e-Callisto
MEXICO-FCFM-UNACH

e-Callisto
International Network of Solar Radio Spectrometers, a Space Weather Instrument Array

The Callisto solar spectrometer is a programmable heterodyne receiver designed in 2006 by Christian Monstein, a member of the Radio Astronomy Group at ETH Zurich, Switzerland. Several Callisto receivers are installed worldwide and are part of the e-Callisto network. You can access the data for the entire network here

The Callisto MEXICO-FCFM-UNACH station is located at the facilities of the Faculty of Physical and Mathematical Sciences of the Autonomous University of Chiapas (FCFM/UNACH) and has been observing since 2024. It is configured to monitor the 45-90 MHz band, at 200 frequencies, four times per second. It uses an LWA crossed dipole antenna. It also has a power coupler with a quadrature (LWAPC-Q) that feeds the crossed dipole antenna's active balun array through the coaxial transmission lines. The LWAPC-Q has two identical RF circuits and is inserted between the antenna array and the receivers. This allows for discrimination of circular polarizations received by linearly polarized crossed dipoles.

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