If you are grounding your antennas and coax and your station to the ground rod at the entrance panel for your service, this is actually how it is to be done.
At your station, mount a common buss bar (any strip of 1/8" copper will do or even a grounding buss bar from your local home depot etc.) and run separate grounding cables from your equipment to this buss bar with the lengths as short as possible with a little slack in them so that you can still move your equipment around for cleaning or attaching your coax.
From the copper strip or buss bar, run a #6 or #4 copper ground line to the outside using the shortest route just outside your station. At the end of this, attach it to an 8 foot ground rod. From this new ground rod, tie it in to the ground rod at the service panel entrance ground rod using the same size or larger ground wire that you ran out of your station. If the distance is longer than 16 feet, try to add another ground rod at least every 16 feet or as close as possible. (If you are 14 - 15 feet, this is ok. More is better but not closer to each other than 12 feet. If you are 18 - 20 feet, not so good unless the total run is this length. They may need to be closer if the soil is a poor ground type.) At the 90 degree turns, just carry it out away from the house in a wide sweeping turn. (Not less than 18" radius, preferably at least a 3 foot radius.)
Now, back to the area where you brought out the new ground wire from your station and the first new ground rod. On the house or a post very close to the house, mount an outdoor type electrical box (bought from the home depot, lowes, whatever store is in your area) and mount it about 1 foot above ground. In this box, mount a piece of copper plate at the back side of this box on a piece of 3/4" plywood. Now on this plate, mount another buss bar similar to what you mounted inside your station for your equipment. From the buss bar to the ground rod that is right below your mounted box, or very close, connect another ground #6 or #4 wire. Run all of your coax and control wires etc. into this box from your antennas and towers or any equipment that you intend to mount outside. In the box, you attach all of these leads to the appropriate type of grounding connector. (Coax polyphasers, static bleeds, polyphasers for the control wires for a rotator, etc.) The grounding connectors are mounted directly to the copper back panel that you installed in the back of the box. Then you connect your jumper leads from these grounding connectors and run them inside to your station.
There are also bushings that you can put around your coax and other cables going into and out of the box to help keep it weatherproof for the most part.
This is about the way I did mine after much reading and trying to follow the national electrical codes.
A few good reads but lengthy: All are great references. The first 3 - 4 will give you the basic explanation and the rest will help you to understand more, but VERY long reading.http://www.w8ji.com/station_ground.htmhttp://www.w8ji.com/house_ground_layouts.htmhttp://www.scribd.com/doc/14868226/lightning-protectiontaming-thors-thunderon-a-budgethttp://www.ve3sqb.com/hamaerials/kf6gdj/
(Go down to the grounding section) http://k9sth.com/Page_2.htmlhttp://www.arrl.org/groundinghttp://members.rennlist.org/warren/LightningProtectionAndGrounding.pdfhttp://fyi.uwex.edu/mrec/files/2011/04/W4.-Biesterveld-NEC-grounding-MREC2010.pdf
I could go on, but I have to get back to work. HI HI
Good luck on your station project and maybe we will catch each other on the bands......
Joe / AJ3O