This dataset contains an RF recording of the n78 band 5G NR cell for Movistar at 3.55 GHz. The recording was done at Gaia laboratory, ANTS research group, Universidad de Murcia, using equipment kindly provided by the research group. A USRP N310 was used to sample 2 channels at 122.88 Msps. These were recorded to RAM using an application based on the UHD rx_samples_to_file example. Each of the 2 channels was connected to an outdoor LPB-7-27-NJ Panorama omnidirectional vertically polarized antenna. The USRP N310 used its internal frequency reference. Timestamping of the IQ data was done by synchronizing the USRP FPGA clock to the PC clock, which was set by NTP. An external 1PPS input for time synchronization was not used. The two-channel recording is formatted as a SigMF collection. See the blog post "n78 band 5G recordings" by the first author for more information.