[HamWAN PSDR] Site details?

Wade W7ITL w7itl.usa at gmail.com
Mon Mar 20 11:19:13 PDT 2023


I’m running a reliable connection Tacoma -> Haystack, and I consistently
achieve over 10Mbs / 10Mbs download/upload speeds with very low latency
under 20ms with a distance of over 85k / 52mi.

LOS is going to be the best factor in selecting a site for your setup.

73,
Wade W7ITL

On Fri, Mar 17, 2023 at 5:48 PM Nigel Vander Houwen <nigel at nigelvh.com>
wrote:

> To Tom’s point, the distance almost doesn’t matter. We’ve had links much
> farther than the 28 miles you’re looking at. You would of course want to
> select a client setup with the most gain possible for reliability, but
> almost universally if you can see it, you can connect.
>
> Nigel
>
> > On Mar 17, 2023, at 17:34, Nick Kartsioukas <nick at explodinglemur.org>
> wrote:
> >
> > I can see nothing from my roof.  From my original mail, "For example it
> looks like I "only" need a 35' mast for Baldi, but at 28mi away I'm not
> sure I can get connected reliably, vs Beacon or Capitol Park which are much
> closer but I'd need at least a 66' mast thanks to local terrain and
> trees."  Local terrain and trees are a challenge here which is why I want
> to gather and simulate as much as I can before I try to do something that a
> simulation would rule out.
> >
> > On Thu, Mar 16, 2023, at 22:17, Tom Hayward wrote:
> >> I can appreciate the desire to play around with the mapping tools and
> >> coverage models. I have done a lot of that myself.
> >>
> >> We've found that the most reliable predictor of coverage, aside from an
> >> RF survey, is a pair of binoculars. Can you see the tower while
> >> standing on your roof?
> >>
> >> Tom KD7LXL
> >>
> >> On Thu, Mar 16, 2023, 21:17 Nick Kartsioukas <nick at explodinglemur.org>
> wrote:
> >>> Because I enjoy playing around with radio coverage mapping tools and
> want to have the closest representation of reality?
> >>> I'm in an exceptionally non-optimal area for PSDR, so I want to have
> as much information as I can about required mast height and link budget for
> each site before I go actually installing anything.
> >>>
> >>> On Thu, Mar 16, 2023, at 15:45, Stephen Kangas wrote:
> >>>> Nick, I'm not certain why precision matters here.  My experience
> >>>> working with Bart & Doug assisting them putting up the Rattlesnake
> Mtn
> >>>> sector is that they may deviate from the exact bearing only to
> provide
> >>>> better coverage to the area below, avoiding obstacles and focusing on
> >>>> the user community.  We're not talking really narrow beams here.  You
> >>>> should be able to expect that if there is a sector antenna pointed to
> >>>> your area that it is optimized for your chances of connection
> >>>> regardless of how precise the sector antennas matches 0deg N bearing
> >>>> offsets.
> >>>>
> >>>> FWIW, Stephen W9SK
> >>>>
> >>>>
> >>>> -----Original Message-----
> >>>> From: PSDR <psdr-bounces at hamwan.org> On Behalf Of Carl Leon
> >>>> Sent: Thursday, March 16, 2023 3:16 PM
> >>>> To: 'Puget Sound Data Ring' <psdr at hamwan.org>
> >>>> Subject: Re: [HamWAN PSDR] Site details?
> >>>>
> >>>> Those are the standard. I think there is one single sector site where
> >>>> that varies, but am not certain.
> >>>> Carl, N7KUW
> >>>>
> >>>> -----Original Message-----
> >>>> From: PSDR <psdr-bounces at hamwan.org> On Behalf Of Nick Kartsioukas
> >>>> Sent: Thursday, March 16, 2023 9:51 AM
> >>>> To: psdr at hamwan.org
> >>>> Subject: Re: [HamWAN PSDR] Site details?
> >>>>
> >>>> Sorry, I phrased that part poorly.  Are all sectors aligned at
> >>>> 0/120/240 when present, or do they deviate from those bearings?
> >>>>
> >>>> On Thu, Mar 16, 2023, at 08:26, Doug Kingston wrote:
> >>>>> Not all the cell sites have every sector.  If a cell site is on the
> >>>>> side of a hill or has a large obstruction immediately adjacent, we
> >>>>> omit the sector facing into the obstruction as it would not serve
> any
> >>>>> useful purpose.
> >>>>> We have tried to depict the available sector in the map on the
> >>>>> website, but you may need to zoom in to see that detail.  If you
> have
> >>>>> questions about particular sites, Feel free to contact me directly
> >>>>> (dpk at randomnotes.org) or mail the netops@ list or ask on our IRC
> >>>>> channel.
> >>>>>
> >>>>> -Doug-
> >>>>>
> >>>>> On Wed, Mar 15, 2023 at 9:15 PM Nick Kartsioukas
> >>>>> <nick at explodinglemur.org> wrote:
> >>>>>> I've been able to find location info for most of the PSDR sites and
> antenna height info for some of them.  Do they all have sectors pointing
> 0/120/240 degrees relative to north?  Is there anywhere that has EIRP
> info?  I'm trying to see how tall a mast I need to get connected, and
> whether or not I can even make link for some of the sites.  For example it
> looks like I "only" need a 35' mast for Baldi, but at 28mi away I'm not
> sure I can get connected reliably, vs Beacon or Capitol Park which are much
> closer but I'd need at least a 66' mast thanks to local terrain and trees.
> >>>>>> At the moment I'm using https://ispdesign.ui.com/ (which now has
> LIDAR data for buildings/trees!) and have also used RadioMobile Deluxe in
> the past.
> >>>>>>
> >>>>>> Thanks!
> >>>>>> _______________________________________________
> >>>>>> PSDR mailing list
> >>>>>> PSDR at hamwan.org
> >>>>>> https://mail01.fmt.hamwan.net/mailman/listinfo/psdr
> >>>>> _______________________________________________
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> >>>>
> >>>> _______________________________________________
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> >>>>
> >>>> _______________________________________________
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> >>> _______________________________________________
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> >> _______________________________________________
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