[MLB-WIRELESS] Tool for checking LOS between nodes

[Morgan Reed]

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
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