ptFlex with DRA, Assembled

ptFlex assembled with DRA818V transmitter.
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ptflex-drab (Custom)
ptflex-drac (Custom)
ptflex-drad (Custom)

The ptFlex is a second-generation APRS tracking system, designed for high altitude ballooning, and other applications where size, power considerations, and interoperability is important.  The ptFlex with DRA includes a 500mW transmitter module frequency agile across the entire 2m band.

Included with the ptFlex:

  • Integrated UBlox GPS module and antenna
  • BMP-180 temperature sensor and barometric pressure sensor
  • 500mW transmitter module, frequency agile from 144.000MHz to 148.000MHz.
  • Battery voltage sensing
  • Piezo element for audio annunciation
  • Qwiic connector to interface with other I2C sensors.

There are only a few extra components needed to put the tracking system on the air.  These are:

  • 5V TTL-level serial cable for configuring the settings
  • ptConfiguration tool (a free download)
  • A battery pack with a 2.1mm barrel connector capable of 7-12VDC (a two-cell Lipo battery works perfectly)
  • An antenna tuned to operate at in the 2 meter band.

For more information about the ArduinoTrack system, see the Project: Traveler project page and read the ArduinoTrack Instruction Manual.

Note: A valid amateur radio (Ham) radio licensed is required for operation of this tracker.

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