[TowerTalk] Best way to mount two LPDA on single mast

[n8de at thepoint.net]

Kevin,

How about mounting the top antenna to the mast, then hauling that up  
and dropping it in the top of the tower?  Then ... haul the big LPA to  
the top of the tower and bolt it onto the mast.

I prefer to 'pin' yagis to the mast with bolts through the mast, but  
some mast materials lose too much strength in that location when that  
hole is drilled.

Good luck,

Don
N8DE


Quoting Kevin Shea <fourstar4sale at yahoo.ie>:

> Hi,
>  
> I am putting up an 80' self supporting tower (AN Wireless HDD-80). I  
> will be using 2" chrome moly mast with ~ 10 ft of mast above the top  
> of the tower.  To this mast I am planning on mounting a 7-30Mhz, 14  
> element LPDA and above it approx. at the top (8' separation) a  
> 50-1300 MHz LPDA both from Tennadyne.
>  
> While I have many questions the ones here I am seeking answers for are:
>  
> Should I lift the antennas already mounted on the mast and lower the  
>  entire assembly into the tower and rotator, or should I have the   
> mast already attached to the rotator and lift (by crane) the   
> antennas and mount them to the mast?
>  
> If the second option  is the chosen method how do I attach the upper  
> antenna (I am tall but not ten feet tall)?  Do I need to drill into  
> the mast and place steps into it? 
>  
> Finally, are there any other approaches I should be considering?
>  
> Thanks! 
>
> Kevin N9JKP
> Madison, WI
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