[TowerTalk] TowerTalk] Installation manual MA-40

[Ron W8RJL]

> Thanks to all that responded. Problem is the links provided show base for 
> a
> MA-40 attached to a structure at the eave. That installation uses just 2 
> bolts sticking out of the concrete. For a free standing MA-40 with the 
> MARB (rotor at bottom) installation looks like I need to use the data for 
> a MA-55 but stay with the 4 anchor bolts 3/4" by 27" and a hole 3' x 3' x 
> 6' deep and a good rebar cage. The MA-55 uses 1" anchor bolts but my base 
> has 4 bolt holes for 3/4" anchor bolts. Comments welcome.
> I'll document this project which is in the hills south of San Jose, CA.
> 73
> Ron W8RJL
>
> ----- Original Message ----- 
> From: "Jon Zaimes" <jz73 at verizon.net>
> To: "'Ron W8RJL'" <youngron at verizon.net>; "'Tower and HF antenna 
> construction topics.'" <towertalk at contesting.com>
> Sent: Thursday, January 17, 2019 5:35 AM
> Subject: RE: [TowerTalk] Installation manual MA-40
>
>
>> Ron,
>>
>> Found this on US Tower website. I think it has the specs you want:
>>
>> http://www.ustower.com/wp-content/uploads/2017/01/MA40.pdf
>>
>> I installed a new MA40 a year or so ago (for a client) on an older MA40
>> base, and discovered the new base plate was a slightly different size (a 
>> wee
>> bit larger in one dimension as I recall) and I had to chisel some 
>> concrete
>> away to make it work. Not sure but the hole spacing or size may have been
>> slightly different too, requiring "field modification." So you may not 
>> want
>> to trust the manual specs till you have your parts in hand.
>>
>> 73/Jon
>>
>> Jon P. Zaimes, AA1K
>> Tower climber for hire
>> http://www.aa1k.us/
>> Cell: 302-632-2353
>>
>> Reviews of AA1K tower work on eham website:
>> http://www.eham.net/reviews/detail/12922
>>
>> Hug your favorite tower every day, and always stay connected to it.
>>
>> -----Original Message-----
>> From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Ron W8RJL
>> Sent: Thursday, January 17, 2019 2:13 AM
>> To: Tower and HF antenna construction topics. <towertalk at contesting.com>
>> Subject: [TowerTalk] Installation manual MA-40
>>
>> Does anyone have a link for a installation manual for a US Tower MA-40,
>> MAF-40, MARB-40. I've requested a quote for J bolts and manual from US 
>> Tower
>> but not sure how long that will take.
>>
>> Looking for hole size, J bolt specs and cage/rebar info.
>>
>> Thanks,
>> Ron W8RJL
>>
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>