For some reason this thread reminded me of G line...
https://en.wikipedia.org/wiki/Goubau_line
From: Eric Kuhnke
Sent: Thursday, July 07, 2016 2:39 PM
To: af@afmug.com
Subject: Re: [AFMUG] Practical/low-cost 18AWG copper outdoor
Local hippies will go nuts if we start drilling many dozens of trees and
attaching stuff. The place where the PTP radios go on the far end of the copper
and fiber can have some trees trimmed...
Thankfully this is in an area where there is zero risk of damage from off
road/ATV or 4x4s, somebody would have to maliciously go into the forest and
decide to mess with the fiber. Squirrel and mouse/rat chewing is definitely
something to think about.
On Thu, Jul 7, 2016 at 7:18 AM, Chuck McCown <ch...@wbmfg.com> wrote:
Aerial. Use drive hooks in trees. Run a messenger strand for support and
zip tie the cables to it. Better yet lash it.
From: Eric Kuhnke
Sent: Wednesday, July 06, 2016 11:21 PM
To: af@afmug.com
Subject: Re: [AFMUG] Practical/low-cost 18AWG copper outdoor
Now to figure out how to economically do 2250+ ft (about 700m) of somewhat
flexible duct through a forest...
On Wed, Jul 6, 2016 at 8:03 PM, That One Guy /sarcasm
<thatoneguyst...@gmail.com> wrote:
always do a duct, always. A cable of any type is always nice, but a really
long hole is always better. When I become rich man and can put stuff in dirt it
will always be a path for something else. Expensive containers and cheap
removable innards, like those washable condoms of yore.
On Wed, Jul 6, 2016 at 9:24 PM, Trey Scarborough <t...@3dsc.co> wrote:
what are you planning on using for the fiber? just laying it on the
ground as well. I would use liquid tight and pull through some solid 18awg that
would last the longest or some inch and a quarter duct and pull both through.
On 7/6/2016 1:38 PM, Jeremy wrote:
Not sure what kind of rodents you have there, but I definitely recommend
conduit and buried. I have seen conduit not buried through the woods
and it gets squished and broken (if it is PVC) by Moose, deer, etc. I
have seen direct burial not in conduit eaten by Gophers or Voles or some
crap. Those kind of jobs are usually the type that you don't want to do
twice.
On Wed, Jul 6, 2016 at 11:14 AM, Chuck McCown <ch...@wbmfg.com
<mailto:ch...@wbmfg.com>> wrote:
Use isolation transformers. And call it a speaker wire. You are
sending a loud 60 cycle tone.
*From:* Eric Kuhnke <mailto:eric.kuh...@gmail.com>
*Sent:* Wednesday, July 06, 2016 11:10 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] Practical/low-cost 18AWG copper outdoor
Yeah, can't do either of those... Burying it to Canadian electrical
code compliant depth through 700 meters (2296 ft) of forest, fallen
trees and rocks isn't going to happen. There is the slight
possibility of electrical inspection based on where the power would
be coming from.
Using a 110/240VAC input active PFC 200W power supply that can
output 54.5VDC and a DC-DC converter on the load end to bring things
back to normal 46-48VDC will work.
AC to DC meanwell RSP-200-48, $41
DC-DC meanwell SD-200C-48 $71
On Wed, Jul 6, 2016 at 9:44 AM, Bill Prince <part15...@gmail.com
<mailto:part15...@gmail.com>> wrote:
Or you could buck it to 480VAC or more...
bp
<part15sbs{at}gmail{dot}com>
On 7/6/2016 9:34 AM, Chuck McCown wrote:
240 AC over direct burial romex. All the power you might
want.
*From:* Eric Kuhnke <mailto:eric.kuh...@gmail.com>
*Sent:* Wednesday, July 06, 2016 10:29 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] Practical/low-cost 18AWG copper outdoor
It's looking like $0.25/ft for the cable and the singlemode
fiber is less... Also the area is totally filled with trees,
trees cannot be cut for various reasons, it's the side of a
bluff on a hilltop. Branches and a few things in one
particular direction (about 10 degrees of azimuth) would be
cut to put in the PTP link. North of 49 latitude.
With DC power over 14AWG it could be enough power for up to
75W of radios on the far end. Off grid solar to do this would
be $4000 of panels batteries enclosure, charge controller.
Very challenging site for solar, if you were to camp there you
might see 2-3 hours of direct sunlight per day max due to tree
shading.
On Wed, Jul 6, 2016 at 8:57 AM, Bill Prince
<part15...@gmail.com <mailto:part15...@gmail.com>> wrote:
For that amount of cable, at 50 cents a foot, I would
probably do a small solar setup. What is the latitude?
bp
<part15sbs{at}gmail{dot}com>
On 7/5/2016 4:25 PM, Eric Kuhnke wrote:
Due to terrain I'm helping somebody design a network
link where a PTP radio will go on the side of a tree
on the opposite side of a mountain from where AC
power, a router and other network equipment is
located.
We're looking at 600 to 700 meters of singlemode fiber
and a small NEMA4X junction box with the radio on the
far side of the hill, containing a SC-SC patch cable
bulkhead and a meanwell DC-DC converter.
It looks like based on the wattage of the radio and
voltage drop calculations for 18-2 cable that we can
get away with a 56VDC power supply at the power
source, dropping to not lower than 35VDC at the
receiving end, which will be fed into a DC-DC
converter to bring the output back up to 52.5VDC for
the radio.
If you had to run 600-700m of 18AWG cable outdoors
through a forest, how would you do it? SJOOW type
cable may not hold up over a long enough time. Ideally
something that is more armored than SJOOW (it can be
much less flexible if needed). Cost is somewhat of a
factor.
--
If you only see yourself as part of the team but you don't see your team as
part of yourself you have already failed as part of the team.
