G5RV Multiband Antenna
Free Space
14.200 MHz
1 wires, feet
20  0 -51 0  0  51 0  #12
1 source
10,100,0
0 loads

Even using the recommended 34 foot open-wire matching section, the designer
states that an antenna tuner is necessary for all-band operation, and MN
confirms some pretty wild input impedances.  The radiation pattern on each band
is just what you would expect for a center-fed wire of this length: dipole-like
on the lower bands, cloverleaf-shaped on the higher ones.  All in all this
popular antenna does not seem to possess any special properties, operating like
any ordinary random length center fed wire.