[TowerTalk] J Bolt Specifications

[Ron W8RJL]

I have started digging the hole for installation of a used US Tower MA-40 with MARB Rotor Base. I contacted US Tower for a quote on four 3/4" X 27" anchor bolts but they say that is not a stocked item so lead time is 6 - 8 weeks. 

If I wait 8 weeks to get the bolts then 28 days for the concrete to cure that means 3 months before I can get the 3 element SteppIR in the air. 

Do any of you structual engineer guys out there know what specification J bolt is needed and a good source. Shipping will be to northern California.

I said J Bolt but I know US Tower is now welding two nuts and a washer to the end of the 27 " bolt. Don't know if that is a structual improvemet over a J bolt or just easier to manufacturer.

Ron W8RJL