Keo Scientific’s KeoRio Multi-Channel RIOMETER couples a simple temperature-stabilized RF front-end with an SDR-based sampler. This configuration reduces gain fluctuations and instability to negligible levels, even for fine-structure absorption studies. Our riometer is agile and robust, meeting all the requirements of radio-based ionospheric science in the noisy modern world.
Many years in the making, Keo Scientific’s riometer may be considered a ‘next-generation’ riometer. Our unique approach means that new features can be implemented entirely as software updates that can be installed remotely, a benefit not enjoyed by traditional analog riometers.
Our Linux-based SDR riometer can be reconfigured through software updates.
The RF front-end provides only enough gain to drive our SDR-sampler and is temperature stabilized, both of which reduce inherent gain fluctuations and reduce instability to negligible levels.
The Riometer uses a Modified Long Wavelength Array (LWA) Active Crossed-Dipole Antenna
| KeoRio | |
| Sky Channels | 2 |
| Operating Frequency | 25-45 MHz (user tunable) |
| Receiver Bandwidth | 20-250 kHz (user tunable) |
| Filter | 24-46 MHz |
| Repeatability | 1% over 24hr |
| Dynamic Range | 60 dB or better |
| Noise Figure | ~2.7 dB |
| IIP3 | -1.8 dBm |
| Cable Length | 100 ft direct bury
(300 ft direct bury also available) |
| Controller Interfaces | Ethernet, HDMI, Mini-DP, USB |
| Dimensions (L x W x H) | 44 x 48 x 8 cm |
| Weight (Rackmount Controller) | 3 kg |