[Antennas] Delta Loop Question

[Merv Stump]

Full-wave loops are very forgiving. You can feed it anywhere on the loop
and it will work and work well.  In addition you can make it basically
any shape you want - triangle, square, rectangle (so long as it is not
too narrow).  The impedance will vary somewhat depending on all these
factors plus the environmentals but in general at resonance it will be
close enough to 100 ohms that if you feed through a 1/4 wave section of
75 ohm coax you can use it without a tuner.  

Your idea of one vertically mounted and one horizontal is right on.  I
once did this on 75 meters and found that within about 500 miles the
horizontal loop was approximately 10 db better.  Into Europe and further
out the vertical loop was generally 10 db better.  

Good luck,  Merv - W2OE