I have recently moved my antenna far away from my house (where the Pi and tuner dongles are), so I have used 150’ (46 m) of pre-terminated RG6 cable with two change-over connectors (SMA to F) and one preamp at the antenna. I was a little greedy with the length, I have some extra loops in the attic, but is better than the alternative.
Results are great even with that long cable, mainly because I am compensating the cable loss by raising the signal at the antenna.
