Seems like it was quad shield, swept to 3GHZ RG6 with the connectors also rated to pass 3 GHZ.
I THINK there were "approved" manufacturers numbers in the FSB's but those are getting hard to find these days
I too would like to see some hard specs listed to use as a cross check.
Pure copper from FSB's over the years.
Hard to see them cutting specs as frequencies rise and trans and rcv are now multiplexed on the same conductor.