{"product_id":"adafruit-746-ultimate-gps-breakout-66-channel-w-10-hz-updates-version-3","title":"Adafruit 746 Ultimate GPS Breakout - 66 channel w\/10 Hz updates - Version 3","description":"\u003cmeta name=\"description\" content=\"Buy Adafruit 746 Ultimate GPS Breakout - 66 channel w\/10 Hz updates - Version 3 online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eAdafruit 746 Ultimate GPS Breakout - 66 channel w\/10 Hz updates - Version 3\u003c\/h1\u003e\n\n\u003cp\u003eThe Adafruit 746 Ultimate GPS Breakout is a high-precision GNSS receiver module featuring 66 satellite channels with 10 Hz update rates, designed for demanding positioning applications requiring real-time accuracy and reliability. Professional surveyors, drone operators, autonomous vehicle developers, and IoT engineers rely on this module to achieve sub-meter level positioning with exceptional signal acquisition speed even in challenging RF environments. This breakout solves critical timing synchronization and location accuracy challenges in applications where standard GPS modules fail to deliver consistent performance under dense foliage, urban canyon conditions, or rapid vehicle movement scenarios.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe Adafruit 746 Ultimate GPS Breakout integrates a multi-constellation GNSS receiver capable of simultaneously tracking GPS, GLONASS, Galileo, and BeiDou satellites across 66 independent channels. This multi-constellation approach dramatically improves fix acquisition time and positional accuracy by leveraging redundant satellite signals from multiple global positioning systems. The 10 Hz update rate enables real-time trajectory tracking suitable for high-speed applications, while the integrated antenna provides excellent sensitivity with typical -165 dBm tracking capability. The module communicates via UART and I2C interfaces, making integration straightforward with Arduino, Raspberry Pi, and industrial microcontroller platforms.\u003c\/p\u003e\n\n\u003cp\u003eVersion 3 represents the latest hardware iteration with enhanced firmware supporting advanced features including SBAS augmentation (WAAS, EGNOS, MSAS), raw measurement output for post-processing applications, and configurable update rates from 1 Hz to 10 Hz. The breakout board includes convenient 0.1 inch pitch headers, integrated voltage regulation for 3.3V operation, and built-in backup battery support for rapid hot-start positioning. The module achieves typical horizontal accuracy of 2.5 meters in open sky conditions and maintains performance in weak signal scenarios through advanced acquisition algorithms and coherent tracking techniques.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMulti-Constellation GNSS Receiver Breakout Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAdafruit Industries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSatellite Channels\u003c\/td\u003e\n\u003ctd\u003e66 parallel channels with multi-constellation support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Rate\u003c\/td\u003e\n\u003ctd\u003e10 Hz maximum, configurable 1-10 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition Accuracy\u003c\/td\u003e\n\u003ctd\u003e2.5 meters horizontal (open sky)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime to First Fix\u003c\/td\u003e\n\u003ctd\u003eCold start 45 seconds, hot start 5 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Sensitivity\u003c\/td\u003e\n\u003ctd\u003e-165 dBm tracking, -148 dBm acquisition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interfaces\u003c\/td\u003e\n\u003ctd\u003eUART (9600-115200 baud), I2C (400 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V with onboard voltage regulator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e35mm x 35mm x 12mm breakout board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e66 Parallel Satellite Channels with simultaneous GPS, GLONASS, Galileo, and BeiDou constellation tracking for superior fix reliability in urban and obstructed environments\u003c\/li\u003e\n\u003cli\u003e10 Hz Position Update Rate enabling real-time trajectory monitoring for high-speed applications including UAVs, autonomous vehicles, and dynamic surveying operations\u003c\/li\u003e\n\u003cli\u003eDual Interface Support via UART and I2C protocols allowing flexible integration with Arduino, Raspberry Pi, STM32, and custom embedded systems without additional serial converters\u003c\/li\u003e\n\u003cli\u003eIntegrated Backup Battery Connector supporting rapid hot-start positioning within 5 seconds by maintaining ephemeris data and oscillator frequency reference between power cycles\u003c\/li\u003e\n\u003cli\u003eSBAS Augmentation Compatibility with WAAS, EGNOS, and MSAS systems providing differential corrections for meter-level accuracy improvements in supported regions\u003c\/li\u003e\n\u003cli\u003eAdvanced Signal Processing with -165 dBm tracking sensitivity enabling reliable positioning under dense vegetation, urban canyons, and weak signal conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003ePrecision Agriculture and Drone Mapping: Achieve centimeter-level positioning repeatability for autonomous agricultural drones performing field mapping, crop monitoring, and variable rate application with 10 Hz update rates ensuring smooth flight path recording\u003c\/li\u003e\n\u003cli\u003eAutonomous Vehicle Navigation: Multi-constellation tracking provides robust localization for self-driving prototypes and autonomous delivery robots operating in GPS-denied urban environments with high-speed maneuver tracking\u003c\/li\u003e\n\u003cli\u003eProfessional Surveying and GIS Data Collection: Real-time 10 Hz positioning combined with SBAS augmentation delivers survey-grade accuracy for boundary mapping, infrastructure inspection, and environmental monitoring without expensive RTK systems\u003c\/li\u003e\n\u003cli\u003eHigh-Speed Sports and Motion Analysis: Track athletes, race vehicles, and aerial platforms with 10 Hz granularity capturing detailed trajectory data for performance analysis, safety monitoring, and competitive applications\u003c\/li\u003e\n\u003cli\u003eIoT