Kea NMR and MRI Spectrometer Consoles

//Kea NMR and MRI Spectrometer Consoles
  • Kea NMR and MRI Spectrometer Consoles

Kea NMR and MRI Spectrometer Consoles

Kea 1 to 100 MHz NMR Spectrometer

Powerful, but still compact and portable, Magritek’s new generation of Kea NMR spectrometer, the Kea2,  significantly improves performance and extends the frequency range of our signature NMR spectrometer line.

With a footprint of 36 cm x 23 cm (12″ x 8″) by only 15 cm (5″) high, the Kea2 conserves lab space. Weighing less than 5 kg (11 lbs), it is easily moved and operated in almost any environment.


Product Description


  • Compact and lightweight
  • Models from 1 to 100 MHz
  • Optional second transmit channel
  • Optional high stability oven controlled oscillator
  • Optional four channel imaging module
  • External input trigger
  • Can operate off a 24 V battery


The extended operating range and features of the Kea2 series makes it useful for a wide range of applications:

  • Spectroscopy, time domain relaxation and imaging
  • Mobile permanent magnets
  • Single-sided NMR

Kea Features

The new Kea2 series NMR spectrometer is ideal for a broad range of NMR systems; from very low field permanent magnet systems to high frequency superconducting systems.

Main Features 1 to 100 MHz


  • A modular design, with several optional modules such as an internal amplifier and a four channel gradient driver module
  • Optional second channel
  • High stability oven controlled oscillatortelsa
  • Available as a standalone or OEM product
  • Experiment design and data processing can be combined into a single button click with the included Prospa programmable macro language and programming environment
  • Small and lightweight: perfect for portable applications, or where laboratory
  • space is at a premium

Pulse Programming

Users can create their own pulse sequences with Prospa’s straightforward, Matlab-like language.

 High Stability Oscillator (Optional)

The Kea2 has an optional oven-controlled oscillator to ensure a frequency stability of better than 1 ppb/ºC. This high stability is often needed for high frequency operation on superconducting magnets.





Four Channel Gradient Driver Module (Optional)

Together with the Kea2 and the standard Prospa software package, the gradient driver module makes for a complete and powerful MRI imaging system.

Second Transmit Channel (Optional)



An optional second transmit channel allows synchronized cross-polarization experiments and measurements. Note that there is only a single receive channel.





Kea Specifications

System Core / DSP Control Module:

  • Interface: Full speed USB 2.0
  • Pulse program timing resolution: 100 ns
  • Waveform memory: 256 k (128 k waveform, 128 k data) 24-bit samples.
  • User interface: Prospa software
  • I/O: 8 TTL outputs, 1 TTL input

Digital Receiver:

  • Input impedance: 50 Ω
  • Sample rate: 100 MHz
  • Resolution: 16-bit
  • Input bandwidth: 50 MHz
  • Digital filtering: programmable.

Digital Transmitter:

  • DDS output level: 0 dBm
  • Transmitter output power: 1 mW
  • Output impedance: 50 Ω
  • Clock rate: 1 GHz
  • Frequency stability: 1 ppm/C standard, or <1 ppb/C with optional oven controlled oscillator
  • Modulation capabilities: frequency, phase and amplitude modulation.
  • Maximum update rate: 2 MHz

Receiver Amplifier:

  • Operating range: 1 to 100 MHz
  • Gain: -20 to +70 dB, digitally controlled in 3 dB steps (0 to 60 dB for low frequency Kea).
  • Input/output impedance: 50 Ω
  • Analog filter: 50 MHz blocks

Preamp Duplexer (Optional):

  • Preamplifier gain: 37 dB
  • Preamplifier noise figure: < 1.5 dB
  • Dead time < 10 microseconds

Transmitter Amplifier (Optional):

  • Transmitter output power: 100 W to 50 MHz, 30 W to 100 MHz

Imaging Module (Optional):

  • Number of channels: 4
  • Maximum output voltage: +/- 10 V
  • Digital resolution: 16 bits

Power Supply:

  • Voltage: 24 V DC
  • Current: 2.5 A DC


  • Size: 360 x 230 x 150 mm
    • Weight: 5 kg (11 lb)


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