In a message dated 98-06-29 03:57:50 EDT, email@example.com writes:
> The questions are:
> 1. Has anyone ever put a 4BA and a EF420/240 on the same tower, if so how
> far apart do they need to be and would the system work ok with a EF180
> between them(Maybe later)?
Rusty, W6OAT, has the same setup and he loves it. Moderate size but big
The factory recommends 9 feet spacing but Rusty has around 7 and it
> 2. I am sure the forces are gunna be tremendous on the mast so what would
> I use for that? Would I have to buy the Chrome molybdenum mast for this?
Tulare County is only a 70 MPH windspeed zone - the lowest they give -
so no big deal for wind speeds.
According to the MARC Program (Mast, Antenna and Rotator Calculator), a
ten foot spacing gives 21,041 in./lbs. of bending moment. You'll need a mast
with 50k psi yield strength and 0.188" wall thickness. MARC is $9.95 + s/h
from Champion Radio Products (www.championradio.com or 888-833-3104).
Cheers, Steve K7LXC
> 3. Would the T2X still turn all of this ok?
> This is still not set in concrete yet so I am still somewhat flexible about
> what happens upon the tower. The tower should have no trouble handling
> whatever I want to put on it. Maybe I will take K6LL's idea and put the
> ferris wheel on it.
> Thanks for the time, and if there are any good ideas out there about what
> might make a better combination please let me know. I realize that I am not
> going to have 30 meters with this arangement so anything that could include
> that might be even better.
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