[Elecraft] Slopers, Fiberglass Masts, Metal Masts, etc.

Bill Tippett btippett at alum.mit.edu
Sat May 15 07:05:22 EDT 2004


Hi Sandy,

W5TVW wrote:
 >For those who
go to places where there isn't any trees to hang wire antennas on........
Consider the MFJ telescopic 33' fibreglass mast!  Will solve a lot of problems
with where to put antenna wires in the field!

         Also check The Mast Company just introduced a family of fiberglass 
masts
(bottom of page 47 June QST or the following website):

http://www.tmastco.com/TelepolePage.htm

At $115 it is more expensive than the $80 MFJ-1910, but it could be worth it
since it is ~6 pounds versus ~3.3 pounds and may be stronger than MFJ's:

http://www.mfjenterprises.com/products.php?prodid=MFJ-1910

The Mast Company also has stackable aluminum and fiberglass tubes which are
heavier and require guying hardware beyond the basic tubes:

http://www.tmastco.com/

 >"inverted vee" support for you dipole fiends, and "sloper" wire support 
for us
"random wire" people, and a 33' vertical wire support (hookup wire wrapped
around mast) for the vertical antenna crowd.

         A 1/4 wave sloper will probably NOT work with only a mast for 
support.
These require a counterpoise above them which is why they are normally mounted
below a Yagi or other antennas.  Even people who try these on an otherwise
bare metal tower find that they need something above them to work properly.

                                                 73,  Bill W4ZV 


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