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 JonesSent: Tuesday, February 11, 2020 2:45 PMSubject: Re: [AFMUG] App or tool for CBRS GPSIf 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 marketOn 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
> --
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