The $699 RTK FACET in the product overview says - two paragraphs after the Bullet points
Unlike standard grade GPS receivers that have 2500mm accuracy, the accuracy in this mode is approximately 300mm horizontal positional accuracy. and one of the bullets says
GNSS Positioning (~30cm accuracy) - also known as ‘Rover’ and note next bullet down says 1.4cm when getting RTK Fix
However product specifications at the bottom say Horizontal accuracy is only 2.5m without RTK implying Meters I believe not 2.5mm or 25mm (they used lower case m) so I am assuming they mean accuracy is 2.5 METERS without RTK.
What level of accuracy have those of you with $699 RTK FACET been able to get without an RTK fix? 2.5 Meters which is not much better than my Apple iPhone 11 which is about +/- 15ft to 30ft
Or did you achieve 30cm (centimeter) accuracy as mentioned in the Bullet Points and paragraphs of description?
Or did they accidently mix up descriptions between RTK Facet and RTK Facet L-Band?
You can also consider the Facet and the Facet L-Band to be equivalent when using the same correction source. The L-Band variant obviously has a built-in method to receive Point Perfect corrections from the Inmarsat satellite, which is 1 of many correction sources available to you.
I consider the Facet L-Band to be an “Easy Button” for certain applications, but it’s just one tool in the toolbox. Your Project/Application Goals (and the location) would dictate the best RTK correction source to use.
After studying a bit more Torch and FACET L Band can both use NTRIP if you aren’t paying for a PointPerfect Subscription if I am reading the documentation correctly. And Torch has the new E6 for free “better accuracy” but documentation doesn’t seem to clarify how accurate E6 alone without NTRIP or Point Perfect the unit would be unless that still means the “Autonomous” 1.5m would be the accuracy.
What are you looking to do. I found using my states RTN I got decent results like .05’ horizontal with the facet but heights were like .15’ whereas a l5 antenna like what the torch uses I got 0.04’ horizontal and like 0.05 to 0.08 vertical.
My States NTRIP is via TDOT (Tennessee Department of Transportation) and is only for Highway projects, so I cannot use it for my farm, however I did point out to them a lot of farms are starting to use GNSS… Their closest NTRIP is over 70 miles from me so it doesn’t matter. I am just using it to get as close to my property line as possible as I clear a perimeter fire break. I’d like it to be as accurate as possible, but if it’s off even 2ft not a huge deal, but since I started down the rabbit hole, I’m looking to see if I can get it +/~ within a few inches. So if E6 level corrections in the SparkFun Torch get me to 5centimeters… I might just need to buy that for my birthday…
What have you seen with the Torch without NTRIP or PointPerfects corrections. Just using native antenna and hopefully a successful E6 level correction. And which apps are you using? Android or iOS? I’m only iOS currently. Thanks for your answers and in advance for your insight
From what I read the E6 receiver on the Torch should get it to a few centimeters. 1.5meters sounds disappointing to me. Per the manual the firmware must be a certain version to receive and process E6 signals and perhaps cannot be used in USA?
I’m still learning a lot, so thanks for your input on your experience with the torch.