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Copy file name to clipboardExpand all lines: docs/correction_sources.md
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@@ -109,3 +109,26 @@ Various SparkFun RTK products support this new GNSS band (E6):
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* The RTK Facet mosaic's mosaic-X5 supports E6 reception. However, at the time of writing, the X5 firmware does not yet support the HAS service. Septentrio are planning to support it in a future firmware release.
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* The RTK Postcard's LG290P GNSS receiver has the ability to receive the E6 signals but as of writing, HAS is not yet implemented in the GNSS location engine.
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* The RTK Torch fully supports HAS/E6. The UM980 firmware needs to be 11833 or newer. See how to [Update the UM980 Firmware](./firmware_update_um980.md) for instructions. HAS/E6 is enabled by default and can be disabled in the [GNSS Menu](menu_gnss.md#galileo-e6-corrections) if desired.
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## L-Band Service
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Some companies broadcast an extra signal over geosynchronous satellites in something called the 'L-Band' which is really just a catch-all name for any broadcast between 1GHz and 2GHz. Because GNSS satellites broadcast their signal at ~1.57GHz (L1) and ~1.23GHz (L2), it is beneficial to broadcast an extra signal near these frequencies because the GNSS receiver hardware can be adapted to pick up this extra signal. Depending on the company, this signal adds additional correction data that can allow a GNSS receiver to obtain much higher accuracy than L1/L2/L5 positioning alone. But because broadcasting on satellites is exorbitantly expensive, the signal is often encrypted to force users to pay a subscription fee. The benefit of L-Band corrections is that they can cover an entire country or continent with corrections, without the need for internet connectivity, allowing for remote location to be surveyed, or scientific research conducted.
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For many years, u-blox provided a service called PointPerfect L-Band that was compatible with certain SparkFun RTK products (specifically [RTK Facet mosaic L-Band](https://www.sparkfun.com/sparkpnt-rtk-facet-mosaic-l-band.html), and [RTK Facet L-Band](https://www.sparkfun.com/sparkfun-rtk-facet-l-band.html)). Unfortunately, in July of 2025 u-blox announced the L-Band service to North America would be discontinued on December 31st, 2025. These products still function as high precision receivers, but they will need to switch to an internet based correction services to obtain an RTK Fix.
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## Remote Corrections
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What do you do if you need to get an RTK Fix but there is no L-Band or internet service? So how can users obtain corrections in remote areas? There are a few options.
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### Base/Rover Setup
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A base can be set on site and surveyed in with high accuracy in about 12 hours. Once that is completed a base can transmit corrections to the rover allowing the rover to obtain RTK Fix with high absolute accuracy. The connection between the rover and base can be accomplished with a variety of options. Please see [Correction Transport](correction_transport.md) for more information.
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### Remote Internet
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A few innovative users have reported using [Eutelsat KONNECT](https://europe.konnect.com/en-DE) or [Starlink Roam](https://www.starlink.com/us/roam) to gain internet connectivity in remote areas to then connect to a standard NTRIP corrections source.
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### Post Processing
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If real time kinematics is not needed, many SparkFun PNT devices can log raw GNSS satellite data onto an SD card where it can be post processed into very accurate location data.
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If you have an issue, feature request, bug report, or a general question about the RTK firmware specifically we encourage you to post your comments on the [firmware's repository](https://github.com/sparkfun/SparkFun_RTK_Everywhere_Firmware/issues). If you feel like bragging or showing off what you did with your RTK product, we'd be thrilled to hear about it on the issues list as well!
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Things like how to attach an antenna or other hardware-specific topics are best read on the Hookup Guides for the individual products.
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Topics like how to attach an antenna or other hardware-specific topics are best read on the Hookup Guides for the individual products.
Copy file name to clipboardExpand all lines: docs/menu_pointperfect.md
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PointPerfect Flex RTCM/NTRIP service uses a standard NTRIP interface to obtain corrections. Once [registered](#registration), to gain access to the PointPerfect system, the device must be given WiFi. The RTK device will automatically obtain **credentials**. These credentials will be copied into the NTRIP Client, and the NTRIP Client will be turned on. The device will then use WiFi (usually a cellular hot spot) to connect to the PointPerfect NTRIP Caster and begin providing the SparkFun RTK device with corrections. Within a few seconds, the device should change from RTK Float to RTK Fix.
