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REDOR Box
Our REDOR Box splits a single X-channel (e.g. of a Bruker H—X MAS probe) into a double-resonance circuit to enable X—Y Rotational Echo Double Resonance (REDOR) and similiar NMR experiments.
Options:
- Large REDOR Box: fields of 200 - 600 MHz
- Small REDOR Box: fields of 700 - 900 MHz
Specifications:
- Up to 1000 W RF pulse power (50 μs)
- VSWR < 1.2
- Frequency splitting 1 - 20 MHz, e.g. 13C/23Na, 13C/27Al
- Larger frequency splitting is subject to discussion
- Suitable for Bruker 4.0 and 3.2 mm H—X(—Y) MAS probes (X channel)
- Suitable for DNP experiments
- Suitability for other MAS rotor/probe sizes is subject to discussion
- The box is not suited for the 1H/19F channel
- The H channel can be used with the REDOR Box attached to X
- The Y channel can still be used with the REDOR Box attached to X
- Simple installation/mounting directly at the probe
- N-type connectors
- Efficiency of up to 80% compared to single resonance probe
Transcoupler
Passive transcoupler modules (duplexer/transmit-receive switch)
- Custom-made passive transcoupler module
- RF power 1 - 1000 W
- VSWR < 1.2
- Low-frequency range: 0.45 - 0.75, 0.7 - 1.0, 1.0 - 2.0, and 2.0 - 3.0 MHz
- Mid- and high-frequency range: 3 - 5, 5 - 9, 9 - 14, 14 - 30, 30 - 50, 50 - 80, 80 - 150, 150 - 250, 250 - 350, 350 - 450, 450 - 550, 550 - 650, and 650 - 850 MHz
Transcoupler high-power
Passive transcoupler modules for high-power applications
- Custom-made passive transcoupler modules with active cooling system
- Suitable for high-power and high duty-cycle applications including ultrasound measurements; prototype development with Prof. Steinmeyer (Nürnberg, DE)
- RF power: 1+ kW
- VSWR < 1.2
- Low-, mid-, and high-frequency ranges as outlined above
Preamplifier 0.7 - 150 MHz
- Input frequency: 0.7 – 150 MHz
- Max. input peak power: 30 dBm (20 Vpp / 1 W)
- Noise figure: ≤ 1.3 dB
- Signal amplification (gain): +35 dB (min.)
- Recovery time: ≤ 9 μs (after 1 μs 30 dBm pulse)
- Input / output impedance: 50 Ω nominal
- Input / output VSWR: ≤ 1.4
- Requires +12 (or max. +15) V (DC) power supply
- Option: customised external power supply
- Dimensions: 140 × 55 × 32 mm (L × W × H)
- Temperature: 0 to 50°C
- Humidity: Max. 95% not condensing
Alternatives/options include fixed frequency modules between 1 and 400 MHz;
contact us for options.
Preamplifier 20 - 1200 MHz
- Input Frequency: 20 – 1200 MHz
- Max. Input Peak Power: 30 dBm (20 Vpp) 1 W
- Noise figure: ≤ 1.5 dB
- Signal amplification (gain): +20 dB
- Recovery time: < 1.6 μs (after 1μs 30 dBm pulse)
- Input impedance: 50 Ω nominal
- Input / output VSWR: ≤ 3.0
- Requires +12 - 14 V (DC) power supply
- Option: customised external power supply
- Dimensions: 140 × 55 × 32 mm (L × W × H)
- Temperature: 0 to 50°C
- Humidity: Max. 95% not condensing
Alternatives/options include fixed frequency modules between 1 and 400 MHz;
contact us for options.
Ultra low-noise power supply
Ultra low-noise DC power supply for preamplifiers or other applications
- Input: Typical AC power
- Compatible with frequencies/voltages from all countries
- DC output: 12V. Contact us for other options
- AC noise: RMS < 0.5 mV
- Temperature: 0 to 50°C
- Humidity: Max. 95% not condensing
MAS accessories
Our various MAS accessories include:
- Stators Bruker DVT type 2.5, 3.2, 4.0, or 7.0 mm made of Vespel
- Stators Phoenix NMR/Varian pencil type of any dimension
- MAS rotors for 2.5, 3.2, 4.0, and 7.0 mm (Bruker/Cortecnet)
- Spin speed detection modules
- MAS stator/rotor test stand
- Rotor cap/bottom remover tool (Bruker 2.5, 3.2, 4.0, and 7.0 mm)
- Rotor cap/bottom assembly tool (Bruker 2.5, 3.2, 4.0, and 7.0 mm)
Watch this space for your customised solution - contact us.