A detailed written article on this antenna in a stacked version appeared in the German FUNKAMATEUR magazine from April 1997 page 448+.

50 MHz half wave vertical - DK7ZB

50MHz J-Pole Antenna for about $25 - VK4ADC
Simplified construction techniques for a J Pole.

6 METER HALO ANTENNA DESIGN KB1DIG - Something a little more advanced. Always fun to try out new bands. This halo is made with a true Gamma Section this time and is fashioned from aluminum. Most of the parts are leftovers from old car projects.

6 Meter J-Pole Antenna - W8CWE

6 METER ROTATABLE DELTA LOOP PROJECT KK5ID

6m Vertical Antenna - G3JVL

8 ele and 4 ele 50 MHz - N6CA
8 element, 41 foot boom, mounted at 87 feet. 14.0 dBi gain, homebrew design
6 element , 24 foot boom, 12.1 dBi design

Comparison of Commmercial 6m antennas

Construction Details for 50MHz-Yagis in DK7ZB-Design