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Powercaster® transmitters provide a reliable source of wireless energy to power, over a distance, devices equipped with Powerharvester® receivers.

The TX91501b Powercaster®Transmitter broadcasts radio waves in the unlicensed 915MHz ISM band for remote power and data. Designed for use with Powerharvester® Receivers, the transmitter and receivers operate as an end-to-end system to wirelessly trickle charge batteries or operate battery-free devices for commercial and industrial applications. The data broadcast can be used for location tracking or authentication of the transmitter or end device. The TX91501b-3W provides power and data at 40-50 feet when using the P2110B Powerharvester® and the directional antenna included in the P2110-EVB kit.

TX91501b User Manual


  • 915 MHz transmitter
  • Direct Sequence Spread Spectrum (DSSS) modulation
  • 1W or 3W Effective Isotropic Radiated Power (EIRP)
  • Fixed data transmission of factory configured ID
  • Integrated 8dBi, directional antenna (60-degree beam pattern)
  • Dual 5V DC power jacks
  • Proximity detection with automatic shut-off
  • No configuration required
  • LED status indicator
  • Dimensions – (6.75″H x 6.25″W x 1.63″D / 17.1cm H x 15.9cm W x 4.1cm D)
  • RoHS compliant
  • FCC (Part 15) and ISED (Canada) certified

Product Benefits

  • Fixed Frequency:  No adjustments needed. Just plug-in to provide power.
  • Small Form Factor: Small, compact and light weight housing enables mounting on a wall or flat surface.
  • Integrated Antenna: High-gain, directional antenna for maximum distance. No external connectors needed
  • LED Status Indicator: Provides visual indication of device status and operation.

Part numbers:

  • TX91501b-3W-ID: 3 watts EIRP output power with transmitter ID broadcast
  • TX91501b-1W-ID: 1 watt EIRP output power with transmitter ID broadcast