Results on radio attenuation length recorded in a Romanian salt mine

Abstract

We measured the transmission of radio signals through salt in the 'Unirea' salt mine (Slanic Prahova, Romania) at a depth of 208 m, in 3 frequency bands: around 200 MHz, 400 MHz and 800 MHz. We concluded that the higher ones are not suitable for radio detection of cosmic neutrinos. Estimates about the comparative radiowave attenuation after 10 m of propagation, to 100 m were made, at 200 MHz.