Fleet Management and Asset Tracking: 66-channel architecture ensures continuous positioning lock for logistics vehicles, construction equipment, and mobile assets operating across diverse terrain and weather conditions\u003c\/li\u003e\n\u003cli\u003eScientific Research and Atmospheric Studies: Raw measurement output mode enables post-processing ionospheric corrections and advanced data fusion applications for research institutions and meteorological studies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eBegin by connecting the Adafruit 746 to your microcontroller platform using either the UART or I2C interface. For UART connection, wire the TX pin to your microcontroller's RX input and RX pin to the TX output, maintaining 3.3V logic levels. For I2C operation, connect SDA and SCL lines with appropriate pull-up resistors (typically 10k ohms). Power the module with 3.3V through the onboard regulator which accepts 3.3V to 5V input. Install the Adafruit GPS library for Arduino or equivalent Python library for Raspberry Pi, then configure the serial port parameters to 9600 baud (default) and begin parsing NMEA sentences or accessing raw measurement data through library functions.\u003c\/p\u003e\n\n\u003cp\u003eFor optimal performance, mount the antenna in a location with clear sky visibility above the horizon plane, avoiding nearby metal structures and RF-emitting equipment that could degrade signal reception. Configure the update rate to match your application requirements using AT command sequences or library functions, balancing power consumption against positioning frequency needs. If implementing hot-start functionality, connect a 3.3V backup battery to the designated connector to maintain oscillator frequency and ephemeris data during power cycling, reducing time-to-first-fix from 45 seconds to approximately 5 seconds on subsequent power-up. Enable SBAS augmentation in your configuration if operating in WAAS, EGNOS, or MSAS coverage areas to achieve differential corrections improving horizontal accuracy to 1-2 meters.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between 66 channels and traditional 12-channel GPS receivers?\u003c\/summary\u003e\n\u003cp\u003eThe 66-channel architecture allows simultaneous tracking of satellites from multiple constellations (GPS, GLONASS, Galileo, BeiDou) rather than sequential processing. This provides several advantages: faster time-to-first-fix by evaluating more satellites simultaneously, improved accuracy through redundant positioning solutions, superior performance in obstructed environments like urban canyons and forests where fewer satellites are visible, and better resistance to signal blockage or jamming. Each channel independently tracks one satellite, enabling the receiver to maintain lock on 66 different satellites at once compared to traditional receivers that track 12 satellites sequentially.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow does 10 Hz update rate benefit my application compared to 1 Hz standard GPS?\u003c\/summary\u003e\n\u003cp\u003eThe 10 Hz update rate provides position solutions ten times per second instead of once per second, enabling superior trajectory reconstruction for moving platforms. For drone applications, this captures detailed flight path information revealing control surface responses and wind effects. For autonomous vehicles, 10 Hz positioning improves path planning accuracy and enables faster obstacle avoidance calculations. In sports analytics, the higher sampling rate reveals micro-movements and acceleration profiles impossible to detect with 1 Hz updates. The tradeoff is increased power consumption and data bandwidth, making 10 Hz ideal for battery-powered applications requiring high-fidelity motion data.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I achieve RTK-level accuracy with this module or do I need additional hardware?\u003c\/summary\u003e\n\u003cp\u003eThe Adafruit 746 alone provides 2.5-meter horizontal accuracy in open sky and 1-2 meters with SBAS augmentation, which is survey-grade but not RTK-level. True RTK accuracy requires a reference station transmitting differential corrections via radio or cellular network, which this module does not support natively. However, the raw measurement output mode allows connection to external RTK correction services or post-processing software like RTKLIB for achieving centimeter-level accuracy. For real-time RTK functionality, consider pairing this module with an external RTK correction receiver or upgrading to RTK-capable modules from Adafruit or other manufacturers that include correction input interfaces.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat power consumption should I expect and does the backup battery significantly extend operating time?\u003c\/summary\u003e\n\u003cp\u003eThe Adafruit 746 draws approximately 45-55 mA during normal operation at 3.3V, consuming roughly 150-180 mW. The backup battery does not extend continuous operating time but rather maintains internal state during power loss, enabling rapid hot-start acquisition within 5 seconds versus 45 seconds for cold-start. A typical CR1632 coin cell backup battery maintains this state for several months. For extended battery-powered applications, implement periodic positioning updates at lower rates (1-2 Hz) and use sleep modes between fixes to reduce average power consumption significantly below the peak 55 mA rating.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support:\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuy Adafruit 746 Ultimate GPS Breakout - 66 channel w\/10 Hz updates - Version 3 Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eAdafruit 746 Ultimate GPS Breakout - 66 channel w\/10 Hz updates - Version 3\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43853794640035,"sku":"TES-EV02917","price":3424.86,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/746-11-228x228.jpg?v=1704192569","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/adafruit-746-ultimate-gps-breakout-66-channel-w-10-hz-updates-version-3","provider":"The Engineer Store","version":"1.0","type":"link"}