6" or so) length of conduit with a male threaded adapter on one > end and a female threaded adapter on the other end. Male adapter goes into > radio where the cable gland was, original cable gland goes into the female > adapter. Then you have enough space for fiber connectors and a short > breakout. The only catch was some radios (Telrad for one) had metric > threads on the cable gland, so we had to get a metric to NPT adapter in > order to use locally available conduit parts. For cable lengths we were > getting 100' and 200' and we have spares of each. We end up with lots of > slack, but I don't see that as a bad thing. > > > > ------ Original Message ------ > From: [email protected] > To: [email protected] > Sent: 12/15/2017 12:26:37 PM > Subject: Re: [AFMUG] fiber/power on POPs > > Well, you need to convey 105/48=2.187 amps. > > 24 gauge is 2.5 ohms per 100 feet. If you used 4 wires for one polarity > and 4 wires for the other polarity, you would have .625 ohms per polarity > or 1.25 ohms per loop/100 ft. > > So 1.25 * 1.2 = 1.5 ohms for the 120 foot loop. > > 1.5 * 2.187 = 3.28 volt drop. And since you will really be running it of > of 54 volts if a battery is involved, you have even less current and more > voltage overhead. If the equipment will run at 44 volts you are golden. I > think you are golden. > > Yes, it is pretty sure to work. If not, use all the conductors on one > cable for one polarity and all the conductors of the other cable for the > other polarity. > > > > *From:* Steve Jones > *Sent:* Friday, December 15, 2017 9:52 AM > *To:* [email protected] > *Subject:* [AFMUG] fiber/power on POPs > > We are putting our first fiber to the radio, I have no clue the > components. It appears this link will have 4 LC connectors on single fiber. > > Theres a conduit kit for the radio, looks like 2 to each radio in 2+0 if > im understanding correctly. I figure we will need an enclosure at the top > for these to enter to let the fiber pairs split out. > > The two big questions are > > Can I get this cable in pre terminated patch cords affordably and just cut > the jacket back to get the pairs to the radios. > > If its preterminated without running big pipe, conduit is kind of out so > is just something copper clad similar to BBDGE recommended? > > Neither of these are more than 120 feet > > Our guy can splice at 70 bucks per, but im not sure how viable that is in > the air (these are grain elevators though) > > Both these radios have existing cat5 BBDGE, can I use that to run about > 105 watts @ 48volts split out to two radios at 120 feet? > > Im pretty excited to not have ethernet negotiation issues or surges > >
