[MLB-WIRELESS] Tool for checking LOS between nodes

Thu Jan 5 19:01:11 AEDT 2017

Seems to be behaving sensibly today, did you do anything or did it sort
itself out?

On Mon, Jan 2, 2017 at 10:49 PM, Daurnimator <quae at daurnimator.com> wrote:

> Yeah I found the site sometimes breaks like that.
> I re-imported the tower data: that seemed to fix it (possibly only
> temporarily?).
>
> On 2 January 2017 at 19:28, Morgan Reed <morgan.s.reed at gmail.com> wrote:
> > One oddity I'm noticing, I've got a lot of nodes on which the profile
> looks
> > 100% clear (nothing at all in the Fresnel zone), but the connection is
> shown
> > as <100% (and in several cases 0%, so fully obstructed).
> >
> > Is it looking at something in addition to what's shown in the profile?
> >
> > On Mon, Jan 2, 2017 at 6:14 PM, Morgan Reed <morgan.s.reed at gmail.com>
> wrote:
> >>
> >> That's WAY nicer than what I found elsewhere on their site, thanks.
> >>
> >> On Mon, Jan 2, 2017 at 5:52 PM, Daurnimator <quae at daurnimator.com>
> wrote:
> >>>
> >>> We also have a shared 'wisp' account for http://wisp.heywhatsthat.com/
> >>>
> >>> I'll email you some creds off-list.
> >>>
> >>> On 2 January 2017 at 17:49, Morgan Reed <morgan.s.reed at gmail.com>
> wrote:
> >>> > Ah, I presume you mean this;
> >>> > http://www.heywhatsthat.com/profiler.html
> >>> >
> >>> > I feel less bad about how ugly my tool is now ;)
> >>> >
> >>> > On Mon, Jan 2, 2017 at 5:14 PM, Morgan Reed <morgan.s.reed at gmail.com
> >
> >>> > wrote:
> >>> >>
> >>> >> Rummaged around the website a bit only thing I've found is broken
> >>> >> links,
> >>> >> care to point me in the right direction?
> >>> >>
> >>> >> On Mon, Jan 2, 2017 at 5:09 PM, Morgan Reed <
> morgan.s.reed at gmail.com>
> >>> >> wrote:
> >>> >>>
> >>> >>> Would've been nice if I'd have found that yesterday...
> >>> >>>
> >>> >>> On Mon, Jan 2, 2017 at 5:04 PM, Mitch Kelly <
> mitchkelly24 at gmail.com>
> >>> >>> wrote:
> >>> >>>>
> >>> >>>> The hey what's that path profiler does all of that and more
> >>> >>>> including
> >>> >>>> frequency and fresnel zone
> >>> >>>>
> >>> >>>> On 2 Jan 2017 2:02 PM, "Morgan Reed" <morgan.s.reed at gmail.com>
> >>> >>>> wrote:
> >>> >>>>>
> >>> >>>>> Hi All,
> >>> >>>>>
> >>> >>>>>        I was a MW member some many (10+) years ago, but never
> >>> >>>>> actually
> >>> >>>>> got around to doing anything about setting up a node (Partially
> >>> >>>>> lack of
> >>> >>>>> funds, but mostly because there wasn't anything in LOS from that
> >>> >>>>> place.)
> >>> >>>>>
> >>> >>>>> Many years on, the other day I was reminded by the DuxTel website
> >>> >>>>> that
> >>> >>>>> MW exists. Figured I'd stick my head back in, though I'm not sure
> >>> >>>>> how much
> >>> >>>>> activity there is in the community these days (the Website and
> >>> >>>>> Mailing List
> >>> >>>>> archives seem to suggest it's a bit of a ghost town).
> >>> >>>>>
> >>> >>>>> In anticipation of perhaps finally setting up a node I did some
> >>> >>>>> rummaging around to try to determine what nodes were within LOS
> >>> >>>>> from my
> >>> >>>>> current location, after an initial aborted attempt with Google
> >>> >>>>> Earth
> >>> >>>>> (seriously, who the hell implements a pathing function which
> >>> >>>>> DOESN'T snap to
> >>> >>>>> markers, oh and the elevation profile of a path ignores the
> >>> >>>>> elevation of the
> >>> >>>>> coordinates provided...), I spent a bit of time cooking this up
> >>> >>>>> today;
> >>> >>>>>
> >>> >>>>> https://tools.darkglade.com/mwLos/
> >>> >>>>>
> >>> >>>>> It's pretty ugly and the code is horrible (I might fix it one
> day),
> >>> >>>>> but
> >>> >>>>> it pretty much works.
> >>> >>>>>
