Do you need two of these to make it work? Or do you need an internet connection?

You do not need two of these boards to work. For better accuracy, if you are not within a certain distance of a correction station, you may want to set up your own correction station with a 2nd GPS board. The board does not require an internet connection to communicate with your computer but you may want one for configuration and quick NMEA sentence viewing. But you can also connect it to a single board computer or microcontroller and add a screen if you prefer. There is a detailed hookup guide online for the board.

What is the lowest operating temperature ?

Unfortunately, we have not tested the operating temperatures of the board but the module is rated Operating temperature Topr -40 - 85 °C.

Besides the antenna connector type, is there any other difference between the gps-rtk-sma and the gps-rtk2?

The other main difference is that the GPS-RTK-SMA has a footprint so you can manually solder a connector for PPS to the board for your application. From the hookup guide: "Note: For those that need to connect a SMA connector to the PPS pin, the RTK-SMA includes a footprint so that you can manually solder the connector to the board for your application. The PPS output is helpful as a clock source correction when synchronizing equipment (not 1 Hz but in many MHz). The PPS output can be configured to output a very accurate clock which scientists use to correct less accurate, but much faster clocks. To configure, you can use the u-center to adjust The NEO-F9P's setting under View > Conviguration View > TP (TimePulse)."

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SparkFun GPS-RTK-SMA Breakout-ZED-F9P (Qwiic)-Voltage:5V or 3.3V Logic:3.3V | Concurrent reception of GPS GLONASS Galileo BeiDou High precision GPS 10mm 3 dimensional accuracy Receives L1C/A & L2C bands

SparkFun GPS-RTK-SMA Breakout-ZED-F9P (Qwiic)-Voltage:5V or 3.3V Logic:3.3V | Concurrent reception of GPS GLONASS Galileo BeiDou High precision GPS 10mm 3 dimensional accuracy Receives L1C/A & L2C bands

Product ID: 202355761

Details

Battery Life
14 days
Brand
SparkFun
Connectivity Technology
USB
Included Components
rechargeable
Map Type
Satellite
Model Name
GPS-RTK-SMA

⚡Ultra-fast 2s hot start

📡Dual-band L1C/A & L2C support

🛰️Multi-constellation GNSS reception

€ 515.57

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛰️ Elevate your location game—millimeter precision, zero compromises!

LIGHTNING FAST FIX TIMES - Cold start in 25s, hot start in just 2s—get your location data instantly and stay ahead of the curve.
SEAMLESS MULTI GNSS FUSION - Simultaneously track GPS, GLONASS, Galileo & BeiDou for unmatched satellite coverage and reliability.
PLUG PLAY QWIIC CONNECTIVITY - No soldering needed—integrate effortlessly with dual Qwiic connectors for rapid prototyping and deployment.
VERSATILE POWER PROTOCOL SUPPORT - Operates on 3.3V logic with flexible 5V/3.3V power input and supports USB, UART, I2C & SPI simultaneously.
PINPOINT PRECISION AT FINGERTIP SCALE - Achieve stunning 10mm 3D accuracy with RTK technology—know your exact location like never before.

The SparkFun GPS-RTK-SMA Breakout-ZED-F9P is a cutting-edge GNSS module delivering ultra-high precision 10mm 3D positioning by concurrently receiving GPS, GLONASS, Galileo, and BeiDou signals on dual L1C/A & L2C bands. Featuring rapid time-to-first-fix (2s hot start), versatile 3.3V logic with 5V power input, and plug-and-play Qwiic connectors, it supports rover and base station modes with multi-protocol connectivity (USB, UART, I2C, SPI). Ideal for professionals demanding pinpoint accuracy and seamless integration in advanced navigation and tracking applications.

Specifications

ASIN	B087T7BV6K
Additional Features	Qwiic
Battery Average Life	14 days
Best Sellers Rank	#216 in GPS Antennas
Brand	SparkFun
Built-In Media	rechargeable backup battery
Compatible Devices	Smartphone, Tablet
Compatible with Vehicle Type	Car, Truck, Motorcycle, SUV, RV, Boat, ATV, UTV, Snowmobile, Bus, Minivan, Golf Cart, Bicycle
Connectivity Protocol	USB
Connectivity Technology	USB
Control Method	Touch
Customer Reviews	4.5 4.5 out of 5 stars (16)
Display Type	touch screen
Human-Interface Input	Buttons
Item Dimensions L x W x H	1.71"L x 1.7"W x 1.7"H
Manufacturer	SparkFun Electronics
Map Types	Satellite
Mfr Part Number	GPS-16481
Model Name	GPS-RTK-SMA ZED-F9P
Model Year	2016
Mounting Type	Bayonet, found in image
Operating System	Linux
Screen Size	1.7 inches
Supported Satellite Navigation System	GPS
Touch Screen Type	Capacitive
UPC	845156010493
Unit Count	1 Count
Warranty Description	30 Days

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