[HamWAN PSDR] Site details?
Tom Hayward
tom at tomh.us
Thu Mar 16 22:17:00 PDT 2023
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!
> >>> _______________________________________________
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