The coaxial cable in between is RG-58C type, which is a widely used coax variety with a black, non-contaminating PVC jacket for additional physical protection.
This RG-58C, SMA (Male) to SMA (Male) coax cable assembly by Remington Industries is ideal for general 50 Ω impedance signal transmission applications..RG-58C Coaxial Cable Assembly w/SMA (Male) to SMA (Male) Connectors, 50 Ohm Impedance, 6 ft Length These include many military & civil radio frequency (RF) operations such as cable television (CATV/MATV), telecommunications, WiFi/network antennas, laboratory benches, and ham/CB/other radio setups, as well as any other signal transfer applications in fields such as aerospace, scientific, and medical. Attached to each end of the assembly is a male SMA plug with a nickel-plated brass body and a gold-plated contact.