OTA Antenna Grounding question

[mechaley]

If I mount an OTA antenna to a metal vent pipe on my roof, do I need a ground? I assume a vent pipe is grounded.

I guess I could verify with a DVM and the ground on an AC outlet.

 

[Ilya]

I hope some installers can comment on this. My understanding is that you need to ground it separately.

 

[TYORK]

If I mount an OTA antenna to a metal vent pipe on my roof, do I need a ground? I assume a vent pipe is grounded.

I guess I could verify with a DVM and the ground on an AC outlet.

still should be ground separately