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 <af...@kwisp.com> 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 <af-boun...@af.afmug.com> On Behalf Of Steve Jones
> Sent: Thursday, February 13, 2020 8:57 PM
> To: AnimalFarm Microwave Users Group <af@af.afmug.com>
> 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 <bigd...@gmail.com> 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 <part15...@gmail.com> 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 <ch...@wbmfg.com> 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 . <castarr...@gmail.com> 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 <af...@kwisp.com> 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 <af-boun...@af.afmug.com> On Behalf Of Mark Radabaugh
> Sent: Tuesday, February 11, 2020 2:24 PM
> To: AnimalFarm Microwave Users Group <af@af.afmug.com>
> 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 <thatoneguyst...@gmail.com> 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
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