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.
