  We use the formerly derived explicit analytical expressions for the
conductivity of nanostructured superconductors supercooled below the critical
temperature in electric field. Computer simulations reveal that the negative
differential conductivity region of the current-voltage characteristic leads to
excitation of electric oscillations. We simulate a circuit with distributed
elements as a first step to obtain gigahertz oscillations. This gives a hint
that a hybrid device of nanostructured superconductors will work in terahertz
frequencies. If the projected setup is successful, we consider the possibility
for it to be put in a nanosatellite (such as a CubeSat). A study of high
temperature superconductor layers in space vacuum and radiation would be an
important technological task. The interface thermal boundary resistance is
taken into account in the numerical illustrations for the work of the device.
