HPQ, the chassis ground stud on equipment is there for connecting a common shack ground to all equipment to bring them to the same level. no circulating currents, RF hot here and not there, etc. if you check out the NEC electrical code, it commands that all transmitting equipment be enclosed in a metal case and grounded.
typically you'd like to run that common equipment ground to the RF system ground rods. theoretically, well-grounded antenna runs with coax to the rigs would serve. practically, you want the lowest impedance to static, lightning induction from near strikes, etc. because, circulating currents. so a nice stout wire,#8 copper being the code minimum, short and straight as possible, would be better.
if you have older equipment with 3-wire cords to internal power supplies, you have a circulating current through the electrical feed. code says it should all be bonded to the ground buss at the power entrance panel. if it isn't, you have circulating current. possible RF hot spots. likely no fun with a near-strike in a storm.
"ground" means different things in different circumstances. that's why the ARRL grounding book. "ground" is a shortcut for not saying "electrical safety ground and return," "RF ground for counterpoise," and "system common ground." which is too much shortcut.
Thanks for all the suggestions. To answer an early responder, I have an antenna ground. I'm looking for (I guess) an RF ground. Something to connect to the terminals on the back of all my equipment designated as "GND". Sorry if that is the incorrect name.