It should certainly make a good digital interconnect being true 75 ohm, especially if paired with BNC connectors. As for analogue cable I'm not sure. It would be interesting to try. It seems that with aerial cable the main design consideration seems to be screening to preserve signal quality. Whereas with Hi-Fi cables the main focus seems to me on conductor purity. I guess the reason behind that is that aerial cable is designed to carry delicate low voltage signals. Hi-Fi signals will probably be higher voltage. Although that will depend on where the cable is used in the signal path. Between source and preamp/integrated amp the signal will be around 2-2.5V in non-balanced cables. Between a preamp and power amp the signal will be much lower. So aerial cable might work better in that lower voltage connection than in those with higher voltages. That's just a theory though.
Aerial cable is quite stiff, so it will be trickier to use and most RCA connectors aren't designed to allow coax cable to be terminated to them whilst maintaining a coaxial geometry. Crimped connectors would probably work best but that would limit connector choice.
Source: Apple TV 4K - DAC: Beresford Bushmaster Mk II - Preamp: CI AudioPLC-1 Mk II - Power Amps: Musical Fidelity 550K mono blocks - Speakers: Wharfedale Opus 3 - Cables: Mark Grant etc - Misc: Belkin PF30 mains filters.