Thanks I appreciate it and please forgive my very late response. For the last 3 months have been very busy relocating to Oklahoma and starting a new company for my Son. Just now got my desktop hooked back up and on the internet. If it makes you feel better, this is my first post in 3-months. Very common problem, especially problematic with older construction. New construction today brings in all services (CATV, water, gas, telephone, etc...) at the same point which makes things really easy to bond properly and follows best practices. In other words make Single Point Ground very easy to establish. Ideally that is where you the ham operator want to set up shop. Unfortunately we hams screw that up by insisting putting up shop on the other side of the house now making it almost impossible to create a Single Point Ground. It can be done but requires a lot of expense using an Isolation Transformer and AC Power Distribution Panel to create a new Ground Reference Point. So what is a ham operator to do? The answer is quite simple, you have to compromise and accept the fact it will not be ideal. You can make it safe, but still higher risk compared to a SPG. Here is what I mean. In order for current to flow there has to be a Entry point and an Exit point, aka 2 nodes with a Potential Difference (voltage) across the 2 nodes. I bring this up because it should help you and others to understand what a Single Point Ground (SPG) is and how it works. With a SPG, no external fault currents can flow because it has no where to go or exit. Get your noodles wrapped around that, and you are well on your way to understanding what is going on and how to deal with it. So now you have you AC Service on one side of your house, and tower and coaz entry on a different side making it impossible to create a SPG. You have 2-ground rods for the AC service assuming it was built to Code on one side of your house, and some more rods on another side making up your tower and station ground. You now have a BIG PROBLEM on your hands. In a nutshell you are not in compliance with electrical codes. You cannot have two Ground Electrode Systems aka GES. Good way to get yourself killed and burn up your equipment and home. You created 2 NODES for lightning current to flow through. Have you figured out what is connecting the 2 NODES, or bringing them into close proximity for a FLASH OVER. Your radio, DC Power Supply, widgets, gadgets, gizmos, whizbangs. bells and whistles like a desktop or laptop all use power and interconnected. That power comes from your AC Service. In the Branch Circuit (wall receptacle) there are two wires connected to the AC Service Ground; A white colored conductor called Grounded Circuit Conductor aka Neutral, and a green wire called Equipment Ground. Those two wires, especially the green ground wire are bonding the two Ground Rod System together and asking for big trouble. If lightning were to hit your tower or AC service, the fault current will split into two directions, One to earth, and through your hose wiring to the other ground on the other side to the other ground it sees. Bang you let the magic smoke out of your equipment, and burn up your house wiring. God forbid you are there, get in the path, and BANG you let your magic smoke out and meet your maker. Understand the problem now? This is where code saves your skin. Thou Shall Not have two GES. Thou Shall Bond All Electrodes Together to Form a COMMOM GES. This does not make a SPG, it is a compromise. At a minimum you would run a bare, solid, tinned #6 AWG as you proposed to make that bond. Even better make a Ground Ring like a data center or communication facility would use. What that does is creates a SHUNT which takes the lion's share of current around you and away from your home and equipment. It will NOT Shunt all the current, there will still be some current flowing through your equipment and wiring in the event of a fault. However the impedance of the Shunt will be much lower than the impedance of your equipment and house wiring keeping fault current flowing through your equipment to tolerable levels most of the time. Not ideal, it is a compromise.