[TenTec] Eagle Tuner

[Stuart Rohre]

Indeed the Zepp antenna used in early ham days was the half wave end fed 
with a quarter wave of open wire line at right angles to the shack, for 
matching.  To transform the high end impedance of the dipole to a more 
reasonable value for feeding from the rig tank circuit. On a Zeppelin, 
it would hang straight down.  In modern times, it has been used on 2 
meters as the J-Pole antenna, "upside down" to the orientation on the Z 
ship, with the feed point below the J-pole.  But the antenna Physics 
work in either direction.

Extended Zepps and Double Zepps have 5/8 wavelength radiators, with the 
double Zepp being center fed with open wire line.  These make nice gain 
antennas, especially the Double Zepp.

Stuart Rohre
K5KVH