I had a dipole and vertical when I lived in the Four Corners and the
vertical was so noisy on receive that it was just about useless but I did
use it on transmit. Farmington is at 5600 ft. elev. and quite dry with dry
rock soil.

Later when I moved to Tulsa where the ground and air are always damp the
vertical was a lot quieter and useable on receive.

Radials do make a noteable differnce, the more radials the better but no on
receive. Lots of noise is vertically polarized and drier air seems to have
more.

--

73
Hank WD5JFR


"ml" wrote in message
...


i was wondering.. ... currently i have a horz center fed dipole it's
not big but my roofside sgc at least keeps the swr's nice.

it's about 20ft off the surface of my roof wich is about 175ft off the
ground ...


i was thinking about adding a verticle antenna such as the
challanger(gap) or such...



what i ponder is what if any improvements i might see over the dipole
or if under what 'conditions' it might be better --if at all??


tnx