I am building an out building ham shack. I am planning to install an 8 foot ground rod for the antenna. Does the radio require an additional ground to the rod as well or do I need to install a lightning arrestor between the radio and the antenna coax?
I will explain lightning before giving my answer.
Lighting takes the path of least resistance, it dont matter whats it is. Lighting is a hammer, everything is a nail.
Your antenna is prime real estate for its path.
A. Its metal and it covers a good deal of surface area.
B. Its the quickest path to the ground.
So my answer is this:
Yes install the lighting arrestor but at the same time protect your equipment with additional measures like lighting rods that provides a straight forward path to the ground thats not your atenna It is better to be safe than sorry.
Because, lighting can hit that antenna and fry $$$$$ worth of equipment.