Original article from: Wayne Sarosi 
 Reposted by Rob Dennis,Moderator HAM_TECH,for use of the FIDO HAM_TECH echo.
  THIS POST/SERIES NOT TO BE USED IN ANY CDROM COMPILATIONS FOR COMMERCIAL
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SUBJECT: Wire antennas- part 7
INVERTED VEE
 This antenna is basically a half wave dipole with each leg sloped down at a
45 degree angle from the horizontal,180 degrees apart.
                        X  feed point
                      / | \
                    /   |   \
                  /     |     \  element leg
                /       |       \
              /         |         \
                        |
                        -  tower or mast
              ----------X----------   Top view
 The overall length of the Inverted Vee is slightly longer than the standard
wire dipole. For 10m,the length is only 2 inches longer.
 This antenna can be fed directly with 50 or 75 ohm coax,but it is suggested
that a 1:1 BALUN be used. The tips of the Inverted V should be kept well off
the ground as the RF voltage levels are high at the ends.
 This is more of a protection for young ones playing around the area.
 If you recall the formula c=sqrt(a^2 + b^2) and insert the length of the
element leg for c.  Use the fact that a = b because of the 45 degree angles
between the mast and the element leg and the angle between the element leg 
nd
the horizontal,this will equate to:
              c = sqrt(2a^2) => a = sqrt(0.5c^2)
 This will give you the value of a which is the height of the mast at the
horizontal line to the end of the element leg. Add eight feet for protection
from the high RF voltage levels and you have the height of the mast required
to support your Inverted Vee antenna.
    EX:  40m Inverted Vee; 66'2" @ 7.15 MHz
         (66'2")/2 = 33'1"
         c=33'1" => 33.0833 decimal
         a = sqrt(0.5c^2) = 23.39345 => + 8 = 31.39345 => 31'4.75"
 Thus the mast height is 31' 4.75" to support a 40m Inverted V,minimum.
 The Inverted V is basically omni although the pattern is not quite but close
enough. The gain is basically unity over a good ground.
 It is an inexpensive antenna to build and performs very well on all HF/MF
bands.
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BEVERAGE ANTENNA:
 This is also a basic wire antenna of which is one wave length or longer.
 Normal designs are one wave and this must be kept in mind when placing one 
n
the property.  Once installed the direction is fixed.
 The beverage antenna has a low angle of propagation which makes it excellent
for the lower bands (30m,40m,75/80m,& 160m).
              -------------------------------
          __  |                             |
     Rx     }|{                             Zo
          __}|{                             |
              |                             G & radials
              G
 The Beverage is inefficient as a transmitting antenna and it is suggested
that it be used as a receiving antenna only.
 The pattern of the beverage is similar to a good yagi.
 Formulas and specifics for this antenna can be found in the ARRL antenna
handbook.
-WS
--- GoldED 2.42.G1219
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