> >>> >>>>> The only nodes it loads automagically are the ones in the Geelong
> >>> >>>>> region because that's where I live (if somebody wants to give me
> a
> >>> >>>>> full list
> >>> >>>>> of the active nodes, ideally in this format
> >>> >>>>> https://tools.darkglade.com/mwLos/nodes.json (or access to a
> >>> >>>>> database that
> >>> >>>>> has the data in it) I'll happily stuff that in the back).
> >>> >>>>>
> >>> >>>>> The chart down the bottom shows LOS (red), actual ground level
> >>> >>>>> elevation (blue), the two green traces are the ground level
> >>> >>>>> elevation lifted
> >>> >>>>> 4m (nominal height of a single storey building) and 7m (nominal
> >>> >>>>> height of a
> >>> >>>>> double-storey building) so you can tell more or less if you
> >>> >>>>> actually have
> >>> >>>>> LOS over surrounding buildings (at least if you're not surrounded
> >>> >>>>> by
> >>> >>>>> highrises).
> >>> >>>>>
> >>> >>>>> I arbitrarily picked two nodes in Geelong city for the initial
> >>> >>>>> start/end point, but if you plug your lat/long/alt (height of
> your
> >>> >>>>> antenna
> >>> >>>>> above ground) into the "Start" fields and hit "Update" you can
> then
> >>> >>>>> click
> >>> >>>>> around the other nodes to see the terrain profile between you and
> >>> >>>>> them. The
> >>> >>>>> "End" fields will allow you to plot to arbitrary coordinates if
> you
> >>> >>>>> want to
> >>> >>>>> see something that's not already on the map.
> >>> >>>>>
> >>> >>>>> One warning though, it won't be terribly accurate over long
> >>> >>>>> distances,
> >>> >>>>> as the Elevation API is limited to 512 points per request, as
> such
> >>> >>>>> long
> >>> >>>>> distances may be problematic (should be pretty good to ~5km
> >>> >>>>> though), if I
> >>> >>>>> can be bothered (and assuming there's a decent path splitting
> >>> >>>>> algorithm
> >>> >>>>> available in the APIs) I might fix that by breaking the paths
> down
> >>> >>>>> into
> >>> >>>>> smaller chunks and querying them separately.
> >>> >>>>>
> >>> >>>>> Figured it might be useful for other people.
> >>> >>>>>
> >>> >>>>> Morgan
> >>> >>>>>
> >>> >>>>>
> >>> >>>>> _______________________________________________
> >>> >>>>> Melbwireless mailing list
> >>> >>>>> Melbwireless at lists.wireless.org.au
> >>> >>>>> https://lists.wireless.org.au/mailman/listinfo/melbwireless
> >>> >>>>>
> >>> >>>
> >>> >>>
> >>> >>>
> >>> >>> --
> >>> >>> "They that can give up essential liberty to obtain a little
> temporary
> >>> >>> safety deserve neither liberty nor safety."
> >>> >>> -- Benjamin Franklin, 1759
> >>> >>
> >>> >>
> >>> >>
> >>> >>
> >>> >> --
> >>> >> "They that can give up essential liberty to obtain a little
> temporary
> >>> >> safety deserve neither liberty nor safety."
> >>> >> -- Benjamin Franklin, 1759
> >>> >
> >>> >
> >>> >
> >>> >
> >>> > --
> >>> > "They that can give up essential liberty to obtain a little temporary
> >>> > safety
> >>> > deserve neither liberty nor safety."
> >>> > -- Benjamin Franklin, 1759
> >>> >
> >>> > _______________________________________________
> >>> > Melbwireless mailing list
> >>> > Melbwireless at lists.wireless.org.au
> >>> > https://lists.wireless.org.au/mailman/listinfo/melbwireless
> >>> >
> >>
> >>
> >>
> >>
> >> --
> >> "They that can give up essential liberty to obtain a little temporary
> >> safety deserve neither liberty nor safety."
> >> -- Benjamin Franklin, 1759
> >
> >
> >
> >
> > --
> > "They that can give up essential liberty to obtain a little temporary
> safety
> > deserve neither liberty nor safety."
> > -- Benjamin Franklin, 1759
>

-- 
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-- Benjamin Franklin, 1759
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