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### PointPerfect Flex L-Band
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### PointPerfect Flex L-Band (Deprecated)
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**Note:** In July of 2025 u-blox announced the L-Band service to North America would be discontinued on December 31st, 2025. RTK Facet mosaic units, with a paid subscription to the L-Band service, can still use this signal up to December 31st, 2025, but afterward they will need to switch to an internet based correction services to obtain an RTK Fix.
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When this service is enabled, the device will attempt to connect to WiFi. If [registration](#registration) has been completed through SparkFun, the device will be issued L-Band specific keys and will obtain corrections over an extra signal broadcast by a geosynchronous satellite. The encrypted SPARTN packets are sent through the PointPerfectLibrary (PPL) and RTCM corrections are produced after ~60 seconds. The device will enter RTK Float, the RTK Fix states. Users report variable fix times with ok accuracy (not as good as RTCM service).
Copy file name to clipboardExpand all lines: docs/quickstart-facet-mosaic.md
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See [Corrections Sources](correction_sources.md) for a breakdown of the options and the pros and cons of each. For this quickstart, we'll be showing two examples: using PointPerfect L-Band for $50 a month; and PointOne Nav for $125/month for "True RTK".
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## PointPerfect Corrections
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## PointPerfect Corrections over L-Band
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One of the great features of the RTK Facet mosaic is that it has the ability to get corrections from PointPerfect over L-Band. No need for NTRIP credentials! [Contact SparkFun](https://www.sparkfun.com/rtk_facet_mosaic_registration) with your device ID, pay a monthly fee of $50 per month (as of this writing) and your device will obtain credentials and start receiving corrections anywhere in the contiguous USA.
1. Power on the RTK Facet mosaic device by pressing the Power button for 3 to 4 seconds until the OLED display illuminates.
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2. Put the RTK Facet mosaic into WiFi config mode by first tapping the power button. The OLED display will show a menu of choices. Tap the power button until **Config** is highlighted, then give the power button a quick double-tap to select config mode. Detailed instructions are available in [Configure with Browser](./configure_with_browser.md).
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3. From your phone, connect to the WiFi network *RTK Config*. You should be redirected to the WiFi Config page. If you are not, open a browser (Chrome is preferred) and type **rtk.local** or **192.168.4.1** into the address bar.
5.[Contact SparkFun](https://www.sparkfun.com/rtk_facet_mosaic_registration) with your Device ID and pay a monthly fee of $50 per month (as of this writing). It can take up to two business days for registration to complete. For now, press **Exit and Reset** and enjoy your RTK Facet mosaic without corrections.
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6. Once your Device ID resitration is complete, put the RTK Facet mosaic back into WiFi config mode by tapping the power button. The OLED display will show a menu of choices. Tap the power button until **Config** is highlighted, then give the power button a quick double-tap to select config mode.
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7. From your phone, connect to the WiFi network *RTK Config*. You should be redirected to the WiFi Config page. If you are not, open a browser (Chrome is preferred) and type **rtk.local** or **192.168.4.1** into the address bar.
8. Under the *WiFi Configuration* menu, give the device WiFi credentials for your local WiFi. This can be the cellphone hotspot if local WiFi is not available.
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<figure markdown>
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<figcaption markdown>
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WiFi Menu containing one network
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</figcaption>
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</figure>
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9. Under the [*PointPerfect Configuration* menu](menu_pointperfect.md), **Enable PointPefect Corrections** and select your **Geographic Region**.
It is important that you set your Geographic Region correctly, via the menu or web config page, as this determines both the IP correction distribution topic and the L-Band frequency (on L-Band-capable products). Sadly, u-blox are suspending their EU L-Band service on March 10th 2025. L-Band coverage will only be available in the contiguous USA from that date.
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10. Click **Save Configuration**. The device will record all settings in a few seconds. Then press **Exit and Reset**. The unit will now reboot.
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<figuremarkdown>
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<figcaptionmarkdown>
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Saving... then All Saved
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</figcaption>
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</figure>
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After the reboot, the device will connect to WiFi, obtain keys, and begin applying corrections. Assuming you are outside, after a few minutes of receiving PointPerfect corrections to the device, connect to the RTK Facet mosaic over SW Maps (or other) and the device will enter RTK Float, then RTK Fix (usually under 3 minutes). You can now take positional readings with millimeter accuracy!
**Note:** In July of 2025 u-blox announced the L-Band service to North America would be discontinued on December 31st, 2025. RTK Facet mosaic units, with a paid subscription to the L-Band service, can still use this signal up to December 31st, 2025, but afterward they will need to switch to an internet based correction services to obtain an RTK Fix. Please see [Correction Sources](correction_sources.md) for more information.
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