To bond a grounding wire to the antenna mast you can use either a ground strap or pipe clamp.
Grounding antenna in attic.
An alternative is a pipe clamp which is heavy duty and made of steel with serrated adapters.
The mounting rod is insulated from any of the active reception parts.
It might not but there is going to be a whole bunch of electrical wiring in the attic as well for the lightning to follow.
Most people use a galvanized steel ground strap such as this one.
From your description it sounds as if you may create a ground loop which may cause problems throughout the house.
The layer of plywood would tend to block those.
Clearstream 4v hdtv antenna.
There are very specific requirements for grounding an antenna both via mast ground and a shield ground.
Here are some photos of my roof top antenna with a grounding wire in the attic.
This antenna has all the reception power of an outdoor antenna but features a curved metal frame of reflectors that are designed for fitting easily into smaller attic spaces.
The copper wire at the base of the antenna mast attaches to the copper vent tube that runs to the roof through the attic in a 55 year old house.
An example is the 90628 ground pipe clamp by morris products.
The coax cable itself can build up a static electric charge and in order to properly dissipate that charge an antenna discharge unit or grounding block can be used again check you local code rules.
Now it s time to ground your tv antenna s coax cable.
Grounding a tv antenna isn t just for safety.
Exterior antennas must have their mounting rod grounded to provide electric discharge in the event of a lightning strike or static accumulation from other causes.
The ge 33692 attic mount hd antenna is a notable example of an antenna specially designed for placement in the attic.
Step 4 how to ground your coax cable.
It eliminates noise caused by static discharges from the antenna through the receiver.