I found this while seaching on ham verticals:
http://www.s9antennas.com/accessories.html
This will probably work if you are using T6061 wires for the radials but what about copper? Copper attached to aluminum is a disaster waiting to happen in terms of corrosion and bad connections.
Guess when they say "high conductivity aluminum" that they missed that copper has higher conductivity than aluminum. At least they didn't say "higher conductivity".
Just get some #12 or bigger copper wire, form a ring, and solder your radials to the ring. Optionally, coat it with a layer or two of clear outdoor or marine grade lacquer. Even without the lacquer, it will be there 20 years from now unlike this design.
Neil
Here is a good ground plate that we show in the Procaster grounding section:
http://www.chezradio.com/proc_ground.htm
This one is made of stainless steel and should last, and their method of running radials without all the digging is a great idea.
Gerry
The fasteners are Stainless Steel. 🙂
Let's imagine this: aluminum plate, copper wire, and stainless steel fasteners. Electrolysis unlimited!
Oh boy! :-))
Neil