10 Best Global Positioning Systems In The Us - Black Friday 2024
Best Choice1
GOOZEEZOOGOOZEEZOO 2024 Upgraded GPSDO NEO-6M Global Positioning System Disciplined Oscillator Accurate & Fast: ±0.001Hz/Square Wave (Without Power Supply)
Main highlights- When the PPb value is observed within 0.0±1, press the encoding switch to enter the menu. Rotate the encoder to find the "PWMSET" option and press the encoder switch to save the current PWM value. Rotate encoder again and find "EXIT!! OK "and press the encoder switch to exit the menu. At this point, the calibration is basically completed. After calibrating and saving the PWM value, it is not necessary to install the GPS antenna for subsequent use
- Portable & Widely used: The GPSDO is a highly portable device that can be taken anywhere for various needs, thanks to its compact dimensions of 5.9 * 3.5 * 1.5 inch. GPSDO is suitable for high-end audio decoders, frequency meters, signal generators and other devices with external 10MHz reference source input
- How to Calibrate: When powered on,the screen displays "10.00MHz GPSDO". If there is no GPS antenna installed, this content will continue to be displayed. Once the GPS antenna is installed and satellite locked, the screen will display the correction value of PPb after comparing with the 1PPS signal and the current PWM adjustment value. It takes about 30 minutes for the initial calibration
- High-precision: Output frequency: 10.000000.000MHz ±0.001Hz; Supply voltage: DC12V ±2V; Working current: 350mA; 650mA(preheating); Output waveform: square wave; Output amplitude: -45dBm; Thermostatic crystal: ISOTEMP OCXO 143-141(disassembly); GPS module: NEO-6M
- Accurate & Fast: It uses the GPS 1PPS signal, compares it with the microcontroller, and outputs a 16-bit PWM signal to control the output accuracy of the temperature-compensated crystal. The voltage for fine-tuning the frequency of the temperature-compensated crystal is 0-5V. Therefore, 1 bit of PWM can control the output voltage to be 0.000076V
- 2024 New Upgrade: This GPSDO, compared to a regular timebase, can quickly locate problems. It has higher accuracy, lower temperature drift, and more stable output
9.8Exceptional
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Value for Money2
AIAA (American Institute of Aeronautics & Astronautics)Global Positioning System: Theory and Applications, Volume II
Main highlights- Used Book in Good Condition
9.7Exceptional
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3
SpringerGlobal Positioning System: Theory and Practice
9.6Exceptional
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4
Ganga-Jamuna Press14% OffGlobal Positioning System: Signals, Measurements, and Performance (Revised Second Edition)
9.5Excellent
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5
Parkinson, Bradford W. (EDT)/ Spilker, James J. (EDT)Global Positioning System: Theory & Applications (Volume One) (Progress in Astronautics & Aeronautics)
9.3Excellent
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6
Wiley27% OffGlobal Navigation Satellite Systems, Inertial Navigation, and Integration
9.2Excellent
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7
LAP LAMBERT Academic PublishingGlobal Positioning Navigation Satellite Systems (GPNSS)
9.1Excellent
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8
WeytollWeytoll GPS Tamed Thermostatic Crystal Oscillator GPS Tamed Clock 10MHz Signal Source Global Positioning System Disciplined Oscillator with Multifunctional Interfaces
Main highlights- 【Wide Applications】: With wide application scenarios, it is suitable for high-end o decoders, instruments, meters, frequency meters, signal sources, and other devices with an external 10MHz reference source input.
- 【Voltage Adjustment】: It is the use of GPS 1PPS signal, microcontroller comparison, through the microcontroller output 16bit PWM to control the isothermal crystal output accuracy, isothermal crystal frequency fine-turning voltage is 0 to 5V, then the 1bit PWM can control the output voltage is 0.000076V.
- 【Strong Durability】: Fine workmanship, it adopts premium housing and quality electronic parts, with accuracy process, which ensures fine durability and long service time.
- 【High Accuracy & High Stability】: (Global Positioning System Disciplined Oscillator), also known as GPS Tamed constant temperature crystal oscillator, GPS-tamed clock, and 10MHz standard signal source. Compared to the general time base, it has higher accuracy and more stable output.
- 【Easy to Use & Multifunctional Interfaces】: The front panel features a display screen and encoder, and the back panel features a 10MHz output interface, 1PPS output interface, GPS antenna interface, power switch, and 12VDC power interface.
9.0Excellent
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9
Springer20% OffThe Navstar Global Positioning System
8.9Very Good
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10
Cambridge University PressAlgorithms for Global Positioning
8.7Very Good
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