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
 SALE WITHOUT EXPRESS WRITTEN PERMISSION OF ORIGINAL AUTHOR(S) OF THIS POST.
               ALL AND ANY COPYRIGHTS RETAINED BY AUTHOR(S).
SUBJECT: Wire antennas- part 8
Sloping Vee:
 The Sloping Vee is basically an Inverted Vee in an equilateral triangle
configuration at a 45 degree angle to the vertical mast.
 Not as wideband as the inverted vee and also not omni as the antenna shows
characteristics towards the sloping elements. Basically unity + in gain.
 Can be fed with a 50 ohm coax but a 1:1 BALUN is recommended.
 Element lengths are similar to the Inverted Vee design.
 This antenna is good for AROs with limited space and stay within a specified
area of a band. With a tuner the antenna will cover a wider range but will be
less effective.
 Remember that the same hold true for the Sloping Vee as the Inverted Vee;
keep the ends high enough off the ground so that children and adults can not
touch them.
-----------
Terminated Longwires:
 Similar to the Longwire, the terminated longwire is usually shorter and
terminated with the characteristic impeadance of the antenna.
 The terminating resistor should be able to handle at least half the intended
power levels of the transceiver.
 This terminating resistor between 500 to 700 ohms when the antenna is 20 - 
0
feet above ground.
 Similar results can be obtained from the terminated longwire as with the
Longwire as far as antenna patterns, directivity, etc.
------------
Marconi Antenna:
 The Marconi is a 1/4 wave antenna bent over to be parallel with the ground.
 This model works similar to the Folded Marconi except...this antenna 
equires
a series LC circuit with the feed line connected to the inductor as a tap.
 Let'see how the ascii graphics can handle this....
              ---------------------------------------
            /
          /               Length = 125 for 160m
        /
      /
     |
     = tunable cap  700pF
     |
     }<---0-coax
     } L  |      L = 13 uH
     |----|
     X gound plane
    Well not too bad.
    Check out Orr & Cowan for the details.
------------------
Sloper:
 This antenna is great for `El Cheapo' antenna builders or the poor guy with
no room. The antenna consists of a 1/4 wave componet sloping down 45 degrees
from the peak of the support and a grounding lead parallel to the support.
 The support itself can be used for the downlead provided it can conduct.
 The second form of the sloper is a dipole suspended 45 degrees down from the
peak of the support.
 In either case,the antenna is directive and the directivity is as such:
                        |\ feed point
                        |  \  sloper
                        |    \
                        |      \    ---------> direction of wave
                        |        \
                        |          \
                        |            \
                        |              \
                        |               |
                        | mast          | wooden support
                    ----------------------------------------- ground
 If you use a tree for the mast,be sure to clear the branches before the
sloper actually starts.
 This is the feed point and your down lead for the ground starts here also.
 If you look at it,it's nothing more than a dipole with a vertical ground
element and a sloping radiator.
--------------------
 In wire antennas part 9 and 10 I will be discussing some of my own designs
and results.
-WS
--- GoldED 2.42.G1219
---------------