[TowerTalk] Shack ground

[Paul Christensen]

>K7DD is right. Bond to your SPG with as big a wire as you feel you can
>afford.

Just finished reading the grounding article in the July issue of QST.  I'm 
surprised more use is not made of double-bolted lugs for master ground 
busses and radial plates.  Many commercial copper MGBs use standard paired 
hole spacing to allow for double-bolt lugs.  I've not see this with any ham 
product, including copper buss bars and ground radial plates.

The benefit of the double bolt is that it cannot accidentally spin from 
lateral wire pressure - and work itself loose.  Often, large rigid grounding 
cables and strap are connected to these points and it does not take much 
leveraged pressure from a point at some distance from the bolted connection 
to spin the bolt.   When I do add a station MGB, I'll make sure it 
accommodates these bolts, even if I have to drill out an extra set.

Paul, W9AC