The two different parts are for building an ez-lindenblad 2 meters leo sat antenna

The DCA is two pairs of dipoles, each pair crossed to produce circular polarization alongtheir support axis. When one pair is fed 90 degrees later than the other, the DCA has anelliptically polarized pattern over the entire hemisphere above it

Construction is extremely simple, just connect one element to the center coax conductor, and the other to the shield, and spread apart by 120 degrees

The Lindenblad antenna has ideal features for receiving transmissions from moving satellites during very low passes on the horizon

A traditional Lindenblad antenna uses four, dipole, driven-elements to create a circularly-polarized, omni-directional radiation pattern, his pattern is ideal for accessing satellites

While I was building it, I got the idea to add 6M J-pole by feeding the whole 70cm Lindenblad antenna, and feed the line with ¼ lambda stub made of TV twin cable

Lindenblad is the name of a type of antenna that is circularly polarized yet has an omnidirectional radiation pattern, with most of its gain at low elevation angles

The Lindenblad antenna consists of four half wave folded dipoles slanted 30 degrees to the horizon, oriented 90 degrees to each other in azimuth, spaced 0.3 wavelength apart. They are tied together by four half wave 300 ohm

A 137.5 MHz Quadri-Filar Helix antenna for weather satellite reception

The crossed dipole or turnstile antenna, it can be constructed at home

I did some minor adjustments to the design by changing element spacings and lengths