We are just about finished wiring CAT6 cable all over our house. We also plan to upgrade to 400 Mb/s internet speed from our ISP. We currently get 200 Mb/s from our ISP, and I have seen as much as 230 Mb/s from an internet speed test using our old CAT5e cable (so its proven our coax cable can handle at least that much).
Will we even be able to take advantage of these faster speeds (400 Mb now, maybe even 1 Gb in the future) with coaxial cable that is 50 years old?
Other info: I have read that the length of coaxial cable can affect the speeds... I estimate there is about 50 ft of this 50 year old coax cable. I could not find any print on this old cable saying what type it is. It leads into about another 45 ft of RG-6 coaxial cable (I'm assuming the RG-6 would not create any bottlenecks).