Perfect Portable Antenna
The PPA-20 is an “end-fed Zepp” antenna shipped preadjusted for operation on 14.1 MHz. It should exhibit a VSWR better than 2:1 across the entire 20 meter Amateur band.
An end-fed Zepp is similar to a dipole in that its length is one-half wavelength at its intended operating frequency, so it does not require a ground system or radials like a ¼-wave monopole requires. The PPA-20 does require a counterpoise wire, approximately 3 feet in length, which can hang free and does not need to be connected to ground.
The radiating element is a flexible AWG-24 wire, approximately 33 feet in length. Do not alter the length of the radiating element or the counterpoise, or the antenna may not perform as desired.
The PPA-20 is rated at 2 Watts. Use at higher power levels is at the user’s risk, and Lazy Dog Engineering will not be responsible for any damage resulting from such use.
If you plan to use your PPA-20 in a permanent or long-term installation, you may wish to replace the radiator with one made of heavier-gauge wire.
Here are some links to previous articles describing the development of the PPA-20: The Perfect Portable HF Antenna, Part I, The Perfect Portable HF Antenna, Part II, The Perfect Portable HF Antenna, Part III, More on the Perfect Portable HF Antenna, Perfect Portable Antenna Now AvailableShare on Facebook