The location wanders around so if you leave any gps stationary it will average the readings and give better accuracy.
Sent from my iPhone > On Feb 13, 2020, at 8:26 PM, Ken Hohhof <[email protected]> wrote: > > > I think part of it may be whether you are using WAAS. I used to have a > Garmin handheld GPS with WAAS and the accuracy would increase over several > minutes as it tracked more satellites and applied the WAAS corrections. Now > they have units that use both GPS and GLONASS and some even add Galileo. I > don’t know if that improves accuracy by giving you more satellites, or if it > just speeds up the process. > > Honestly though, if the structure is on Google Earth, that’s probably plenty > accurate. So the important thing might be a photo of the installation. > > > From: AF <[email protected]> On Behalf Of Steve Jones > Sent: Thursday, February 13, 2020 8:57 PM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] App or tool for CBRS GPS > > Can you elaborate on the accuracy over time > > On Thu, Feb 13, 2020, 7:44 PM Steve D <[email protected]> wrote: > I guess it all depends on how you do documentation. Myself, if I had my > way, I'd probably have our tech's run something like Smartsheet. Punch in > customer info, app will grab gps coords from phone, and have them all in a > handy dandy spreadsheet for your office people to attach to the customer > file. Apps like this are flexible in that you can set it up to record > whatever info you want, and it's (theoretically) easy for the monkeys to use > if you create forms for them. See: > https://www.smartsheet.com/content-center/product-news/product-releases/quickly-capture-share-exact-locations-from-your-mobile-device > . If you don't like to pay more monthly fees, I'm sure there are dozen > sketchier free apps that do the same thing. (I used to like one called > Memento until I learned it was made in Russia.) > > Hell, I'd not be surprised if Powercode/Sonar/etc start creating something > like it for their systems. Or the towercoverage guys (I think they had an > app anyway?). > > As far as accuracy, all phone app's rely on the hardware itself. If your > tech's phone is basically a potato, it's gonna be crap, but I think all > modern phones are pretty decent for GPS accuracy. 50m is a lot of wiggle > room, and even then, I know android does a pretty decent job just working out > location just triangulating from cell towers. Like Bill alluded to, GPS > takes time to lock in too. Some people turn off location for battery/privacy > reasons, but if you leave it on, it slowly narrows down your location better > over time. > > -Steve D > > On Tue, Feb 11, 2020 at 3:26 PM Bill Prince <[email protected]> wrote: > Altitude is the worst measure from GPS. Older Garmin handheld units would > vary by +/- 500 feet until they'd been on in a single spot for about 45 > minutes or so. I just turned on my phone GPS, and it's been running about 70' > to 100' too low. It may settle out near the actual altitude, but I don't know > how long that will take. > > I'd use Google Earth for a relatively accurate elevation for a given spot. > > > > bp > <part15sbs{at}gmail{dot}com> > > On 2/11/2020 2:17 PM, Steve Jones wrote: > Im not worried about altitude, was just looking for an accurate coordinate. > Are any phone apps any more accurate than others? is a garmin any more > accurate than a phone? > > On Tue, Feb 11, 2020 at 3:58 PM <[email protected]> wrote: > Garden variety GPS will give you crap for altitude. GPS in general is crap > for altitude. > Google Earth plus a tape measure is your best accurate solution for less than > multiple thousands of dollars. > > From: Steve Jones > Sent: Tuesday, February 11, 2020 2:45 PM > To: AnimalFarm Microwave Users Group > Subject: Re: [AFMUG] App or tool for CBRS GPS > > If I give any variance to the installers, they will push it too far. I dont > care that we get the 50 meters, I want it as accurate as possible. AGL is fin > for guessing, but GPS I want as accurate as possible and within reason. and > documented. > > Im thinking thats also going to be something the SAS administrators will be > offering is the high resolution plotting since they will need something to > market > > On Tue, Feb 11, 2020 at 3:11 PM castarritt . <[email protected]> wrote: > Horizontal accuracy is to within 50M, and if one of my guys has to carry his > ladder that far from where he parked the truck (which records GPS location > automatically), I'm sure I'll hear him bitch about it. > > On Tue, Feb 11, 2020 at 3:04 PM Ken Hohhof <[email protected]> wrote: > I guess in theory the SAS might grant you a lower EIRP than it otherwise > would if you overstate the height by a meter or two. Hard to believe that > will make a big difference. > > -----Original Message----- > From: AF <[email protected]> On Behalf Of Mark Radabaugh > Sent: Tuesday, February 11, 2020 2:24 PM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] App or tool for CBRS GPS > > Tape measure? $8/each on Amazon. They can lose a lot of those. > > Height tolerance is +/-3M (~9’). Each story of a house is ~10’. Did they > put it on the first, second, or third floor of the house? > > Mark > > > On Feb 11, 2020, at 3:11 PM, Steve Jones <[email protected]> wrote: > > > > Im not looking for a smartligner, we will get one hopefully for base > > stations > > > > For the installer, I need something the installer sticks in front of the > > radio to get the GPS. as I understand it, the AGL.ASL is not accurate from > > GPS, that needs to be tape measured or range finder. > > > > Is there an App for a phone that is more accurate than another or is that > > all dependent on the cell phone itself? > > > > Is there a fairly inexpensive device thats worth giving a tech to break too? > > > > Mainly I just want to have a screenshot of a GPS coordinate to attach to > > the customer file for CPI reference. > > > > There used to be a WISP app that you put in all your POP locations and it > > would give you your azimuth and best guess elevation from your current > > point, I think it even had a pointing arrow that never worked all that > > well., but I dont recall what was or if it still works > > -- > > AF mailing list > > [email protected] > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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