The RF Nomad is a unique eurorack module is a voltage-controlled sideband shortwave receiver. As described on Evaton's site - "it's been designed to be extra noisy, extra squealy, extra gritty, and just downright nasty. No built-in output filtering means that a rich spectrum of harmonic content is available on the audio output jack. Audio levels can be driven to distortion. CV control lets you add your own creative spin on sound design.". The tuning is voltage controlled, which adds to the creative factor in sound design.
This is a pre-owned module and does NOT include an antenna, which is mostly needed to get the best radio reception. You can get one for $12 at Perfect Circuit here: https://www.perfectcircuit.com/evaton-long-antenna-for-rf-nomad.html
the full description and specs can be found on this page: https://www.evatontechnologies.com/products/rf_nomad.php